Disconnecting external screen not always withoud problemns

I noticed that when I unplug my external screen sometimes I keep an error.
Like: http://www.flickr.com/photos/24039811@N04/2284699742/ (leaving a 1x1 display).
Could this be a bug, or is there a way to 'detach' a display before I disconnect it?

I have this issue frequently on MacOS 10.8.5. My Macbook Pro Retina seems to partially think there's still an external monitor connected.
Just today I figured out a workaround that fixes my machine without a reboot:
1. Load the Displays preferences. Since my menu bar is missing, Since I don't have a menu bar visible, Option-F2 (brightness) will bring this up.
2. I see two separate windows for display settings: the normal "Color LCD" window for my internal Macbook display, and another window for the phantom external display. I usually have to use the "Gather Windows" button to put them both on the same screen.
3. In the displays preferences for the phantom external display, change the Rotation setting from Standard to another setting, like 90 degrees.
That change was enough to cause the Macbook to reset the displays and realize the external display wasn't there. The second Displays window disappears, and my dock and menu bars are back on my built-in display!
I've only tried this once so far, so hopefully it holds up on future occasions. But, this has been such a persistenly annoying problem for me that I wanted to post this in case it can help anyone else!

Similar Messages

I need to connect my Imac 27'' (newest version) up to 3/4 monitors (all 40'' LCD tv's with VGA and HDMI connections) with extended display to all external screens, not duplicate images. Is this possible?

i need to connect my Imac 27'' (newest version) up to 3/4 monitors (all 40'' LCD tv's with VGA and HDMI connections) with extended display to all external screens, not duplicate images. Is this possible?

I would suggest you visit an Apple dealer, preferably an Apple Store if there's one in your city, and ask for assistance in determining what you need. The questions and issues you bring up are rather complex to address in a technical support forum and would be better addressed in person where you and the salesperson can ask questions back and forth to arrive at the optimal setup.
Regards.

Cursor disappears when disconnecting external screen

Hi all, just in case the subject line didn't say it all, we have recently been experiencing a loss of our cursor after we disconnect an external screen. It seems to happen with both the DVI and VGA adaptors. I am turning off the external screen before disconnecting the adaptor, however after our powerbook refreshes the cursor is invisible. It still functions fully, it's just invisible. Only a restart brings it back. We've had the powerbook for three years and as I stated before this is a recent development. Any help is greatly appreciated.
Cheers
Iain

Upgraded to Leopard

3 GS screen not always responsive

Hi. Just got the 3GS a week ago, and i've noticed that when i touch the screen, its not always responsive. Some times i have to touch it several times to get it to work.
any one have this issue?
thanks

Hi. I was having the same issue. I took my phone to the genius bar (apple store) and they tightened one of the cables inside the phone. They guy told me that apple has seen some phones that have a loose cable inside and its a quick 2 minute fix. Since I went to the apple store and they did the reconnecting, I haven't had that problem

External screen not working

I had to reload my applications on my phone last night and since then my external screen is only white and says tmobile on it. I have tried to hard reset it and have gone through all my settings. I can't figure out what it is doing or what I am supposed to do because my phone pretty much works the same way it was before with the exeption of the external screen. Anyone have any ideas?

When you said you had to reload your phone, did you have to upgrade or reload the handheld software? If so just try going through the Application Loader and run the update again.
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Remember to resolve your thread by clicking Accepted Solution.

MacBook Bootcamp Win XP External Screen Not Working

I've been sitting for hours trying to get the external screen to work in Win XP, it doesnt, is there a solution for this?

