T510 with nVidia 3100M Optimus - not switching

Just received the above mentioned PC and I was trying to test out the switching capability of the Optimus technology. However, I can't seem to get it to switch. I have a game inside Steam and through the nVidia control panel I have set Steam to work with the discrete cart, but it never switches. This is evident because I've started up a game with Optimus enabled versus entering the BIOS and explicitly choosing the discrete card and it makes a world of difference.
Is there another application I could use to test out the switching capability (I read a previous message about Steam possibly not working). Or is there any way to explicitly switch the cards within the OS? I am looking for a way to verify this technology works.
-john

That would be beautiful, except that it wasn't switching automatically in certain cases. In particular, Steam was having an issue.
I made some headway though. Basically, I updated the drivers for the nVidia chip by going to this page:
http://www.nvidia.com/object/notebook_drivers.html
And having them scan my system. You have to allow them to use an ActiveX control (hint: use 32-bit IE for this). This resulted in two options, one for the 3100M and one for the Intel chip. I chose the 3100M download (version 2.67 from 3/24/2011) and installed it.
The first thing I noticed is the nVidia control panel had a lot more configured apps. Also, on the preview pane, I actually saw the spinning nVidia 3D logo whereas before it wasn't showing up in Optimus mode. I was able to see the switching happen via this utility:
http://forums.laptopvideo2go.com/topic/26992-optimus-test-tools-finally-in-users-hands/
I was a little worried downloading at first, but it seemed to work fine. Anyway, you can play around with various applications and watch the switch happen.
Unfortunately, my game through Steam still crashed out, but it got a lot further after the driver update. I've seen a lot of other people have problems with this particular game (Civ 5) using optimus, so I'll just chalk it up to the game for now. It plays fine if I explicitly set the discrete chip in the BIOS which I can live with.
My next step will be to test other games to make sure it truly is game specific. Hope this helps people having the same problem.

Similar Messages

T510 Nvidia 3100M - Can't switch between integrated and discrete?

I just received my new T510 laptop. My old T500 laptop let me switch the graphics card by right-clicking on the Power Manager, but on this new laptop there doesn't appear to be a way to switch from the Intel to Nvidia GPU without going into the BIOS. Can anyone help me figure out what is going on?

Go into BIOS, set it to Integrated only, load up a game, note the framerate. Go back to BIOS, set it to discrete only, load up the same game, and note the framerate. Go back to BIOS, set it to Optimus, and load up the same game. See if it corresponds to the integrated framerate or the discrete framerate.
The Intel GPU can run MW2 moderately well:
http://www.youtube.com/watch?v=E_uKBTcPMXA
My HD3470 can run MW2 at 960x600 with all options turned on and textures to auto.. The NVS3100M should be twice the speed and should run it fairly fluently.
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

DVI to Video Adapter with NVIDIA 8800 GT not working

Hi all. I have the new Mac Pro Octo (mar '08) with the NVIDIA GFORCE 8800 GT card. I cannot find anywhere what may be wrong. Only on the Apple Website for the adapter that the only Mac Pro it works with is the Mac Pro (with ATI X1900 XT). However, both tech support and Apple's Store staff said this would work, prior to buying it. Well, my computer does not recognize the TV monitor hooked up via S-Video. I've powered everything down, restarted, unplugged and replugged in both orders, and switched inputs on the TV and receiver both. Nothing.
Any one know if this does or does not work with this computer???
Thanks.

Never mind. Found this out via Apples own website. Thanks APPLE TECH SUPPORT and STORE STAFF for getting me to buy a useless cable!
Mac Pro Computers (January 2008)
The Mac Pro computers with Quad-Core Intel Xeon 5400 Series microprocessors were introduced in January 2008. The Mac Pro’s graphics subsystem interfaces to the North Bridge via a 16-lane PCIe 2.0 bus. For information on the PCI Express graphics support and expansion, refer to PCI Developer Note.
The following sections describe the Mac Pro’s graphics subsystem.
Graphics Cards
Supported graphics cards have dual-link DVI connectors, supporting 30-inch Apple Cinema HD Displays on both ports.
For information on video memory, power, and features refer to Table 1.
All of the supported graphics cards support dual displays in either extended desktop or video mirroring mode; for more detail, see “External Display Modes.”
Table 1 Supported Graphics Cards
Graphics card
Video SDRAM
Power usage
ATI Radeon HD 2600 XT (standard)
256 MB (GDDR3)
50 W
NVIDIA GeForce 8800GT (configure to order)
512 MB (GDDR3)
110 W
NVIDIA Quadro FX 5600 (configure to order)
1536 MB (GDDR3)
175 W
The GeForce 8800GT graphics card requires that a booster cable be connected from the PCI slot to the auxiliary power connector. The Quadro FX 5600 graphics card requires two booster cables be connected from the PCI slot to the auxiliary power connector. For additional information, refer to the PCI Developer Note.
The Mac Pro supports the 20-inch Apple Cinema Display at a resolution of 1680 x 1050, the 23-inch Apple Cinema HD Display at a resolution of 1920 x 1200, and the 30-inch Apple Cinema HD Display at a resolution of 2560 x 1600. All ports support a maximum resolution of 2048 x 1536 at 32-bit with 85 Hz refresh rate. Multiple PCI Express graphics cards can support three or more displays.
The table below lists the displays supported by port 1 and port 2.
Table 2 Port 1 and Port 2 support
Graphics card
Port 1
Port 2
Radeon HD 2600 XT
20”, 23”, 30” Apple displays
20”, 23”, 30” Apple displays, DVI to Video Adapter
GeForce 8800GT
20”, 23”, 30” Apple displays
20”, 23”, 30” Apple displays
Quadro FX 5600
20”, 23”, 30” Apple displays
20”, 23”, 30” Apple displays
For information on video ports, see “Video Monitor Ports.” For information on PCI Express expansion slots, refer to PCI Developer Note.
Video Monitor Ports
The Mac Pro has a DVI connector for an external video monitor. For a description of the DVI connector, refer to Figure 4 and Table 30.
The graphics data sent to the digital monitor use transition minimized differential signaling (TMDS). TMDS uses an encoding algorithm to convert bytes of graphics data into characters that are transition-minimized to reduce electromagnetic interference (EMI) with copper cables and DC balanced for transmission over fiber optic cables. The TMDS algorithm also provides robust clock recovery for greater skew tolerance with longer cables or low-cost short cables.
Note: The Mac Pro computer includes a DVI to VGA Adapter.
DVI to Video Adapter
The Radeon HD 2600 XT graphics card supports an optional DVI to S-video/composite adapter that provides S-video and composite output to a PAL or NTSC video monitor or VCR. When a display is connected by way of the video adapter, the computer detects the type of adapter and enables the composite and S-video outputs. The settings for the resolutions and standards (NTSC or PAL) are then selectable in the Display pane in System Preferences.
Note: The DVI to Video Adapter does not come packaged with the Mac Pro computer and must be purchased separately.
The video output connector is a 7-pin S-video connector. Figure 5 shows the arrangement of the pins and Table 31 shows the pin assignments on the composite out and S-video connector.
The Mac Pro computer provides video output at picture sizes and frame rates compatible with the NTSC and PAL standards; the picture sizes are listed in Table 32. Those picture sizes produce under-scanned displays on standard monitors.

