External monitor not detected

I just got a Samsung SyncMaster 2033 SW Plus monitor and tried connecting through the DVI port of my MacBook Pro, but its not getting detected. I'm using the mini display port to DVI adapter to connect. The monitor seems to work perfectly when I connected to the VGA port of my PC, but its not even been detected on the mac. I checked system profiler and it says no external monitor connected. Please help!!

I have a similar problem with my new MBP. I have tried to connect it to my ViewSonic VP920b via the Mini DisplayPort to DVI, but get no video on the external monitor. The system profile shows it as connected, and if I turn mirroring on/off, my MBP monitor changes resolution to mirror (or not) the external, but there's no picture, just black screen.
I've tried
•closing the lid, connecting the external Mini DisplayPort, then waking without opening the lid,
•changing the energy saver preferences to each of the 2 graphics card (Graphics Card: better battery life/better performance),
•changing the external monitor resolution through all the possibilities,
•restart with the external monitor connected
•restart without the external monitor, then connect.
Current settings:
VIDIA GeForce 9400M:
Chipset Model: NVIDIA GeForce 9400M
Type: GPU
Bus: PCI
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0863
Revision ID: 0x00b1
ROM Revision: 3448
gMux Version: 1.8.8
Displays:
Color LCD:
Resolution: 1440 x 900
Pixel Depth: 32-Bit Color (ARGB8888)
Mirror: On
Mirror Status: Hardware Mirror
Online: Yes
Built-In: Yes
VP920 Series:
Resolution: 1280 x 1024 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: On
Mirror Status: Master Mirror
Online: Yes
Rotation: Supported
Since the System Profile software can contact the monitor, and since the MBP screen changes in response to connecting or disconnecting the external monitor, I believe it's safe to assume there is no problem with the DVI cable or the MiniPort Display dongle. I just have no video displayed on the external monitor
Any suggestions?

Similar Messages

External monitor not detected on Thinkpad W530 intel-virtual-output

I'm having problems with connecting my ThinkPad W530 to external monitors since a few months. I'm using NVIDIA Optimus and bumblebee/optirun since the VGA and Mini DisplayPort connectors are only wired to the NVIDIA card om this laptop. For a long time I have executed:
$ optirun true
$ intel-virtual-output
Then I have started the Screens GUI tool in Gnome to setup the placement of the external screen but now the external screen is not present in the GUI tool and xrandr gives me:
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
LVDS1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
1920x1080 60.00*+ 50.00
1400x1050 59.98
1280x1024 60.02
1280x960 60.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
If I select "Discrete mode" and select startup screen as VGA in the BIOS the BIOS and the Grub screens shows on the external monitor but the screen locks on the screen that shows that the system is booting with the linux-ck kernel. This has never worked for me in Arch Linux so that is no surprise. In Ubuntu everything everything worked fine the last time I tried.
How can I debug this? Why is the external screen not detected any more?