This question just sitting at the bottom of the page isn't helping me!!!
(So I posted ^this^)

Can I horizontally flip an external screen (Not rotation)

I am currently working on my master-thesis. During the developement of my prototype I came upon a litlle problem…
I would like to "flip" my external screen. Is their any kind of tweak or possibility to do this?
I'm working on a Macbook Air and i'm working with an external screen.
Any sloution is welcome!
I have tried to download the program "Display Rotation Menu" but you can only rotate (90°, 180°, 270°) the external screen and I would like to flip it…
Thank in advance!
Pieter De Wachter
-Belgium-

Thanks for the reply David Won1,
The only problem is, that I would like to flip my screen.
For example: If I can flip my screen it wouldn't be possible to read my text on my screen, because it's written in mirrorwriting. This means that the text that I am reading is written in reverse.
And for my master thesis I would like to have my screen in a "reverse" position, like the previous example.
Is there no tweak, program or solution that can help me?
Again, thanks for all the help.
Pieter

Screen not always responding right when plugged in?

I notice occasionally my screen just goes crazy. I'll be touching in the middle and it ends up actually touching done (no where Near where anything was touching). At first I thought it was the Body Glove case I have, so I removed it.
This doesn't always happen either, which is strange. After using the phone for a while though, I've noticed it only has happened while plugged in (Just to the wall, I don't plug it into the computer because I'm at work). As soon as I unplugged it, I could enter the text I needed and it was fine.
Is this happening to anyone else? I'm trying to find out if it's a real issue, or if I maybe just have a defective phone.

This happened to me one day...but I had it plugged into the work computer to charge...as soon as I held my finger in it (like in imovie) the screen would start jittering...but as soon as I disconnected it, it would work fine. This is only at work (PC) but not at home (macbook pro). Not sure why that is though.

Satellite L670-1JP external HDD not always recognized on start-up

I bought a Samsung G3 external HD. The first time i plugged it in, it was directly recognized by my Toshiba Satellite L670-1JP and worked with no problems.
But later, almost everytime I start up my computer, he does not find the external HD. I then have to unplug en replug the USB connection several times to make it work.
This is rather time consuming, so how can I solve this problem ?

Hi
Do other USB devices work properly in connection with the Satellite L notebook?
Did you test this external HDD with other computers/notebooks?
I think you should do this because it could be a external HDD malfunction.
Check this!

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

IMAC and external screen--screen flickering and erratic mouse behavior

I have purchased a screen Medion 25.5 inch to connect it to my IMAC 27 inch.
I have noticed two unexpected behaviours:
- from time to time, after the IMAC comes out of the SLEEP mode, the external screen is flickering, I need to put the IMAC to sleep one or several times before the display of the external screen becomes stable.
- since I connected the external screen, the behavior of the mouse is highly erratic, eg when I move the mouse by a fraction of a millimeter, the display of the mouse pointer moves by half a screen, or even disappears completely. I have performed many tests, with several apple mice, a Dell mouse and a Microsoft mouse. As soon as I completely disconnect the screen (not only power the screen down) the mouse works normally again. I have now decided to stop using the external screen until a software update resolves the situation.
Any advice?
Patrick

When my 2008 24" iMac started to die from overheating, two of the symptoms I would see would be white flickering from the bottom going about half way up, like it was going blank and repainting the screen over and over. Also, the mouse pointer would jump erratically to all the edges and corners of the screen. After a few seconds, it might recover or it might freeze. I would use a program like iStat Pro to see what your temps are when you attach that screen. I suspect it may be excess heat due to the GPU now pushing two screens instead of 1?
Also try diags, and all those reset thingies people keep mentioning over and over.
First and foremost, if you have coverage, contact a "genius" and let him belittle you with his expertise.

T60 2 external screens + internal LCD screen

Hi, I have a T60 with the Advanced mini dock and 2 Lenovo ThinkVision external LCD screens. Can I make both external screens and the internal screen work with this setup?
I understand the mini dock can only drive to 2 external screens not the internal also.
Can I connect 1 external screen VGA to the mini dock and then connect both external screens DVI together via the DVI connector on the external displays?

i don't think you can drive three screens at the same time with this set up.

Best way to disconnect from external screen?