[Solved] xorg "no screens found" on laptop with nvidia + intel Optimus

Startx gives fatal server error:(EE) no screens found
After installing arch on my laptop, I followed the xorg arch wiki to install the Xwindow system.
I installed xorg-server, startx
lspci -k | grep -A -2 -i "VGA" shows two graphic cards (see below). I guess the I am using the NVIDIA.
I installed nvidia-utils-337.12-1 , nvidia-337.12-1, nvidia-libgl-337.12-1
After that I ran nvidia-xconfig
startx gives the above error.
What can I try next?
Best,
Sjoerd
This are the log files:
lspci -k | grep -A -2 -i "VGA"
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
Subsystem: ASUSTeK Computer Inc. Device 15a7
Kernel driver in use: i915
01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT 650M] (rev a1)
Subsystem: ASUSTeK Computer Inc. GeForce GT 650M
Kernel driver in use: nvidia
lsmod
Module Size Used by
isofs 32820 0
usb_storage 49255 1
joydev 10367 0
mousedev 10912 0
uvcvideo 74492 0
videobuf2_vmalloc 3368 1 uvcvideo
videobuf2_memops 2239 1 videobuf2_vmalloc
btusb 19720 0
videobuf2_core 28999 1 uvcvideo
bluetooth 352753 2 btusb
videodev 122691 2 uvcvideo,videobuf2_core
media 12611 2 uvcvideo,videodev
6lowpan_iphc 11556 1 bluetooth
nvidia 10784100 0
arc4 2064 2
asus_nb_wmi 7400 0
coretemp 6550 0
asus_wmi 16605 1 asus_nb_wmi
intel_rapl 12332 0
sparse_keymap 3242 1 asus_wmi
hwmon 3153 2 coretemp,asus_wmi
x86_pkg_temp_thermal 7311 0
intel_powerclamp 9442 0
mxm_wmi 1595 0
kvm_intel 134316 0
iwldvm 171439 0
iTCO_wdt 5535 0
iTCO_vendor_support 1929 1 iTCO_wdt
kvm 419974 1 kvm_intel
nls_iso8859_1 4485 2
led_class 3611 2 iwldvm,asus_wmi
i915 752620 1
mac80211 510355 1 iwldvm
crct10dif_pclmul 4714 0
nls_cp437 6017 2
crc32_pclmul 2955 0
crc32c_intel 14217 0
ghash_clmulni_intel 4362 0
aesni_intel 144871 0
vfat 10631 2
aes_x86_64 7463 1 aesni_intel
fat 53688 1 vfat
lrw 3821 1 aesni_intel
gf128mul 6018 1 lrw
glue_helper 4737 1 aesni_intel
ablk_helper 2100 1 aesni_intel
cryptd 8537 3 ghash_clmulni_intel,aesni_intel,ablk_helper
iwlwifi 151777 1 iwldvm
psmouse 92904 0
snd_hda_codec_realtek 47141 1
snd_hda_codec_generic 53860 1 snd_hda_codec_realtek
microcode 17157 0
cfg80211 459335 3 iwlwifi,mac80211,iwldvm
evdev 11784 5
mac_hid 3273 0
serio_raw 5009 0
atl1c 38426 0
pcspkr 2059 0
i2c_i801 11364 0
rfkill 15971 3 cfg80211,bluetooth,asus_wmi
snd_hda_intel 38728 0
drm_kms_helper 35720 1 i915
snd_hda_codec 101816 3 snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_intel
button 4765 1 i915
snd_hwdep 6396 1 snd_hda_codec
drm 242043 3 i915,drm_kms_helper,nvidia
snd_pcm 81607 2 snd_hda_codec,snd_hda_intel
snd_timer 19038 1 snd_pcm
mei_me 9776 0
snd 60086 7 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_pcm,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
intel_gtt 12856 1 i915
i2c_algo_bit 5480 1 i915
thermal 8812 0
soundcore 5551 1 snd
tpm_tis 9310 0
i2c_core 25400 7 drm,i915,i2c_i801,drm_kms_helper,i2c_algo_bit,nvidia,videodev
video 12057 2 i915,asus_wmi
mei 65662 1 mei_me
processor 25217 0
lpc_ich 13560 0
wmi 8539 2 mxm_wmi,asus_wmi
battery 7821 0
tpm 23363 1 tpm_tis
shpchp 25706 0
intel_rst 2372 0
ac 3366 0
ext4 505317 2
crc16 1359 2 ext4,bluetooth
mbcache 6266 1 ext4
jbd2 86487 1 ext4
sd_mod 37170 8
crc_t10dif 1135 1 sd_mod
crct10dif_common 1436 2 crct10dif_pclmul,crc_t10dif
atkbd 16934 0
libps2 4507 2 atkbd,psmouse
ahci 24043 4
libahci 21708 1 ahci
libata 174012 2 ahci,libahci
ehci_pci 4152 0
xhci_hcd 147645 0
ehci_hcd 64875 1 ehci_pci
scsi_mod 137184 3 usb_storage,libata,sd_mod
usbcore 186974 6 btusb,uvcvideo,usb_storage,ehci_hcd,ehci_pci,xhci_hcd
usb_common 1712 1 usbcore
i8042 13135 1 libps2
serio 10785 9 serio_raw,atkbd,i8042,psmouse
/etc/X11/xorg.conf
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 337.12 (buildmeister@swio-display-x64-rhel04-11) Fri Apr 4 15:17:56 PDT 2014
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
/var/log/Xorg.0.log
[ 1860.296]
X.Org X Server 1.15.1
Release Date: 2014-04-13
[ 1860.302] X Protocol Version 11, Revision 0
[ 1860.304] Build Operating System: Linux 3.14.0-4-ARCH x86_64
[ 1860.306] Current Operating System: Linux zen 3.14.2-1-ARCH #1 SMP PREEMPT Sun Apr 27 11:28:44 CEST 2014 x86_64
[ 1860.306] Kernel command line: initrd=\initramfs-linux.img root=/dev/sda2
[ 1860.309] Build Date: 14 April 2014 08:39:09AM
[ 1860.311]
[ 1860.313] Current version of pixman: 0.32.4
[ 1860.316] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 1860.316] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 1860.324] (==) Log file: "/var/log/Xorg.0.log", Time: Mon May 5 12:22:24 2014
[ 1860.326] (==) Using config file: "/etc/X11/xorg.conf"
[ 1860.327] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 1860.328] (==) ServerLayout "Layout0"
[ 1860.328] (**) |-->Screen "Screen0" (0)
[ 1860.328] (**) | |-->Monitor "Monitor0"
[ 1860.328] (**) | |-->Device "Device0"
[ 1860.328] (**) |-->Input Device "Keyboard0"
[ 1860.328] (**) |-->Input Device "Mouse0"
[ 1860.328] (==) Automatically adding devices
[ 1860.328] (==) Automatically enabling devices
[ 1860.328] (==) Automatically adding GPU devices
[ 1860.328] (WW) The directory "/usr/share/fonts/OTF/" does not exist.
[ 1860.328] Entry deleted from font path.
[ 1860.328] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/100dpi/".
[ 1860.328] Entry deleted from font path.
[ 1860.328] (Run 'mkfontdir' on "/usr/share/fonts/100dpi/").
[ 1860.328] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/75dpi/".
[ 1860.328] Entry deleted from font path.
[ 1860.328] (Run 'mkfontdir' on "/usr/share/fonts/75dpi/").
[ 1860.328] (==) FontPath set to:
/usr/share/fonts/misc/,
/usr/share/fonts/TTF/,
/usr/share/fonts/Type1/
[ 1860.328] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 1860.328] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
[ 1860.328] (WW) Disabling Keyboard0
[ 1860.328] (WW) Disabling Mouse0
[ 1860.328] (II) Loader magic: 0x804c80
[ 1860.328] (II) Module ABI versions:
[ 1860.328] X.Org ANSI C Emulation: 0.4
[ 1860.328] X.Org Video Driver: 15.0
[ 1860.328] X.Org XInput driver : 20.0
[ 1860.328] X.Org Server Extension : 8.0
[ 1860.328] (II) xfree86: Adding drm device (/dev/dri/card1)
[ 1860.328] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 1860.330] (--) PCI:*(0:0:2:0) 8086:0166:1043:15a7 rev 9, Mem @ 0xf7400000/4194304, 0xd0000000/268435456, I/O @ 0x0000f000/64
[ 1860.330] (--) PCI: (0:1:0:0) 10de:0fd1:1043:15a7 rev 161, Mem @ 0xf6000000/16777216, 0xe0000000/268435456, 0xf0000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/524288
[ 1860.330] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[ 1860.332] Initializing built-in extension Generic Event Extension
[ 1860.333] Initializing built-in extension SHAPE
[ 1860.335] Initializing built-in extension MIT-SHM
[ 1860.337] Initializing built-in extension XInputExtension
[ 1860.338] Initializing built-in extension XTEST
[ 1860.340] Initializing built-in extension BIG-REQUESTS
[ 1860.342] Initializing built-in extension SYNC
[ 1860.343] Initializing built-in extension XKEYBOARD
[ 1860.345] Initializing built-in extension XC-MISC
[ 1860.346] Initializing built-in extension SECURITY
[ 1860.348] Initializing built-in extension XINERAMA
[ 1860.349] Initializing built-in extension XFIXES
[ 1860.350] Initializing built-in extension RENDER
[ 1860.352] Initializing built-in extension RANDR
[ 1860.353] Initializing built-in extension COMPOSITE
[ 1860.355] Initializing built-in extension DAMAGE
[ 1860.356] Initializing built-in extension MIT-SCREEN-SAVER
[ 1860.357] Initializing built-in extension DOUBLE-BUFFER
[ 1860.358] Initializing built-in extension RECORD
[ 1860.360] Initializing built-in extension DPMS
[ 1860.361] Initializing built-in extension Present
[ 1860.362] Initializing built-in extension DRI3
[ 1860.364] Initializing built-in extension X-Resource
[ 1860.365] Initializing built-in extension XVideo
[ 1860.366] Initializing built-in extension XVideo-MotionCompensation
[ 1860.367] Initializing built-in extension XFree86-VidModeExtension
[ 1860.368] Initializing built-in extension XFree86-DGA
[ 1860.369] Initializing built-in extension XFree86-DRI
[ 1860.370] Initializing built-in extension DRI2
[ 1860.370] (II) LoadModule: "glx"
[ 1860.371] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 1860.382] (II) Module glx: vendor="NVIDIA Corporation"
[ 1860.382] compiled for 4.0.2, module version = 1.0.0
[ 1860.382] Module class: X.Org Server Extension
[ 1860.382] (II) NVIDIA GLX Module 337.12 Fri Apr 4 14:34:00 PDT 2014
[ 1860.383] Loading extension GLX
[ 1860.383] (II) LoadModule: "nvidia"
[ 1860.383] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[ 1860.383] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 1860.383] compiled for 4.0.2, module version = 1.0.0
[ 1860.383] Module class: X.Org Video Driver
[ 1860.383] (II) NVIDIA dlloader X Driver 337.12 Fri Apr 4 14:13:45 PDT 2014
[ 1860.383] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 1860.383] (++) using VT number 2
[ 1860.384] (EE) No devices detected.
[ 1860.384] (EE)
Fatal server error:
[ 1860.384] (EE) no screens found(EE)
[ 1860.384] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 1860.384] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 1860.384] (EE)
Last edited by sjdh (2014-05-05 14:05:34)