Thanks, I am not sure exactly how to read the logs but I cannot find anything that is obviously wrong
Below is my log with an external screen connected via Mini DisplayPort and after running:
$ optirun true
$ intel-virtual-output
a few times, no more logs seem to be added when I connect/disconnect the monitor or when I run the above two commands more times.
╰─➤ cat /var/log/Xorg.0.log 1 ↵
[ 2.616]
X.Org X Server 1.15.0
Release Date: 2013-12-27
[ 2.616] X Protocol Version 11, Revision 0
[ 2.616] Build Operating System: Linux 3.12.5-1-ARCH x86_64
[ 2.616] Current Operating System: Linux ethuil 3.13.9-1-ck #1 SMP PREEMPT Fri Apr 4 15:50:10 EDT 2014 x86_64
[ 2.616] Kernel command line: BOOT_IMAGE=/vmlinuz-linux-ck root=UUID=25086a9b-a542-4018-9f71-4f492f09be91 rw quiet rcutree.rcu_idle_gp_delay=1
[ 2.616] Build Date: 09 January 2014 08:47:24AM
[ 2.616]
[ 2.616] Current version of pixman: 0.32.4
[ 2.616] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 2.616] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 2.616] (==) Log file: "/var/log/Xorg.0.log", Time: Mon Apr 14 22:09:08 2014
[ 2.624] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 2.624] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 2.627] (==) No Layout section. Using the first Screen section.
[ 2.627] (==) No screen section available. Using defaults.
[ 2.627] (**) |-->Screen "Default Screen Section" (0)
[ 2.627] (**) | |-->Monitor "<default monitor>"
[ 2.628] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 2.628] (==) Automatically adding devices
[ 2.628] (==) Automatically enabling devices
[ 2.628] (==) Automatically adding GPU devices
[ 2.638] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/100dpi/".
[ 2.638] Entry deleted from font path.
[ 2.638] (Run 'mkfontdir' on "/usr/share/fonts/100dpi/").
[ 2.638] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/75dpi/".
[ 2.638] Entry deleted from font path.
[ 2.638] (Run 'mkfontdir' on "/usr/share/fonts/75dpi/").
[ 2.638] (==) FontPath set to:
/usr/share/fonts/misc/,
/usr/share/fonts/TTF/,
/usr/share/fonts/OTF/,
/usr/share/fonts/Type1/
[ 2.638] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 2.638] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 2.638] (II) Loader magic: 0x804c80
[ 2.638] (II) Module ABI versions:
[ 2.638] X.Org ANSI C Emulation: 0.4
[ 2.638] X.Org Video Driver: 15.0
[ 2.638] X.Org XInput driver : 20.0
[ 2.638] X.Org Server Extension : 8.0
[ 2.639] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 3.588] (--) PCI:*(0:0:2:0) 8086:0166:17aa:21f5 rev 9, Mem @ 0xf1400000/4194304, 0xe0000000/268435456, I/O @ 0x00006000/64
[ 3.588] (--) PCI: (0:1:0:0) 10de:0ffb:17aa:21f5 rev 161, Mem @ 0xf0000000/16777216, 0xc0000000/268435456, 0xd0000000/33554432, I/O @ 0x00005000/128, BIOS @ 0x????????/524288
[ 3.588] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[ 3.589] Initializing built-in extension Generic Event Extension
[ 3.589] Initializing built-in extension SHAPE
[ 3.589] Initializing built-in extension MIT-SHM
[ 3.589] Initializing built-in extension XInputExtension
[ 3.589] Initializing built-in extension XTEST
[ 3.589] Initializing built-in extension BIG-REQUESTS
[ 3.589] Initializing built-in extension SYNC
[ 3.589] Initializing built-in extension XKEYBOARD
[ 3.589] Initializing built-in extension XC-MISC
[ 3.589] Initializing built-in extension SECURITY
[ 3.589] Initializing built-in extension XINERAMA
[ 3.589] Initializing built-in extension XFIXES
[ 3.589] Initializing built-in extension RENDER
[ 3.589] Initializing built-in extension RANDR
[ 3.589] Initializing built-in extension COMPOSITE
[ 3.589] Initializing built-in extension DAMAGE
[ 3.589] Initializing built-in extension MIT-SCREEN-SAVER
[ 3.589] Initializing built-in extension DOUBLE-BUFFER
[ 3.589] Initializing built-in extension RECORD
[ 3.589] Initializing built-in extension DPMS
[ 3.589] Initializing built-in extension Present
[ 3.590] Initializing built-in extension DRI3
[ 3.590] Initializing built-in extension X-Resource
[ 3.590] Initializing built-in extension XVideo
[ 3.590] Initializing built-in extension XVideo-MotionCompensation
[ 3.590] Initializing built-in extension XFree86-VidModeExtension
[ 3.590] Initializing built-in extension XFree86-DGA
[ 3.590] Initializing built-in extension XFree86-DRI
[ 3.590] Initializing built-in extension DRI2
[ 3.590] (II) "glx" will be loaded by default.
[ 3.590] (II) LoadModule: "dri2"
[ 3.590] (II) Module "dri2" already built-in
[ 3.590] (II) LoadModule: "glamoregl"
[ 3.593] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[ 3.615] (II) Module glamoregl: vendor="X.Org Foundation"
[ 3.615] compiled for 1.15.0, module version = 0.6.0
[ 3.615] ABI class: X.Org ANSI C Emulation, version 0.4
[ 3.615] (II) LoadModule: "glx"
[ 3.617] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 3.618] (II) Module glx: vendor="X.Org Foundation"
[ 3.618] compiled for 1.15.0, module version = 1.0.0
[ 3.618] ABI class: X.Org Server Extension, version 8.0
[ 3.618] (==) AIGLX enabled
[ 3.618] Loading extension GLX
[ 3.618] (==) Matched intel as autoconfigured driver 0
[ 3.618] (==) Matched intel as autoconfigured driver 1
[ 3.618] (==) Matched modesetting as autoconfigured driver 2
[ 3.618] (==) Matched fbdev as autoconfigured driver 3
[ 3.618] (==) Matched vesa as autoconfigured driver 4
[ 3.618] (==) Assigned the driver to the xf86ConfigLayout
[ 3.618] (II) LoadModule: "intel"
[ 3.618] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[ 3.623] (II) Module intel: vendor="X.Org Foundation"
[ 3.623] compiled for 1.15.0, module version = 2.99.911
[ 3.623] Module class: X.Org Video Driver
[ 3.623] ABI class: X.Org Video Driver, version 15.0
[ 3.623] (II) LoadModule: "modesetting"
[ 3.624] (WW) Warning, couldn't open module modesetting
[ 3.624] (II) UnloadModule: "modesetting"
[ 3.624] (II) Unloading modesetting
[ 3.624] (EE) Failed to load module "modesetting" (module does not exist, 0)
[ 3.624] (II) LoadModule: "fbdev"
[ 3.624] (WW) Warning, couldn't open module fbdev
[ 3.624] (II) UnloadModule: "fbdev"
[ 3.624] (II) Unloading fbdev
[ 3.624] (EE) Failed to load module "fbdev" (module does not exist, 0)
[ 3.624] (II) LoadModule: "vesa"
[ 3.624] (WW) Warning, couldn't open module vesa
[ 3.624] (II) UnloadModule: "vesa"
[ 3.624] (II) Unloading vesa
[ 3.624] (EE) Failed to load module "vesa" (module does not exist, 0)
[ 3.624] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[ 3.624] (II) intel: Driver for Intel(R) HD Graphics: 2000-5000
[ 3.624] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100
[ 3.624] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200
[ 3.624] (++) using VT number 1
[ 3.625] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 4000
[ 3.625] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3, sse4.1, sse4.2, avx
[ 3.625] (II) intel(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 3.625] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[ 3.625] (==) intel(0): RGB weight 888
[ 3.625] (==) intel(0): Default visual is TrueColor
[ 3.625] (**) intel(0): Framebuffer tiled
[ 3.625] (**) intel(0): Pixmaps tiled
[ 3.625] (**) intel(0): "Tear free" disabled
[ 3.625] (**) intel(0): Forcing per-crtc-pixmaps? no
[ 3.625] (II) intel(0): Output LVDS1 has no monitor section
[ 3.625] (--) intel(0): Found backlight control interface acpi_video0 (type 'firmware') for output LVDS1
[ 3.625] (II) intel(0): Output VGA1 has no monitor section
[ 3.625] (II) intel(0): Output VIRTUAL1 has no monitor section
[ 3.625] (--) intel(0): Output LVDS1 using initial mode 1920x1080 on pipe 0
[ 3.625] (==) intel(0): DPI set to (96, 96)
[ 3.625] (II) Loading sub module "dri2"
[ 3.625] (II) LoadModule: "dri2"
[ 3.625] (II) Module "dri2" already built-in
[ 3.625] (==) Depth 24 pixmap format is 32 bpp
[ 3.627] (II) intel(0): SNA initialized with Ivybridge (gen7, gt2) backend
[ 3.627] (==) intel(0): Backing store enabled
[ 3.627] (==) intel(0): Silken mouse enabled
[ 3.628] (II) intel(0): HW Cursor enabled
[ 3.628] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message.
[ 3.628] (==) intel(0): DPMS enabled
[ 3.628] (II) intel(0): [DRI2] Setup complete
[ 3.628] (II) intel(0): [DRI2] DRI driver: i965
[ 3.628] (II) intel(0): [DRI2] VDPAU driver: i965
[ 3.628] (II) intel(0): direct rendering: DRI2 Enabled
[ 3.628] (==) intel(0): hotplug detection: "enabled"
[ 3.628] (--) RandR disabled
[ 3.650] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[ 3.650] (II) AIGLX: enabled GLX_ARB_create_context
[ 3.650] (II) AIGLX: enabled GLX_ARB_create_context_profile
[ 3.650] (II) AIGLX: enabled GLX_EXT_create_context_es2_profile
[ 3.650] (II) AIGLX: enabled GLX_INTEL_swap_event
[ 3.650] (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
[ 3.650] (II) AIGLX: enabled GLX_EXT_framebuffer_sRGB
[ 3.650] (II) AIGLX: enabled GLX_ARB_fbconfig_float
[ 3.650] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
[ 3.650] (II) AIGLX: Loaded and initialized i965
[ 3.650] (II) GLX: Initialized DRI2 GL provider for screen 0
[ 3.652] (II) intel(0): switch to mode [email protected] on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 3.665] (II) intel(0): Setting screen physical size to 508 x 285
[ 3.732] (II) config/udev: Adding input device Power Button (/dev/input/event3)
[ 3.732] (**) Power Button: Applying InputClass "system-keyboard"
[ 3.732] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 3.732] (II) LoadModule: "evdev"
[ 3.732] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 3.734] (II) Module evdev: vendor="X.Org Foundation"
[ 3.734] compiled for 1.15.0, module version = 2.8.2
[ 3.734] Module class: X.Org XInput Driver
[ 3.734] ABI class: X.Org XInput driver, version 20.0
[ 3.734] (II) Using input driver 'evdev' for 'Power Button'
[ 3.734] (**) Power Button: always reports core events
[ 3.734] (**) evdev: Power Button: Device: "/dev/input/event3"
[ 3.734] (--) evdev: Power Button: Vendor 0 Product 0x1
[ 3.734] (--) evdev: Power Button: Found keys
[ 3.734] (II) evdev: Power Button: Configuring as keyboard
[ 3.734] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input4/event3"
[ 3.734] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[ 3.734] (**) Option "xkb_rules" "evdev"
[ 3.734] (**) Option "xkb_model" "pc104"
[ 3.734] (**) Option "xkb_layout" "se"
[ 3.754] (II) config/udev: Adding input device Video Bus (/dev/input/event13)
[ 3.754] (**) Video Bus: Applying InputClass "system-keyboard"
[ 3.754] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 3.754] (II) Using input driver 'evdev' for 'Video Bus'
[ 3.754] (**) Video Bus: always reports core events
[ 3.754] (**) evdev: Video Bus: Device: "/dev/input/event13"
[ 3.754] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 3.754] (--) evdev: Video Bus: Found keys
[ 3.754] (II) evdev: Video Bus: Configuring as keyboard
[ 3.754] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input15/event13"
[ 3.754] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[ 3.754] (**) Option "xkb_rules" "evdev"
[ 3.754] (**) Option "xkb_model" "pc104"
[ 3.754] (**) Option "xkb_layout" "se"
[ 3.754] (II) config/udev: Adding input device Video Bus (/dev/input/event14)
[ 3.754] (**) Video Bus: Applying InputClass "system-keyboard"
[ 3.754] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 3.754] (II) Using input driver 'evdev' for 'Video Bus'
[ 3.754] (**) Video Bus: always reports core events
[ 3.754] (**) evdev: Video Bus: Device: "/dev/input/event14"
[ 3.754] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 3.754] (--) evdev: Video Bus: Found keys
[ 3.754] (II) evdev: Video Bus: Configuring as keyboard
[ 3.754] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0a/LNXVIDEO:01/input/input16/event14"
[ 3.754] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 8)
[ 3.754] (**) Option "xkb_rules" "evdev"
[ 3.754] (**) Option "xkb_model" "pc104"
[ 3.754] (**) Option "xkb_layout" "se"
[ 3.755] (II) config/udev: Adding input device Lid Switch (/dev/input/event1)
[ 3.755] (II) No input driver specified, ignoring this device.
[ 3.755] (II) This device may have been added with another device file.
[ 3.755] (II) config/udev: Adding input device Sleep Button (/dev/input/event2)
[ 3.755] (**) Sleep Button: Applying InputClass "system-keyboard"
[ 3.755] (**) Sleep Button: Applying InputClass "evdev keyboard catchall"
[ 3.755] (II) Using input driver 'evdev' for 'Sleep Button'
[ 3.755] (**) Sleep Button: always reports core events
[ 3.755] (**) evdev: Sleep Button: Device: "/dev/input/event2"
[ 3.755] (--) evdev: Sleep Button: Vendor 0 Product 0x3
[ 3.755] (--) evdev: Sleep Button: Found keys
[ 3.755] (II) evdev: Sleep Button: Configuring as keyboard
[ 3.755] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input3/event2"
[ 3.755] (II) XINPUT: Adding extended input device "Sleep Button" (type: KEYBOARD, id 9)
[ 3.755] (**) Option "xkb_rules" "evdev"
[ 3.755] (**) Option "xkb_model" "pc104"
[ 3.755] (**) Option "xkb_layout" "se"
[ 3.755] (II) config/udev: Adding drm device (/dev/dri/card0)
[ 3.755] (II) config/udev: Adding input device Integrated Camera (/dev/input/event6)
[ 3.756] (**) Integrated Camera: Applying InputClass "system-keyboard"
[ 3.756] (**) Integrated Camera: Applying InputClass "evdev keyboard catchall"
[ 3.756] (II) Using input driver 'evdev' for 'Integrated Camera'
[ 3.756] (**) Integrated Camera: always reports core events
[ 3.756] (**) evdev: Integrated Camera: Device: "/dev/input/event6"
[ 3.756] (--) evdev: Integrated Camera: Vendor 0x4f2 Product 0xb2eb
[ 3.756] (--) evdev: Integrated Camera: Found keys
[ 3.756] (II) evdev: Integrated Camera: Configuring as keyboard
[ 3.756] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6/1-1.6:1.0/input/input8/event6"