This problem has been on-going, but I am only now asking for help. It has recurred over now 3 reinstallations of 10.5.
I have an external (Dell) screen, and I run my MBP (Core Duo 2GHz) with the internal screen closed. I have not been able to figure out how to detach the computer from the screen and have it reliably sleep. Instead of sleeping, the MBP goes into some sort of dark-screen state, in which I have to first kill it (holding down the power button for 10 secs.) and then reboot it.
There are the following connections: sound out, USB out, video out, and power.
For a while I tried the following: sleep the MBP (from the Apple Menu), unplug each of the wires. Often when I do this, the MBP will wake up when the USB is disconnected, but since the lid is closed, it doesn't really wake up. When I then open the screen, the screen does not light up, and I have to kill and reboot the machine.
Later I have been trying: unplug the external screen, then unplug the other wires. This seemed to work until today, when I found the same problems.
I have this feeling that the machine isn't really crashed, but that somehow it is losing touch with its built in screen, since I find that I have to first kill the machine (pushing power button for 10 secs), and then reboot it. But since the built-in screen is dark, I don't know what else to do.
Obviously, I could always shut down when unplugging the external screen, but I would rather not do this.
Thoughts?
A

I'm unable to recreate the problem on my CD MBP running 10.4.11. It's unclear if you are still unplugging peripherals after you sleep the MBP, but the bottom line is that you shouldn't do that - unplug the USB and the external monitor (audio out/headphone port doesn't matter) +and then+ put the MBP to sleep. Also, note that you should not move the MBP until it is really asleep. Look at the light on the latch - when you select sleep, the light remains solid for a while, then starts pulsating. During the solid light period, the MBP is writing the contents of RAM to the HDD (Safe Sleep); if you move it during this process, you may trigger the sudden motion sensor on the HDD and interrupt sleep (it may still appear to sleep, but when it "wakes" it does so as you describe, with a black screen. (Note that this is the main cause of the "+I put my MBP in the bag and when I took it out it was blazing hot and the screen was dark and it wouldn't wake up, so I had to do a hard reboot+" posts.)
Hope this helps...

I want to upgrade my Hard Drive to 1TB and more. What is the maximun Hard Drive I can install for a MacBook Pro 2009 Yesterday, I tried a SEAGATE SSHD but my screen was always a showing a QUESTION MARK (?). It's not the cable because when I put back

I want to upgrade my Hard Drive to 1TB and more.
What is the maximun Hard Drive I can install for a MacBook Pro 2009
Yesterday, I tried a SEAGATE SSHD but my screen was always a showing a QUESTION MARK (?). It's not the cable because when I put back the old original version, everything works...Any sugestion of brabnding or procédure to upgrade my hard drive?

The largest 2.5" dia SATA drives available are 2 TB in capacity.
Have you tried the Seagate SSHD connected externally to the MBP via USB? The drive itself may be faulty.
Ciao.
Here is a good place to start looking for a replacement drive:
http://eshop.macsales.com/shop/hard-drives/2.5-Notebook/

I was updating my ipad 2 and got it disconnected and its not responding,giving a blank screen with apple logo. when i connect it to itunes then it is giving an error that enter your passcode but the screen is blank how can enter my passcode?

I was updating my ipad 2 and got it disconnected and its not responding,giving a blank screen with apple logo. when i connect it to itunes then it is giving an error that enter your passcode but the screen is blank how can enter my passcode?

What to Do When Your iPad Won't Turn On
http://ipad.about.com/od/iPad_Troubleshooting/ss/What-To-Do-When-Your-Ipad-Wo-No t-Turn-On.htm
iOS: Not responding or does not turn on
http://support.apple.com/kb/TS3281
iPad Frozen? How to Force Quit an App, Reset or Restart Your iPad
http://ipadacademy.com/2010/11/ipad-frozen-how-to-force-quit-an-app-reset-or-res tart-your-ipad
iPad: Basic troubleshooting
http://support.apple.com/kb/TS3274
iOS: Resolving update and restore alert messages
http://support.apple.com/kb/TS1275
iPad: Unable to update or restore
http://support.apple.com/kb/ht4097
 Cheers, Tom

Disconnecting external screen not always withoud problemns

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