Hi Karol,
Thank you for the suggestion. I read the wiki Nvidia#No_screens_found_on_a_laptop.2FNVIDIA_Optimus .
It says "On a laptop, if the NVIDIA driver cannot find any screens, you may have an NVIDIA Optimus setup : an Intel chipset connected to the screen and the video outputs, and a NVIDIA". This seems to be the case for my latop.
The wiki suggests three options to get around the problem:
1) NVIDIA drivers now offer Optimus support since 319.12 Beta [[3]] with kernels above and including 3.9.
2) Another solution is to install the Intel driver to handle the screens
3) Enter the BIOS and changed the default graphics setting from 'Optimus' to 'Discrete' and the install NVIDIA drivers
I tried them all:
1) I had NVIDIA driver version 337 installed, but I don't know how to turn on Optimus support
3) I check my bios settings, but there is no such option
2) I removed the nvidia drivers and then installed intel drivers. I removed /etc/x11/xorg.conf
startx now find screens. I guess there is no 2d or 3d acceleration, but it works
Thank you
Sjoerd

Display problems with lenovo T410 with Nvidia NVS 3100M

Hi,
I am having terrible video display quality in my new T410 with Nvidia 3100M graphics card. While playing SD and HD videos, I get very poor display quality, shadows and broken pixels . I have taken these screen shots to show the issue. I have tried playing HD videos from players and online streaming from Vimeo, but all seem to have same issue.
http://i.imgur.com/bCh95.jpg http://i.imgur.com/IUONm.jpg
Nvidia Control Panel http://i.imgur.com/D04wc.png
I can confirm that the quality of the videos is not flawed as I have played same videos on other non HD displays and they look much better. I also have up to date drivers for nvidia. I hope someone can help me improve the display quality of my laptop as it is a major inconvenience. The problem is mostly with video only as images are displayed much better.
Thanks!

What are you using to play the videos?
Edit: Didn't read propely: "I have tried playing HD videos from players and online streaming from Vimeo, but all seem to have same issue."
Have you tried VLC? Unlike alot of other players it takes care of the decoding itself. Other players might all use the same decoder.

KDE systemsettings causing freeze on x86_64 with nvidia

not sure where to post this, but i have been having a difficult time tracking down this problem.
it only happens when i have effects enabled.
when i try to access system settings it hangs the GUI. i can eventually get over to the command line and "killall systemsettings" and return to the GUI.
i have been runing the 180.08 / 180.06 drivers.
i rolled back to the 177.80 drivers and the problem is different, but similar:
when i have effects enabled and try to access system settings the window shows nothing until i disable effects. then i can see all the icons (appearance, desktop, etc...)
I did NOT have this problem before i recently reformatted my system in favor of the 64 bit version of Arch.
any help in tracing this gremlin would be appreciated!

I just installed it to check here and have no problems running it. x64_86, Nvidia graphics card with nvidia driver, KDE (not mod). Compositing enabled. Didn't have a .celestiarc before. I know it's not a whole lot of help, but it might help to narrow down things a little. perhaps it points towards the graphics driver or mesa?

Slim won't work with nvidia

Hi!
I've read somewhere how to use slim with nvidia but forgot where.
Is there anybody that use slim with nvidia (binary driver, not nv)?

mpie wrote:how are you starting slim?
from rc.conf
mpie wrote:are you restarting slim after installing changing to nvidia?
/etc/rc.d/slim stop
nano /etc/X11/xorg.conf
/etc/rc.d/slim start
Reboot does not helps too.

Xorg not working with NVidia card on laptop.

Hi, I'm new here, but have been using other distros for a while now.
My problem is that whenever i try to use the discrete graphics Xorg freezes and the logs say something about not having a valid display for the card.
The Intel graphics work fine for most things, but for example Steam doesn't launch because of a missing GLX plugin or something.
GDM and Gnome also just give me a "something went wrong" instead of letting me log in or use the desktop (lxdm + kde works fine).
My configs:
10-monitor.conf
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
EndSection
Section "Monitor"
Identifier "Monitor0"
EndSection
Section "Screen"
Identifier "Screen0"
Monitor "Monitor0"
Device "Device0"
EndSection
20-intel.conf
Section "Device"
Identifier "Device1"
Driver "modesetting"
Option "AccelMethod" "none"
EndSection
20-nvidia.conf
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVidia Corporation"
Option "NoLogo" "false"
Option "AllowEmptyInitialConfiguration"
BusID "PCI:4:0:0"
EndSection
/var/log/Xorg.0.log
[ 13.417]
X.Org X Server 1.17.1
Release Date: 2015-02-10
[ 13.417] X Protocol Version 11, Revision 0
[ 13.417] Build Operating System: Linux 3.18.6-1-ARCH x86_64
[ 13.417] Current Operating System: Linux Hawaii-Arch 3.18.6-1-ARCH #1 SMP PREEMPT Sat Feb 7 08:44:05 CET 2015 x86_64
[ 13.417] Kernel command line: BOOT_IMAGE=/vmlinuz-linux root=UUID=1c7d6663-e037-4ff8-ae85-e51f6745bb45 rw quiet
[ 13.417] Build Date: 22 February 2015 12:50:32PM
[ 13.417]
[ 13.417] Current version of pixman: 0.32.6
[ 13.417] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 13.417] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 13.417] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Mar 13 18:27:43 2015
[ 13.496] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 13.496] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 13.581] (==) ServerLayout "Layout0"
[ 13.581] (**) |-->Screen "Screen0" (0)
[ 13.581] (**) | |-->Monitor "Monitor0"
[ 13.581] (**) | |-->Device "Device0"
[ 13.581] (==) Automatically adding devices
[ 13.581] (==) Automatically enabling devices
[ 13.581] (==) Automatically adding GPU devices
[ 13.602] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/OTF/".
[ 13.602] Entry deleted from font path.
[ 13.602] (Run 'mkfontdir' on "/usr/share/fonts/OTF/").
[ 13.602] (WW) The directory "/usr/share/fonts/Type1/" does not exist.
[ 13.602] Entry deleted from font path.
[ 13.638] (==) FontPath set to:
/usr/share/fonts/misc/,
/usr/share/fonts/TTF/,
/usr/share/fonts/100dpi/,
/usr/share/fonts/75dpi/
[ 13.638] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 13.638] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 13.638] (II) Loader magic: 0x815d80
[ 13.638] (II) Module ABI versions:
[ 13.638] X.Org ANSI C Emulation: 0.4
[ 13.638] X.Org Video Driver: 19.0
[ 13.638] X.Org XInput driver : 21.0
[ 13.638] X.Org Server Extension : 9.0
[ 13.639] (EE) systemd-logind: failed to get session: PID 283 does not belong to any known session
[ 13.639] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 13.639] (II) xfree86: Adding drm device (/dev/dri/card1)
[ 13.640] (--) PCI:*(0:0:2:0) 8086:0a16:1043:131d rev 9, Mem @ 0xf7400000/4194304, 0xd0000000/268435456, I/O @ 0x0000f000/64
[ 13.640] (--) PCI: (0:4:0:0) 10de:1292:1043:131d rev 161, Mem @ 0xf6000000/16777216, 0xe0000000/268435456, 0xf0000000/33554432, I/O @ 0x0000d000/128, BIOS @ 0x????????/524288
[ 13.640] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[ 13.641] (II) LoadModule: "glx"
[ 13.668] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 14.479] (II) Module glx: vendor="NVIDIA Corporation"
[ 14.479] compiled for 4.0.2, module version = 1.0.0
[ 14.479] Module class: X.Org Server Extension
[ 14.487] (II) NVIDIA GLX Module 346.35 Sat Jan 10 20:53:39 PST 2015
[ 14.491] (II) LoadModule: "nvidia"
[ 14.492] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[ 14.588] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 14.588] compiled for 4.0.2, module version = 1.0.0
[ 14.588] Module class: X.Org Video Driver
[ 14.593] (II) NVIDIA dlloader X Driver 346.35 Sat Jan 10 20:32:18 PST 2015
[ 14.593] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 14.594] (++) using VT number 1
[ 14.595] (II) Loading sub module "fb"
[ 14.595] (II) LoadModule: "fb"
[ 14.595] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 14.611] (II) Module fb: vendor="X.Org Foundation"
[ 14.611] compiled for 1.17.1, module version = 1.0.0
[ 14.611] ABI class: X.Org ANSI C Emulation, version 0.4
[ 14.611] (II) Loading sub module "wfb"
[ 14.611] (II) LoadModule: "wfb"
[ 14.612] (II) Loading /usr/lib/xorg/modules/libwfb.so
[ 14.614] (II) Module wfb: vendor="X.Org Foundation"
[ 14.614] compiled for 1.17.1, module version = 1.0.0
[ 14.614] ABI class: X.Org ANSI C Emulation, version 0.4
[ 14.614] (II) Loading sub module "ramdac"
[ 14.614] (II) LoadModule: "ramdac"
[ 14.614] (II) Module "ramdac" already built-in
[ 14.616] (II) NVIDIA(0): Creating default Display subsection in Screen section
"Screen0" for depth/fbbpp 24/32
[ 14.616] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[ 14.616] (==) NVIDIA(0): RGB weight 888
[ 14.616] (==) NVIDIA(0): Default visual is TrueColor
[ 14.616] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[ 14.617] (**) NVIDIA(0): Option "NoLogo" "false"
[ 14.617] (**) NVIDIA(0): Option "AllowEmptyInitialConfiguration"
[ 14.617] (**) NVIDIA(0): Enabling 2D acceleration
[ 19.094] (II) NVIDIA(GPU-0): Found DRM driver nvidia-drm (20130102)
[ 19.096] (II) NVIDIA(0): NVIDIA GPU GeForce GT 740M (GK208) at PCI:4:0:0 (GPU-0)
[ 19.096] (--) NVIDIA(0): Memory: 2097152 kBytes
[ 19.096] (--) NVIDIA(0): VideoBIOS: 80.28.2a.00.3d
[ 19.096] (II) NVIDIA(0): Detected PCI Express Link width: 8X
[ 19.096] (--) NVIDIA(0): Valid display device(s) on GeForce GT 740M at PCI:4:0:0
[ 19.096] (--) NVIDIA(0): none
[ 19.096] (II) NVIDIA(0): Validated MetaModes:
[ 19.096] (II) NVIDIA(0): "NULL"
[ 19.096] (II) NVIDIA(0): Virtual screen size determined to be 640 x 480
[ 19.096] (WW) NVIDIA(0): Unable to get display device for DPI computation.
[ 19.096] (==) NVIDIA(0): DPI set to (75, 75); computed from built-in default
[ 19.096] (--) Depth 24 pixmap format is 32 bpp
[ 19.097] (II) NVIDIA: Using 3072.00 MB of virtual memory for indirect memory
[ 19.097] (II) NVIDIA: access.
[ 19.100] (II) NVIDIA(0): ACPI: failed to connect to the ACPI event daemon; the daemon
[ 19.100] (II) NVIDIA(0): may not be running or the "AcpidSocketPath" X
[ 19.100] (II) NVIDIA(0): configuration option may not be set correctly. When the
[ 19.100] (II) NVIDIA(0): ACPI event daemon is available, the NVIDIA X driver will
[ 19.100] (II) NVIDIA(0): try to use it to receive ACPI event notifications. For
[ 19.100] (II) NVIDIA(0): details, please see the "ConnectToAcpid" and
[ 19.100] (II) NVIDIA(0): "AcpidSocketPath" X configuration options in Appendix B: X
[ 19.100] (II) NVIDIA(0): Config Options in the README.
[ 19.100] (II) NVIDIA(0): Setting mode "NULL"
[ 19.150] (II) NVIDIA(0): Built-in logo is bigger than the screen.
[ 19.201] (==) NVIDIA(0): Disabling shared memory pixmaps
[ 19.201] (==) NVIDIA(0): Backing store enabled
[ 19.201] (==) NVIDIA(0): Silken mouse enabled
[ 19.202] (==) NVIDIA(0): DPMS enabled
[ 19.220] (II) Loading sub module "dri2"
[ 19.220] (II) LoadModule: "dri2"
[ 19.220] (II) Module "dri2" already built-in
[ 19.220] (II) NVIDIA(0): [DRI2] Setup complete
[ 19.220] (II) NVIDIA(0): [DRI2] VDPAU driver: nvidia
[ 19.220] (--) RandR disabled
[ 19.242] (II) Initializing extension GLX
[ 19.242] (II) Indirect GLX disabled.(II) config/udev: Adding input device Power Button (/dev/input/event9)
[ 19.774] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 19.774] (**) Power Button: Applying InputClass "libinput keyboard catchall"
[ 19.774] (II) LoadModule: "libinput"
[ 19.774] (II) Loading /usr/lib/xorg/modules/input/libinput_drv.so
[ 19.817] (II) Module libinput: vendor="X.Org Foundation"
[ 19.817] compiled for 1.17.1, module version = 0.6.0
[ 19.817] Module class: X.Org XInput Driver
[ 19.817] ABI class: X.Org XInput driver, version 21.0
[ 19.817] (II) Using input driver 'libinput' for 'Power Button'
[ 19.817] (**) Power Button: always reports core events
[ 19.817] (**) Option "Device" "/dev/input/event9"
[ 19.818] (II) input device 'Power Button', /dev/input/event9 is a keyboard
[ 19.836] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input13/event9"
[ 19.836] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[ 19.837] (II) input device 'Power Button', /dev/input/event9 is a keyboard
[ 19.837] (II) config/udev: Adding input device Video Bus (/dev/input/event11)
[ 19.837] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 19.837] (**) Video Bus: Applying InputClass "libinput keyboard catchall"
[ 19.837] (II) Using input driver 'libinput' for 'Video Bus'
[ 19.837] (**) Video Bus: always reports core events
[ 19.837] (**) Option "Device" "/dev/input/event11"
[ 19.837] (II) input device 'Video Bus', /dev/input/event11 is a keyboard
[ 19.863] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:01/input/input15/event11"
[ 19.863] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[ 19.863] (II) input device 'Video Bus', /dev/input/event11 is a keyboard
[ 19.864] (II) config/udev: Adding input device Video Bus (/dev/input/event10)
[ 19.864] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 19.864] (**) Video Bus: Applying InputClass "libinput keyboard catchall"
[ 19.864] (II) Using input driver 'libinput' for 'Video Bus'
[ 19.864] (**) Video Bus: always reports core events
[ 19.864] (**) Option "Device" "/dev/input/event10"
[ 19.864] (II) input device 'Video Bus', /dev/input/event10 is a keyboard
[ 19.890] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:05/LNXVIDEO:00/input/input14/event10"
[ 19.890] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 8)
[ 19.890] (II) input device 'Video Bus', /dev/input/event10 is a keyboard
[ 19.890] (II) config/udev: Adding input device Lid Switch (/dev/input/event7)
[ 19.890] (II) No input driver specified, ignoring this device.
[ 19.890] (II) This device may have been added with another device file.
[ 19.890] (II) config/udev: Adding input device Sleep Button (/dev/input/event8)
[ 19.890] (**) Sleep Button: Applying InputClass "evdev keyboard catchall"
[ 19.890] (**) Sleep Button: Applying InputClass "libinput keyboard catchall"
[ 19.890] (II) Using input driver 'libinput' for 'Sleep Button'
[ 19.890] (**) Sleep Button: always reports core events
[ 19.890] (**) Option "Device" "/dev/input/event8"
[ 19.891] (II) input device 'Sleep Button', /dev/input/event8 is a keyboard
[ 19.916] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input12/event8"
[ 19.916] (II) XINPUT: Adding extended input device "Sleep Button" (type: KEYBOARD, id 9)
[ 19.917] (II) input device 'Sleep Button', /dev/input/event8 is a keyboard
[ 19.917] (II) config/udev: Adding input device HDA Intel HDMI HDMI/DP,pcm=3 (/dev/input/event16)
[ 19.917] (II) No input driver specified, ignoring this device.
[ 19.917] (II) This device may have been added with another device file.
[ 19.917] (II) config/udev: Adding input device HDA Intel HDMI HDMI/DP,pcm=7 (/dev/input/event17)
[ 19.917] (II) No input driver specified, ignoring this device.
[ 19.917] (II) This device may have been added with another device file.
[ 19.917] (II) config/udev: Adding input device HDA Intel HDMI HDMI/DP,pcm=8 (/dev/input/event18)
[ 19.917] (II) No input driver specified, ignoring this device.
[ 19.917] (II) This device may have been added with another device file.
[ 19.918] (II) config/udev: Adding input device Razer Razer Kraken 7.1 (/dev/input/event4)
[ 19.918] (**) Razer Razer Kraken 7.1: Applying InputClass "evdev keyboard catchall"
[ 19.918] (**) Razer Razer Kraken 7.1: Applying InputClass "libinput keyboard catchall"
[ 19.918] (II) Using input driver 'libinput' for 'Razer Razer Kraken 7.1'
[ 19.918] (**) Razer Razer Kraken 7.1: always reports core events
[ 19.918] (**) Option "Device" "/dev/input/event4"
[ 19.918] (II) input device 'Razer Razer Kraken 7.1', /dev/input/event4 is a keyboard
[ 19.970] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1:1.3/0003:1532:0501.0004/input/input8/event4"
[ 19.970] (II) XINPUT: Adding extended input device "Razer Razer Kraken 7.1" (type: KEYBOARD, id 10)
[ 19.970] (II) input device 'Razer Razer Kraken 7.1', /dev/input/event4 is a keyboard
[ 19.970] (II) config/udev: Adding input device CM Storm Coolermaster Novatouch TKL (/dev/input/event5)
[ 19.970] (**) CM Storm Coolermaster Novatouch TKL: Applying InputClass "evdev keyboard catchall"
[ 19.970] (**) CM Storm Coolermaster Novatouch TKL: Applying InputClass "libinput keyboard catchall"
[ 19.970] (II) Using input driver 'libinput' for 'CM Storm Coolermaster Novatouch TKL'
[ 19.970] (**) CM Storm Coolermaster Novatouch TKL: always reports core events
[ 19.970] (**) Option "Device" "/dev/input/event5"
[ 19.970] (II) input device 'CM Storm Coolermaster Novatouch TKL', /dev/input/event5 is a keyboard
[ 20.010] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2:1.0/0003:2516:0026.0005/input/input9/event5"
[ 20.010] (II) XINPUT: Adding extended input device "CM Storm Coolermaster Novatouch TKL" (type: KEYBOARD, id 11)
[ 20.010] (II) input device 'CM Storm Coolermaster Novatouch TKL', /dev/input/event5 is a keyboard
[ 20.010] (II) config/udev: Adding input device CM Storm Coolermaster Novatouch TKL (/dev/input/event6)
[ 20.010] (**) CM Storm Coolermaster Novatouch TKL: Applying InputClass "evdev keyboard catchall"
[ 20.010] (**) CM Storm Coolermaster Novatouch TKL: Applying InputClass "libinput keyboard catchall"
[ 20.010] (II) Using input driver 'libinput' for 'CM Storm Coolermaster Novatouch TKL'
[ 20.010] (**) CM Storm Coolermaster Novatouch TKL: always reports core events
[ 20.010] (**) Option "Device" "/dev/input/event6"
[ 20.010] (II) input device 'CM Storm Coolermaster Novatouch TKL', /dev/input/event6 is a keyboard
[ 20.063] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2:1.1/0003:2516:0026.0006/input/input10/event6"
[ 20.063] (II) XINPUT: Adding extended input device "CM Storm Coolermaster Novatouch TKL" (type: KEYBOARD, id 12)
[ 20.063] (II) input device 'CM Storm Coolermaster Novatouch TKL', /dev/input/event6 is a keyboard
[ 20.064] (II) config/udev: Adding input device USB2.0 HD UVC WebCam (/dev/input/event13)
[ 20.064] (**) USB2.0 HD UVC WebCam: Applying InputClass "evdev keyboard catchall"
[ 20.064] (**) USB2.0 HD UVC WebCam: Applying InputClass "libinput keyboard catchall"
[ 20.064] (II) Using input driver 'libinput' for 'USB2.0 HD UVC WebCam'
[ 20.064] (**) USB2.0 HD UVC WebCam: always reports core events
