This started affecting me on 12.10 (no emacs, no skype, no Mathematica, etc => impossible to use Ubuntu for work), had to revert to 12.04, but had hoped the issue had been fixed for 13.04. It hasn't.
Hussam's hack fixed the problem (but why does it work?), and QT programs no longer crash X. But why has this not been fixed for over a year? This is a serious bug that renders Ubuntu completely unusable for many people with NVIDIA graphics cards, and not everyone will be able to find the solution, which must be temporary anyway (commenting out the font pipe in xorg.conf is not really a solution). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/927288 Title: Xorg crash with qt4 apps using nvidia drivers Status in “nvidia-graphics-drivers” package in Ubuntu: Confirmed Bug description: These threads and other reports seem similar to the condition I'm experiencing: http://ubuntuforums.org/showthread.php?t=1864672 Launchpad bug #905877 Several Qt4 applications, for example Google Earth, Skype and some Xscreensaver modes crash the desktop. This happens with the nvidia drivers (both nvidia-current and nvidia-current-updates) and qt4. X crashes immediately taking out the desktop and going back to the Unity login screen. Skype (skype:i386 on Oneiric 64-bit) starts normally first, but crashes always when trying to open any chat window or when selecting the Options menu. Skype login works, and then it seems to run normally on the background and the desktop panel icon shows normally. I can use Skype for example via Pidgin D-Bus account, but if I try to use the Skype's own GUI it always crashes as explained. I have Dell M4600 with nVidia 2000M. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: xorg 1:7.6+7ubuntu7.1 ProcVersionSignature: Ubuntu 3.0.0-15.26-server 3.0.13 Uname: Linux 3.0.0-15-server x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 280.13 Wed Jul 27 16:53:56 PDT 2011 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu4 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz Date: Sun Feb 5 21:36:57 2012 DistUpgraded: Fresh install DistroCodename: oneiric DistroVariant: ubuntu DkmsStatus: nvidia-current, 280.13, 3.0.0-15-server, x86_64: installed nvidia-current-updates, 280.13, 3.0.0-15-server, x86_64: installed ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GraphicsCard: nVidia Corporation GF106 [Quadro 2000M] [10de:0dda] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:04a3] InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011) JockeyStatus: xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use) xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Enabled, In use) MachineType: Dell Inc. Precision M4600 ProcEnviron: LANGUAGE=en_GB:en LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-15-server root=/dev/mapper/vg_secure-hostname1_root ro SourcePackage: xorg Symptom: display Title: Xorg crash UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/18/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 08V9YG dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd10/18/2011:svnDellInc.:pnPrecisionM4600:pvr01:rvnDellInc.:rn08V9YG:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Precision M4600 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6 version.ia32-libs: ia32-libs 20090808ubuntu26 version.libdrm2: libdrm2 2.4.26-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/927288/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp