The kernel from kernel-ppa/mainline (linux-image-3.7.0-7-generic) gives this error too, so it is not just my own kernel.
Jan 4 11:49:02 koli kernel: [ 1956.519825] nouveau E[ DRM] fail ttm_validate Jan 4 11:49:02 koli kernel: [ 1956.519831] nouveau E[ DRM] validate vram_list Jan 4 11:49:02 koli kernel: [ 1956.520511] nouveau E[ DRM] validate: -12 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/1072403 Title: Unity and GnomeShell hang or crash with nouveau kernel error messages "fail ttm_validate", "validate vram_list" and "validate: -12" Status in “xserver-xorg-video-nouveau” package in Ubuntu: Confirmed Bug description: Hi, since I reinstalled my Ubuntu (previous version was 11.04) my window managers have become very unstable. I believe it is nouveau's fault as I found these lines in /var/log/kern.log: Oct 28 18:00:50 jakob-Vostro-1500 kernel: [ 1454.599145] [drm] nouveau 0000:01:00.0: fail ttm_validate Oct 28 18:00:50 jakob-Vostro-1500 kernel: [ 1454.599150] [drm] nouveau 0000:01:00.0: validate vram_list Oct 28 18:00:50 jakob-Vostro-1500 kernel: [ 1454.599204] [drm] nouveau 0000:01:00.0: validate: -12 The crashes appear to be nondeterministic: Most of the time, when I boot the system with external displays plugged into the VGA port, something crashes. In the worst cases the whole system crashes and only SysRq keys are working. At other times I'm still able to reach the terminal via ctrl-alt-f1. Even if the system survived, the window manager often later on hangs and displays false colors and sometimes recovers. The log files automatically attached by apport should document the latter error symptom. I'd be happy to supply more information if you can give me hints how to gather them. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic i686 .tmp.unity.support.test.0: ApportVersion: 2.6.1-0ubuntu6 Architecture: i386 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sun Oct 28 18:08:15 2012 DistUpgraded: Fresh install DistroCodename: quantal DistroVariant: ubuntu DkmsStatus: virtualbox, 4.1.18, 3.5.0-17-generic, i686: installed ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation G84 [GeForce 8600M GT] [10de:0407] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:0228] InstallationDate: Installed on 2012-10-05 (22 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta i386 (20120926) MachineType: Dell Inc. Vostro 1500 MarkForUpload: True ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-17-generic root=/dev/mapper/vgubuntu-linux1 ro noplymouth sysrq_always_enabled SourcePackage: xserver-xorg-video-nouveau UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/02/2007 dmi.bios.vendor: Dell Inc. dmi.bios.version: A01 dmi.board.name: 0WY040 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA01:bd08/02/2007:svnDellInc.:pnVostro1500:pvr:rvnDellInc.:rn0WY040:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Vostro 1500 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.8.4-0ubuntu3 version.libdrm2: libdrm2 2.4.39-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1072403/+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