[ 20.064] (**) Option "Device" "/dev/input/event13"
[ 20.064] (II) input device 'USB2.0 HD UVC WebCam', /dev/input/event13 is a keyboard
[ 20.116] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb2/2-5/2-5:1.0/input/input17/event13"
[ 20.116] (II) XINPUT: Adding extended input device "USB2.0 HD UVC WebCam" (type: KEYBOARD, id 13)
[ 20.117] (II) input device 'USB2.0 HD UVC WebCam', /dev/input/event13 is a keyboard
[ 20.117] (II) config/udev: Adding input device HDA Intel PCH Mic (/dev/input/event19)
[ 20.117] (II) No input driver specified, ignoring this device.
[ 20.117] (II) This device may have been added with another device file.
[ 20.117] (II) config/udev: Adding input device HDA Intel PCH Headphone (/dev/input/event20)
[ 20.117] (II) No input driver specified, ignoring this device.
[ 20.117] (II) This device may have been added with another device file.
[ 20.117] (II) config/udev: Adding input device Razer Razer DeathAdder 2013 (/dev/input/event1)
[ 20.117] (**) Razer Razer DeathAdder 2013: Applying InputClass "evdev pointer catchall"
[ 20.117] (**) Razer Razer DeathAdder 2013: Applying InputClass "libinput pointer catchall"
[ 20.117] (II) Using input driver 'libinput' for 'Razer Razer DeathAdder 2013'
[ 20.117] (**) Razer Razer DeathAdder 2013: always reports core events
[ 20.117] (**) Option "Device" "/dev/input/event1"
[ 20.118] (II) input device 'Razer Razer DeathAdder 2013', /dev/input/event1 is a pointer caps = relative-motion button
[ 20.170] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.3/1-1.3:1.0/0003:1532:0037.0001/input/input5/event1"
[ 20.170] (II) XINPUT: Adding extended input device "Razer Razer DeathAdder 2013" (type: MOUSE, id 14)
[ 20.170] (**) Option "AccelerationScheme" "none"
[ 20.170] (**) Razer Razer DeathAdder 2013: (accel) selected scheme none/0
[ 20.170] (**) Razer Razer DeathAdder 2013: (accel) acceleration factor: 2.000
[ 20.170] (**) Razer Razer DeathAdder 2013: (accel) acceleration threshold: 4
[ 20.170] (II) input device 'Razer Razer DeathAdder 2013', /dev/input/event1 is a pointer caps = relative-motion button
[ 20.170] (II) config/udev: Adding input device Razer Razer DeathAdder 2013 (/dev/input/mouse0)
[ 20.170] (II) No input driver specified, ignoring this device.
[ 20.170] (II) This device may have been added with another device file.
[ 20.171] (II) config/udev: Adding input device Razer Razer DeathAdder 2013 (/dev/input/event2)
[ 20.171] (**) Razer Razer DeathAdder 2013: Applying InputClass "evdev keyboard catchall"
[ 20.171] (**) Razer Razer DeathAdder 2013: Applying InputClass "libinput keyboard catchall"
[ 20.171] (II) Using input driver 'libinput' for 'Razer Razer DeathAdder 2013'
[ 20.171] (**) Razer Razer DeathAdder 2013: always reports core events
[ 20.171] (**) Option "Device" "/dev/input/event2"
[ 20.171] (II) input device 'Razer Razer DeathAdder 2013', /dev/input/event2 is a keyboard
[ 20.223] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.3/1-1.3:1.1/0003:1532:0037.0002/input/input6/event2"
[ 20.223] (II) XINPUT: Adding extended input device "Razer Razer DeathAdder 2013" (type: KEYBOARD, id 15)
[ 20.223] (II) input device 'Razer Razer DeathAdder 2013', /dev/input/event2 is a keyboard
[ 20.224] (II) config/udev: Adding input device Razer Razer DeathAdder 2013 (/dev/input/event3)
[ 20.224] (**) Razer Razer DeathAdder 2013: Applying InputClass "evdev keyboard catchall"
[ 20.224] (**) Razer Razer DeathAdder 2013: Applying InputClass "libinput keyboard catchall"
[ 20.224] (II) Using input driver 'libinput' for 'Razer Razer DeathAdder 2013'
[ 20.224] (**) Razer Razer DeathAdder 2013: always reports core events
[ 20.224] (**) Option "Device" "/dev/input/event3"
[ 20.224] (II) input device 'Razer Razer DeathAdder 2013', /dev/input/event3 is a keyboard
[ 20.276] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.3/1-1.3:1.2/0003:1532:0037.0003/input/input7/event3"
[ 20.276] (II) XINPUT: Adding extended input device "Razer Razer DeathAdder 2013" (type: KEYBOARD, id 16)
[ 20.277] (II) input device 'Razer Razer DeathAdder 2013', /dev/input/event3 is a keyboard
[ 20.277] (II) config/udev: Adding input device Asus WMI hotkeys (/dev/input/event14)
[ 20.277] (**) Asus WMI hotkeys: Applying InputClass "evdev keyboard catchall"
[ 20.277] (**) Asus WMI hotkeys: Applying InputClass "libinput keyboard catchall"
[ 20.277] (II) Using input driver 'libinput' for 'Asus WMI hotkeys'
[ 20.277] (**) Asus WMI hotkeys: always reports core events
[ 20.277] (**) Option "Device" "/dev/input/event14"
[ 20.277] (II) input device 'Asus WMI hotkeys', /dev/input/event14 is a keyboard
[ 20.330] (**) Option "config_info" "udev:/sys/devices/platform/asus-nb-wmi/input/input22/event14"
[ 20.330] (II) XINPUT: Adding extended input device "Asus WMI hotkeys" (type: KEYBOARD, id 17)
[ 20.330] (II) input device 'Asus WMI hotkeys', /dev/input/event14 is a keyboard
[ 20.330] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event0)
[ 20.330] (**) AT Translated Set 2 keyboard: Applying InputClass "evdev keyboard catchall"
[ 20.330] (**) AT Translated Set 2 keyboard: Applying InputClass "libinput keyboard catchall"
[ 20.330] (II) Using input driver 'libinput' for 'AT Translated Set 2 keyboard'
[ 20.330] (**) AT Translated Set 2 keyboard: always reports core events
[ 20.330] (**) Option "Device" "/dev/input/event0"
[ 20.330] (II) input device 'AT Translated Set 2 keyboard', /dev/input/event0 is a keyboard
[ 20.383] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input0/event0"
[ 20.383] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 18)
[ 20.383] (II) input device 'AT Translated Set 2 keyboard', /dev/input/event0 is a keyboard
[ 20.384] (II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/event15)
[ 20.384] (**) ETPS/2 Elantech Touchpad: Applying InputClass "evdev touchpad catchall"
[ 20.384] (**) ETPS/2 Elantech Touchpad: Applying InputClass "touchpad catchall"
[ 20.384] (**) ETPS/2 Elantech Touchpad: Applying InputClass "Default clickpad buttons"
[ 20.384] (**) ETPS/2 Elantech Touchpad: Applying InputClass "libinput touchpad catchall"
[ 20.384] (II) Using input driver 'libinput' for 'ETPS/2 Elantech Touchpad'
[ 20.384] (**) ETPS/2 Elantech Touchpad: always reports core events
[ 20.384] (**) Option "Device" "/dev/input/event15"
[ 20.384] (II) input device 'ETPS/2 Elantech Touchpad', /dev/input/event15 is a touchpad
[ 20.436] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio4/input/input21/event15"
[ 20.436] (II) XINPUT: Adding extended input device "ETPS/2 Elantech Touchpad" (type: TOUCHPAD, id 19)
[ 20.436] (**) Option "AccelerationScheme" "none"
[ 20.436] (**) ETPS/2 Elantech Touchpad: (accel) selected scheme none/0
[ 20.436] (**) ETPS/2 Elantech Touchpad: (accel) acceleration factor: 2.000
[ 20.436] (**) ETPS/2 Elantech Touchpad: (accel) acceleration threshold: 4
[ 20.437] (II) input device 'ETPS/2 Elantech Touchpad', /dev/input/event15 is a touchpad
[ 20.437] (II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/mouse1)
[ 20.437] (**) ETPS/2 Elantech Touchpad: Ignoring device from InputClass "touchpad ignore duplicates"
[ 20.437] (II) config/udev: Adding input device PC Speaker (/dev/input/event12)
[ 20.437] (II) No input driver specified, ignoring this device.
[ 20.437] (II) This device may have been added with another device file.