[ 3.756] (II) XINPUT: Adding extended input device "Integrated Camera" (type: KEYBOARD, id 10)
[ 3.756] (**) Option "xkb_rules" "evdev"
[ 3.756] (**) Option "xkb_model" "pc104"
[ 3.756] (**) Option "xkb_layout" "se"
[ 3.756] (II) config/udev: Adding input device HDA Digital PCBeep (/dev/input/event7)
[ 3.756] (II) No input driver specified, ignoring this device.
[ 3.756] (II) This device may have been added with another device file.
[ 3.756] (II) config/udev: Adding input device HDA Intel PCH Mic (/dev/input/event11)
[ 3.756] (II) No input driver specified, ignoring this device.
[ 3.756] (II) This device may have been added with another device file.
[ 3.756] (II) config/udev: Adding input device HDA Intel PCH Dock Mic (/dev/input/event10)
[ 3.756] (II) No input driver specified, ignoring this device.
[ 3.756] (II) This device may have been added with another device file.
[ 3.756] (II) config/udev: Adding input device HDA Intel PCH Headphone (/dev/input/event9)
[ 3.756] (II) No input driver specified, ignoring this device.
[ 3.756] (II) This device may have been added with another device file.
[ 3.757] (II) config/udev: Adding input device HDA Intel PCH Dock Headphone (/dev/input/event8)
[ 3.757] (II) No input driver specified, ignoring this device.
[ 3.757] (II) This device may have been added with another device file.
[ 3.757] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event0)
[ 3.757] (**) AT Translated Set 2 keyboard: Applying InputClass "system-keyboard"
[ 3.757] (**) AT Translated Set 2 keyboard: Applying InputClass "evdev keyboard catchall"
[ 3.757] (II) Using input driver 'evdev' for 'AT Translated Set 2 keyboard'
[ 3.757] (**) AT Translated Set 2 keyboard: always reports core events
[ 3.757] (**) evdev: AT Translated Set 2 keyboard: Device: "/dev/input/event0"
[ 3.757] (--) evdev: AT Translated Set 2 keyboard: Vendor 0x1 Product 0x1
[ 3.757] (--) evdev: AT Translated Set 2 keyboard: Found keys
[ 3.757] (II) evdev: AT Translated Set 2 keyboard: Configuring as keyboard
[ 3.757] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input0/event0"
[ 3.757] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 11)
[ 3.757] (**) Option "xkb_rules" "evdev"
[ 3.757] (**) Option "xkb_model" "pc104"
[ 3.757] (**) Option "xkb_layout" "se"
[ 3.757] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event12)
[ 3.757] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall"
[ 3.757] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall"
[ 3.757] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "Default clickpad buttons"
[ 3.757] (II) LoadModule: "synaptics"
[ 3.757] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
[ 3.758] (II) Module synaptics: vendor="X.Org Foundation"
[ 3.758] compiled for 1.15.0, module version = 1.7.4
[ 3.758] Module class: X.Org XInput Driver
[ 3.758] ABI class: X.Org XInput driver, version 20.0
[ 3.758] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics TouchPad'
[ 3.758] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 3.758] (**) Option "Device" "/dev/input/event12"
[ 3.783] (II) synaptics: SynPS/2 Synaptics TouchPad: ignoring touch events for semi-multitouch device
[ 3.783] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range 1472 - 5470 (res 60)
[ 3.783] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range 1408 - 4498 (res 85)
[ 3.783] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range 0 - 255
[ 3.783] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width range 0 - 15
[ 3.783] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left right double triple
[ 3.783] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2 Product 0x7
[ 3.783] (**) Option "TapButton1" "1"
[ 3.783] (**) Option "TapButton2" "2"
[ 3.783] (**) Option "TapButton3" "3"
[ 3.783] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 3.783] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 3.793] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input7/event12"
[ 3.793] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" (type: TOUCHPAD, id 12)
[ 3.793] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MinSpeed is now constant deceleration 2.5
[ 3.793] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MaxSpeed is now 1.75
[ 3.793] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) AccelFactor is now 0.040
[ 3.793] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1
[ 3.793] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
[ 3.793] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000
[ 3.793] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[ 3.793] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 3.793] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse0)
[ 3.793] (**) SynPS/2 Synaptics TouchPad: Ignoring device from InputClass "touchpad ignore duplicates"
[ 3.794] (II) config/udev: Adding input device PC Speaker (/dev/input/event5)
[ 3.794] (II) No input driver specified, ignoring this device.
[ 3.794] (II) This device may have been added with another device file.
[ 3.794] (II) config/udev: Adding input device ThinkPad Extra Buttons (/dev/input/event4)
[ 3.794] (**) ThinkPad Extra Buttons: Applying InputClass "system-keyboard"
[ 3.794] (**) ThinkPad Extra Buttons: Applying InputClass "evdev keyboard catchall"
[ 3.794] (II) Using input driver 'evdev' for 'ThinkPad Extra Buttons'
[ 3.794] (**) ThinkPad Extra Buttons: always reports core events
[ 3.794] (**) evdev: ThinkPad Extra Buttons: Device: "/dev/input/event4"
[ 3.794] (--) evdev: ThinkPad Extra Buttons: Vendor 0x17aa Product 0x5054
[ 3.794] (--) evdev: ThinkPad Extra Buttons: Found keys
[ 3.795] (II) evdev: ThinkPad Extra Buttons: Configuring as keyboard
[ 3.795] (**) Option "config_info" "udev:/sys/devices/platform/thinkpad_acpi/input/input5/event4"
[ 3.795] (II) XINPUT: Adding extended input device "ThinkPad Extra Buttons" (type: KEYBOARD, id 13)
[ 3.795] (**) Option "xkb_rules" "evdev"
[ 3.795] (**) Option "xkb_model" "pc104"
[ 3.795] (**) Option "xkb_layout" "se"
[ 3.799] (II) config/udev: removing device SynPS/2 Synaptics TouchPad
[ 3.824] (II) UnloadModule: "synaptics"
[ 3.824] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event12)
[ 3.824] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall"
[ 3.824] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall"
[ 3.824] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "Default clickpad buttons"
[ 3.824] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics TouchPad'
[ 3.824] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 3.824] (**) Option "Device" "/dev/input/event12"
[ 3.844] (II) synaptics: SynPS/2 Synaptics TouchPad: ignoring touch events for semi-multitouch device
[ 3.844] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range 1472 - 5470 (res 60)
[ 3.844] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range 1408 - 4498 (res 85)
[ 3.844] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range 0 - 255
[ 3.844] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width range 0 - 15
[ 3.844] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left right double triple
[ 3.844] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2 Product 0x7
[ 3.844] (**) Option "TapButton1" "1"
[ 3.844] (**) Option "TapButton2" "2"
[ 3.844] (**) Option "TapButton3" "3"
[ 3.844] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 3.844] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 3.854] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input7/event12"
[ 3.854] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" (type: TOUCHPAD, id 12)
[ 3.854] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MinSpeed is now constant deceleration 2.5
[ 3.854] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MaxSpeed is now 1.75
[ 3.854] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) AccelFactor is now 0.040
[ 3.854] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1
[ 3.854] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
[ 3.854] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000
[ 3.854] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[ 3.854] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 3.854] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse0)
[ 3.854] (**) SynPS/2 Synaptics TouchPad: Ignoring device from InputClass "touchpad ignore duplicates"
[ 3.855] removing GPU device /sys/devices/pci0000:00/0000:00:02.0/drm/card0 /dev/dri/card0
[ 3.855] xf86: remove device 0 /sys/devices/pci0000:00/0000:00:02.0/drm/card0
[ 3.855] failed to find screen to remove
[ 3.855] (II) config/udev: Adding drm device (/dev/dri/card0)
[ 3.855] removing GPU device /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1 (null)
[ 3.855] (II) config/udev: removing device Video Bus
[ 3.863] (II) evdev: Video Bus: Close
[ 3.863] (II) UnloadModule: "evdev"
[ 3.863] (II) config/udev: Adding input device Video Bus (/dev/input/event13)
[ 3.863] (**) Video Bus: Applying InputClass "system-keyboard"
[ 3.863] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 3.863] (II) Using input driver 'evdev' for 'Video Bus'
[ 3.863] (**) Video Bus: always reports core events
[ 3.863] (**) evdev: Video Bus: Device: "/dev/input/event13"
[ 3.863] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 3.863] (--) evdev: Video Bus: Found keys
[ 3.863] (II) evdev: Video Bus: Configuring as keyboard
[ 3.863] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input15/event13"
[ 3.863] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[ 3.863] (**) Option "xkb_rules" "evdev"
[ 3.863] (**) Option "xkb_model" "pc104"
[ 3.863] (**) Option "xkb_layout" "se"
[ 3.863] removing GPU device /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-VGA-1 (null)
[ 3.863] (II) config/udev: removing device Video Bus
[ 3.870] (II) evdev: Video Bus: Close
[ 3.870] (II) UnloadModule: "evdev"
[ 3.870] (II) config/udev: Adding input device Video Bus (/dev/input/event14)
[ 3.870] (**) Video Bus: Applying InputClass "system-keyboard"
[ 3.870] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 3.870] (II) Using input driver 'evdev' for 'Video Bus'
[ 3.870] (**) Video Bus: always reports core events
[ 3.870] (**) evdev: Video Bus: Device: "/dev/input/event14"
[ 3.870] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 3.870] (--) evdev: Video Bus: Found keys
[ 3.870] (II) evdev: Video Bus: Configuring as keyboard
[ 3.870] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0a/LNXVIDEO:01/input/input16/event14"
[ 3.870] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 8)
[ 3.870] (**) Option "xkb_rules" "evdev"
[ 3.870] (**) Option "xkb_model" "pc104"
[ 3.870] (**) Option "xkb_layout" "se"
[ 4.540] (II) intel(0): EDID vendor "LEN", prod id 16562
[ 4.540] (II) intel(0): Printing DDC gathered Modelines:
[ 4.540] (II) intel(0): Modeline "1920x1080"x0.0 139.00 1920 1980 2028 2050 1080 1090 1100 1130 -hsync -vsync (67.8 kHz eP)
[ 4.540] (II) intel(0): Modeline "1920x1080"x0.0 115.83 1920 1980 2028 2050 1080 1090 1100 1130 -hsync -vsync (56.5 kHz e)
[ 7.358] (II) config/udev: Adding input device TPPS/2 IBM TrackPoint (/dev/input/event15)
[ 7.358] (**) TPPS/2 IBM TrackPoint: Applying InputClass "evdev pointer catchall"
[ 7.358] (**) TPPS/2 IBM TrackPoint: Applying InputClass "Trackpoint Wheel Emulation"
[ 7.358] (II) Using input driver 'evdev' for 'TPPS/2 IBM TrackPoint'
[ 7.358] (**) TPPS/2 IBM TrackPoint: always reports core events
[ 7.358] (**) evdev: TPPS/2 IBM TrackPoint: Device: "/dev/input/event15"
[ 7.358] (--) evdev: TPPS/2 IBM TrackPoint: Vendor 0x2 Product 0xa
[ 7.358] (--) evdev: TPPS/2 IBM TrackPoint: Found 3 mouse buttons
[ 7.358] (--) evdev: TPPS/2 IBM TrackPoint: Found relative axes
[ 7.358] (--) evdev: TPPS/2 IBM TrackPoint: Found x and y relative axes
[ 7.358] (II) evdev: TPPS/2 IBM TrackPoint: Configuring as mouse
[ 7.358] (**) Option "Emulate3Buttons" "false"
[ 7.358] (**) Option "EmulateWheel" "true"
[ 7.358] (**) Option "EmulateWheelButton" "2"
[ 7.358] (**) Option "YAxisMapping" "4 5"
[ 7.358] (**) evdev: TPPS/2 IBM TrackPoint: YAxisMapping: buttons 4 and 5
[ 7.358] (**) Option "XAxisMapping" "6 7"
[ 7.358] (**) evdev: TPPS/2 IBM TrackPoint: XAxisMapping: buttons 6 and 7
[ 7.358] (**) evdev: TPPS/2 IBM TrackPoint: EmulateWheelButton: 2, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 7.358] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/serio2/input/input14/event15"
[ 7.358] (II) XINPUT: Adding extended input device "TPPS/2 IBM TrackPoint" (type: MOUSE, id 14)
[ 7.358] (II) evdev: TPPS/2 IBM TrackPoint: initialized for relative axes.
[ 7.359] (**) TPPS/2 IBM TrackPoint: (accel) keeping acceleration scheme 1
[ 7.359] (**) TPPS/2 IBM TrackPoint: (accel) acceleration profile 0
[ 7.359] (**) TPPS/2 IBM TrackPoint: (accel) acceleration factor: 2.000
[ 7.359] (**) TPPS/2 IBM TrackPoint: (accel) acceleration threshold: 4
[ 7.359] (II) config/udev: Adding input device TPPS/2 IBM TrackPoint (/dev/input/mouse1)
[ 7.359] (II) No input driver specified, ignoring this device.
[ 7.359] (II) This device may have been added with another device file.
[ 20245.335] (II) intel(0): switch to mode [email protected] on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 21030.923] (II) intel(0): switch to mode [email protected] on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 21196.939] (II) intel(0): switch to mode [email protected] on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 21209.255] (II) intel(0): switch to mode [email protected] on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 24416.533] (II) intel(0): switch to mode [email protected] on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[ 26177.657] (II) intel(0): switch to mode [email protected] on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none

External monitor not detected - Early 2015 MBA

I am the IT admin at my company here. Recently, one of the employees started having severe problems with his Mid-2012 MBA, which would only operate in Safe Mode. Because he needs his computer at all times, my initial "solution" was to give him a new MBA, then try to work on the old one. I gave him a brand new "Early 2015" MBA.
For one day, it worked without issue, but then this morning it stopped detecting the external monitor.
I have done the following:
1. Swapping hardware. I've tried this with a DVI to MDP cable, as well as an HDMI cable using an HDMI to MDP adapter and a DVI cable with a DVI to MDP adapter. I've also tries two different monitors, including a brand new one out of the box.
Note that ALL of these configurations work flawlessly with the 2012 MBA, but the 2015 one doesn't even detect that anything has been plugged in (it does not do the familiar "flash" on the laptop screen).
2. SMC Reset
3. "Detect Displays" from the Displays system preference panel.
4. Plugged another device (a hard drive) into the Thunderbolt/MDP. It works fine.
Both laptops have OS version 10.10.3
Any advice would be appreciated.

I am the IT admin at my company here. Recently, one of the employees started having severe problems with his Mid-2012 MBA, which would only operate in Safe Mode. Because he needs his computer at all times, my initial "solution" was to give him a new MBA, then try to work on the old one. I gave him a brand new "Early 2015" MBA.
For one day, it worked without issue, but then this morning it stopped detecting the external monitor.
I have done the following:
1. Swapping hardware. I've tried this with a DVI to MDP cable, as well as an HDMI cable using an HDMI to MDP adapter and a DVI cable with a DVI to MDP adapter. I've also tries two different monitors, including a brand new one out of the box.
Note that ALL of these configurations work flawlessly with the 2012 MBA, but the 2015 one doesn't even detect that anything has been plugged in (it does not do the familiar "flash" on the laptop screen).
2. SMC Reset
3. "Detect Displays" from the Displays system preference panel.
4. Plugged another device (a hard drive) into the Thunderbolt/MDP. It works fine.
Both laptops have OS version 10.10.3
Any advice would be appreciated.

T61 and the Intel Graphics Card error - external monitor not detected

T61 with Vista 32 bit, Mobile Intel® GM965 Express Chipset and an Advanced Mini Dock.
I am trying to use the DVI port and an external monitor. The driver does not detect the external monitor.
Uninstalling the Intel driver the Generic profile will work on the external monitor, but is overly fuzzy, how do I get the T61 to recognize my external monitor with the right drivers?
I am currently running the Intel Driver Ver. - 7.14.10.1329, which provides the message under Multiple Display:
Two displays must be connected to the computer before you can use this feature. Please connect another display.
Of course my 22" monitor is connected. That is the frustrating part. I have also uninstalled Presentation Director, just in case, but then re-installed after it seemed that wasn't the problem.
There is a newer driver from Intel but it is not Lenovo approved yet I guess. Though I highly doubt this is the problem. What can I do?
~~
I did post a thread on the thinkpads.com too, but so far haven't had any luck.

Well the new dock came but didn't fix the problem. Now my nice new T61 is packed up in a depot box, waiting for DHL to come pick it up.
dkaufman1 -- I guess we do have different problems. If I set my T61 to display to the DVI port in the bios I get a blank screens on both the DVI connectd monitor and the laptop screen until the OS boots when I have the laptop in the dock. The only way I can see the bios screen to set it back to the ThinkPad LCD setting is to boot it disconnected from the dock.
I really hope that this problem is resolved, as I really like the T61 otherwise. I was even using it with the VGA cable connected to my 22" monitor, but it was pretty hard to take. I'm now back to my old desktop hooked up to the same monitor via DVI and it is quite the relief, even if it isn't as zippy as the T61.

S440 External Monitor not detected after Windows 10 upgrade

Since upgrading from 8.10 to 10 my S440 no longer detects external monitor. Has anyone else encounterred this and have you found a solution?

Hi: See if performing the procedure in Resolution Step 5 at the link below resolves the problem. https://support.microsoft.com/en-us/kb/314060

External monitor not recognized (X200)

Hi,
I have an X200 with Vista
When I connect an external monitor (or projector) it is not recognized. Shift-F7 results in a message that no external monitor is detected. However, if I leave the monitor connected, put the system in standby and then resume, it recognizes the external display.
Any thoughts to how I can get it to recognize without this work-around? Thanks

I had the same problem. I think it's a vista device driver issue. Try this-
Power down your laptop. Plug in the external monitor. Boot the computer - it should default to the external monitor, and Windows should recognize it. Then, shut down normally.
Pull the monitor cable, boot your laptop regularly, reattach the cable, and give it a try.
It worked for me.

External LCD Monitor not detected

I've recently just bought a LED monitor and I've tried using the mini-display port to DVI cable and a DVI to VGA cable to connect to my macbook pro to my external LED monitor but it wasn't detected.
Anyone happen to know what the possible issue is? Is it the mini-display port or the DVI to VGA cable?

Hi texas-rangy,
If you're planning to format the laptop, the Operating System will simply roll back and it will reinstall the original Operating System which is Windows 8. Yes, you can still roll back to Windows 8 as long as the recovery partition is still accessible. This is also the last troubleshooting steps that we do to isolate if the issue if hardware or software. You may check the steps here: How to perform a System Recovery from outside of Windows. We suggest to backup all your important files within Windows and disregard the option Rescue Data on this process.
Once done formatting the unit, test your external monitor. If the monitor works then it is software issue. Proceed with the upgrade process. It is advisable to follow the steps of Upgrading the Operating System from Windows 8 to 8.1. Just follow the link. How do I upgrade from Windows 8 to Windows 8.1?
I know this is a long process but we need to consider every step and make sure that we did follow the correct procedures.
Hope these help.
Best regard,
Vincent
If my post answers your question, please mark it as "Accept as Solution"

External Monitor Not Working With Macbook Pro

My computer was working fine with an external monitor, then my computer froze, and I had to hold down the power button. When I turned it back on, my computer would not work with an external monitor. I've tried different cables, so it's not the cable. The monitor is being detected by the computer, but nothing is showen on the external monitor. When connecting the monitor to the computer, the computer's screen goes blue, then turns back to normal. I
I cannot reset the SMC by removing the battery, I do not have the confidence to remove my battery, and do not have the time to send the computer to someone else to do it.
I also tried updating my OS from 10.7.4 (Might've been 10.7.3) to 10.7.5.
My computer is a MacBook Pro (13-inch, Mid 2010), running OS X 10.7.5 Lion.
I need to get this problem fixed ASAP, any help is appreciated.
Kind Regards,
Sergee237

I forgot to mention, I'm connecting the monitor via MiniDisplay -> HDMI. I've also tried USB -> HDMI and USB -> DVI -> HDMI but none of them seem to work.

Ultra dock + three external monitors not working

Hardware:
W540 + Ultra Dock (170W)
2x 24" LCDs @ 1920X1200 (DVI only)
1x 30" LCD @ 2560x1600 (DVI only)
1x Display Port to DVI Active Converter (for the 30" LCD)
What I want to have is four displays: W540 LCD + 3 external monitors as described above. However, I can only get two of the external displays to turn on regardless of how many chickens I sacrifice. Note: I've searched extensively to see if others have had this problem, which they obviously have, but none of the solutions worked.
I think the issue is the 'advanced' mode, but I already turned it on in the BIOS. The laptop LCD works correctly (2880x1620), the 30" LCD works correctly with the display port to DVI active adapter (2560x1600), and one of the 24" LCDs works correctly (1920x1200). However, the other 24" LCD isn't available in Windows as a detected display unless I start swapping cables, which will then enable it while disabling the other 24" LCD.
For reference, the connections are as follows:
Laptop LCD (built-in)
30" LCD: DisplayPort to DVI (active); Ultra Dock DisplayPort 0
24" LCD number 1: DisplayPort to DVI cable (passive); Ultra Dock DisplayPort 1
24" LCD number 2: DVI to DVI; Ultra Dock DVI Port 0
It's my understanding that the K1100M discrete graphics card should be driving all three of the external displays, but that isn't the case right now. I see one 24" and the 30" displays in the Nvidia Control Panel and I see all three working monitors (including the laptop LCD) in botht he Nvidia Control Panel and the Windows Display area.
Things I've tried:
Uninstalled + reinstalled Nvidia Quadro drivers
Uninstalled + reinstalled Intel 4600 drivers
Enabled Advanced mode in BIOS
Restarted 5,000 times
Swapped cables until my fingers started to bleed
Updated the firmware of the Ultra Dock (it was already fully updated)
According to this page, I should be able to connect six displays including the built-in LCD. When I first looked at it, I thought I could use both Ultra Dock DisplayPort ports as well as the Ultra Dock DVI port, but it's very unclear if that's actually the case. What does it mean by DP or HDMI and DP or DVI? Does that mean I can use both DisplayPorts (which I'm currently doing and it works) only? Does it mean I can use both DisplayPorts as well as HDMI and DVI? Does it mean if I want to use HDMI and DVI that I can't use either DisplayPort? Does it mean DVI and HDMI both share an output with one of the DisplayPorts so only one of each can be used at a time? TERRIBLE DOCUMENTATION.
Any help would be greatly appreciated as this has been extremely frustrating. I have a feeing the solution is going to be a disappointment as well because it's probably going to involve buying yet another adapter and/or using the Mini-DP output on the laptop instead of, you know, actually being able to use the expensive Ultra Dock...
[rant]
I have no idea how to tell if everything is working because the graphics card situation is extremely confusing. I didn't realize when I bought the laptop that the discrete card couldn't drive the laptop's built-in LCD, which is very annoying. Or, maybe that's not true, but the documentation is so confusing that I can't be sure either way. Also, and this really pissed me off, the Ultra Dock DVI connector can't drive a dual link display. What the hell??? Why was this not clearly annotated somewhere? I really hated needing to purchase a DisplayPort to DVI active adapter to make my brand new laptop dock work as advertised. UGH.
[/rant]

I'm struggling with a very similar problem. (Thinkpad W540, K2100, Ultradock 170W)
I am using 2 external monitors right now in bios display standard mode - it's the only way they work at all for me right now. I have tried uninstalling graphics drivers, enabling advanced mode, and restarting, but none of the external displays are detected. I've also tried updating the dock's firmware, but it doesn't seem to be updating (this may have already been updated).
Current working setup:
- 2 x 22" external LCDs connected to Ultradock via DP -> DVI cables
- Laptop integrated LCD
Related but not quite as equally frustrating, the integrated LCD does not resume when waking the computer from a sleep state. Only a reboot brings the display back.
I'd like to connect another 24" display over HDMI, but don't have any confidence of it working since advanced mode is utterly worthless for me at the moment. I'm quite dissatisfied especially since I purchased an extended warranty and last time I called for support Lenovo tried to sell me an additional support plan claiming that software was not covered under my current warranty.

External Monitor not Reconized

I have a 27", mid 2011 iMac OSX 10.9.1 and a ViewSonic monitor. I purchased a Thunderbolt to VGA video adapter cable and connected the external monitor. I'm getting nothing. It's not being recognized at all.
I've tried clicking detect display, arrange monitors, I've reset the PRAM. I've even purchased a different cable and that didn't work either. Any suggestions?

Hello meattray,
The following article provides steps that can help get your display working with your iMac.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Cheers,
Allen

IMac external monitor not working after lion upgrade

Hi,
I have had an external monitor hooked up to my 09' imac for over a year now. I upgraded to Lion and ever since then it hasnt worked but one other random time when I moved and hooked everything back up. Im very tech savy, but this just doesnt make sense. Have combed google to find a solution. I have a Samsung 22in moniter and all the blue power button does is blinks at me. I am using a miniDisplay to DVI connection.
Does anyone have any suggestions other than resetting the ram?