I had a similar issue but i solved it following the instructions explained here https://wiki.archlinux.org/index.php/Bu … l.2FNVIDIA.
I also reccomend you to install the bbswitch package which disables NVIDIA discrete graphics card when isn't used.

W530 Windows 8.1 Hyper-V nVidia Optimus not working

Well, I only just noticed when I tried to run a CUDA enabled application that my nVidia Optimus drivers are not working.
If I look in "Device Manager" then it only shows the Intel HD 4000 device, no sign of my nVidia card at all.
This only started happening after I enabled the Hyper-V role, and was working fine when I was using VMWare Workstation.
Setup:
Intel i7-3840QM | 32GB RAM | nVidia K2000M Optimus | 2x 512GB SSD
Windows 8.1 Pro | Hyper-V Role Enabled
Note - I don't want to force Discrete Graphics in the BIOS because I need decent battery life!

To me it seems that this will not work under Win 8 Pro.
I think that this would require the Windows OS Feature "RemoteFX", which is bundled by Microsoft only with the Server version of the OS.
If you are able to check whether it works fine with "RemoteFX", please inform me with a note here.
I had a similar issue. I opened the thread
Windows Phone 8.1 Emulator incompatible to nVidia Quadro graphic control?
I'm still waiting for a qualified response by Microsoft.
Maybe you can inform them, too, that bundling "RemoteFX" with Win Pro would be a good thing.
Greetings, pet-ro

My ipod touch will not switch on and is no longer recognised by itunes. Before this i tried to restore it as I was having some problems with it switching off and on by itself randomly.

My ipod touch will not switch on and is no longer recognized by itunes. Before this i tried to restore it as I was having some problems with it switching off and on by itself randomly.
I tried to restore it and I got error code 2009, so I closed it tried again got error code 1659, now it wont do anything and it's not recognized by my pc /itunes please help x

For the restore error messages try:
iTunes: Specific update-and-restore error messages and advanced troubleshooting

My iPhone 4s is not switching on, I connected it to itunes thru my Windows 7 laptop and it says phone needs to be restored. I clicked okay and it started the process however the progress bar with the apple logo is on the screen, progressbar do not start

My iPhone 4s is not switching on, I connected it to itunes thru my Windows 7 laptop and it says phone needs to be restored. I clicked okay and it started the process however the progress bar with the apple logo is on the screen, progress in the bar did not start yet after 5 hours. Some one please hep me.

I did put it in DFU mode but its still not working, although everytime it shows your iphone needs to be restored. Kindly help.

HT1430 my iphone 4 has suddenly ceased to work with a full battery and switch will not display slider. How can I reactivate it?

My iphone 4 has suddenly ceased to operate with a full battery and switch will not display slider. How can I reactivate it? Is the memory gone? Will T Mobile replace the memory or the phone if necessary?

Hello,
If you're in a country where there's an apple shop (unfortunately not mine), go check it and ask the employee about it: he's gonna check your Iphone on a "device"
I've got an iphone 5 and it's working very well with me but I have to admit that its battery lasts (slower) than my Ipad 2.
Still i can help with some tips that may improve your iohone's battery by an hour in addition (hopefully):
- close all apps by multitasking....
- do NOT keep the brightness to the max
Believe me you're gonna regret changing your phone to a samsung
Hope i've helped and sorry for my bad english (has english as 3rd language)

I have problem with my iphone 5 lock switch..as lock switch not working properly..and my iphone is not in warrenty.. so plz tell me what i do...

i have problem with my iphone 5 lock switch..as lock switch not working properly..and my iphone is not in warrenty.. so plz tell me what i do...

The iPhone 5 is less than a year old, so all of them should still be in warranty unless they have been jailbroken or physically damaged. If you have a hardware problem as you describe the only option is to get the phone replaced by Apple or repaired by a non-authorized shop. The Apple replacement will be free at any Apple store in the country where the phone was purchased. If Apple determines that the phone was physically damaged or jailbroken it will cost $229.

Apple iPAD 2. Needs password to unlock iPAD; however there is a permanent keyboard displayed on the screen that does not respond to touch. iPAD switches on with button but does not turn off using it at moment. Can you help please?

Apple iPAD 2. Needs password to unlock iPAD; however there is a permanent keyboard displayed on the screen that does not respond to touch. iPAD switches on with button but does not turn off using it at moment. Can you help please?

Try a reboot by holding both the power and home buttons until the apple logo appears, ignore the red slider if that appears. See if that clears the glitch.

IPhone not connecting through Bluetooth on iMac 21.5 inch with Nvidia 750 M

On my iMac 21.5 with Nvidia 750 M, both of my iPhones (iPhone 5s and iPhone 6) won't connect through bluetooth. I've tried disconnecting my wireless keyboard and mouse. The same connection error would pop-up. *By the way, you can talk in programmer's terms to me.*

An iPhone will not pair via Bluetooth to a computer (Mac or Windows) except for personal hotspot and then only if your cellular plan supports it. https://discussions.apple.com/docs/DOC-7722
If you are attempting to use Handoff/Continuity, that does involve Bluetooth but the devices are NOT paired; Bluetooth just needs to be on and the devices in range of each other. The following may help with Handoff/Continuity issues: http://support.apple.com/kb/TS5458

T510 with nVidia 3100M Optimus - not switching

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