I guess it's possible you've got some kind of hardware problem.... but not likley given it started with you installed your OS.
Here's a few things to try:
1. see if you can borrow another monitor just to be sure your monitor isn't the problem.
2. in System Prefs, and the Displays pane, click on the Detect Displays, then then the Gather Displays. If you get two diffenet display panes, that would lead me to think it's a monitor problem.
3. Lastly, disconnect your 2nd display, and restart. Then Shutdown, reconnect it, and see if that helps.
and of course..
4. make sure that all of your connections and adaptors are tight.

DVI out to external monitor not working anymore

Hi,
I have been using my MBP with an external Dell 17" LCD for a dual monitor setup. Suddenly after about 5 months of flawless working, it is not detecting the external display anymore. The display is not at fault - another powerbook detects is as ususal. I tested my MBP with another cinema display and again, it is not detecting it at all. I have tried F7 toggles and "detect display" from system preferences. No use at all.
Any ideas?
Should I just take it to the local applestore?
Thanks.

I don't know if SMC resetting fixed it or that RAM resetting fixed that issue...but now the MBP recognizes the external display all the time.
However, it has another issue now -
http://discussions.apple.com/thread.jspa?threadID=919509&messageID=4377872#43778 72

MBP i7 15" - External Monitors not working

Hi All,
Ive been using HDTVs over HDMI and Dell Monitors over DVI fine for the last 2 months, but as of a few weeks ago. I cant get any output at all on either connection!
When I plug in my Miniport adapter, the MBP screen blinks blue (as it usually did, when about to change display settings) but then nothing happens. No external monitor output at all, in any shape or form!
Similarly, when I plug the HDMI/DVI into the TV, it auto-detects that something has been plugged in and begins trying to auto-detect a signal but to no avail (mean while the macbook screen flicks to blue as described above).
I refuse to believe that my adapter is knackered, as when plugging and unplugging, both TV and MBP show signs that its trying to connect.
I've rebooted, and done the SMC reboot, and even uninstalled gfxCardStatus in case that was affecting it, but no Joy.
I have upgraded to 10.6.5 but I cant be sure when this actually occurred, and as to whether or not this caused the problem.
Any help would be lovely.
Kind Regards
Oli

I'm struggling with a very similar problem. (Thinkpad W540, K2100, Ultradock 170W)
I am using 2 external monitors right now in bios display standard mode - it's the only way they work at all for me right now. I have tried uninstalling graphics drivers, enabling advanced mode, and restarting, but none of the external displays are detected. I've also tried updating the dock's firmware, but it doesn't seem to be updating (this may have already been updated).
Current working setup:
- 2 x 22" external LCDs connected to Ultradock via DP -> DVI cables
- Laptop integrated LCD
Related but not quite as equally frustrating, the integrated LCD does not resume when waking the computer from a sleep state. Only a reboot brings the display back.
I'd like to connect another 24" display over HDMI, but don't have any confidence of it working since advanced mode is utterly worthless for me at the moment. I'm quite dissatisfied especially since I purchased an extended warranty and last time I called for support Lenovo tried to sell me an additional support plan claiming that software was not covered under my current warranty.

USB and external HDD not detected by OS X

Hello.
Since last few months, whenever I plugin a USB pen-drive or an external hard disk, it seems at first that the system has not detected the disk, since nothing shows up in the finder and there is no way to access the disk also. The disk connection is complete since the lights turn on immediately.
When I remove the disks from the port, I get a message that I should first eject it and then remove the disk, which is not possible because I CANT SEE THE DISK ANYWHERE.
Now I plugin the disk the second time and IT GETS DETECTED.
I have to do this with every external storage disk EVERY SINGLE TIME.
Someone please help me find a solution to this problem.
Thanks.
Sankalp

Hi James,
The USB hub will not function on a non-Apple branded monitor without connecting a USB cable from Type-B USB port on your monitor to one of your mac's Type A USB ports. The USB host bus should be beside your Display Port output on the monitor. Generally, a Type A to Type B USB cable will be included with your external monitor.
Hope that helps.

External HD not detected in MacBook but iBook

Hi All:
I have below systems with me >
* iBook G4 running Tiger with 1GB memory
* Previous MacBook running Tiger with 2GB memory
* New MacBook running Leopard with 4GB memory
* New iMac running Leopard with 4GB memory
I have a 100GB external HD connected to my iBook for 2 years now, via USB. And my Previous MacBook used to read and access data from the same HD too. I dunno if I have changed any setting or any software update technically forbid the access from any other Mac systems except iBook, which I bought with.
In iBook, the external HD works perfectly. I eject it, connect it to any of my MacBook now, the light on the device is turned on but nothing moves in Finder. There's no icon, unlike in iBook where a USB HD icon appears below Macintosh HD. I tried to partition and erase everything, remain Mac OS (Journaled) format, but no luck. It's properly detected and accessible by iBook but not any others.
Have I possible changed anything without knowing it ? Can someone share with me what to do next ? The external HD works well but I dun understand why none of other Mac systems recognise it, except the original iBook. Thank you.

Hi:
I am using a 100GB from Samsung. Should have mentioned earlier. It's USB-powered. I never use it with any adapter. I just plug it into iBook G4 and in less than 2 seconds time, drive pops up in Finder perfectly.
However with MacBook running either Leopard or Tiger, the light will be on and you hear it spinning. I tried to plug in adapter last night, still no luck.
I re-partitioned to GUID or Master Boot or Apple, either Mac Extended (Journaled) or MS-DOS, none of them works.
Then, last night I tried to boot-camp Windows XP and to my surprise, it was detected without any problem ! Oh...... So now I think the problem is not in USB port, not in the power adapter (which I never use), not in the format, it's in Tiger or Leopard for MacBook.
Tiger I use on iBook G4 is 10.4.11 (no problem at all)
Tiger I use on MacBook is also 10.4.11 (not detected but light is on)
Leopard I use on MacBook is 10.5.2 (not detected but light is on)
I spent so much time transfer data from external HD to iBook then to iPod then to MacBook. I just dun understand. Thank you for all your posts. ^_^

External monitor not detected

Similar Messages

Maybe you are looking for