Public bug reported: Initially i'm sorry for my english but i try to write the best description I can ;)
I have a fresh installation ( fully updated) of Ubuntu 12.10 64 bit on a DELL XPS M1330 machine with Core 2 Duo t7500, 4 GB ddr2 RAM and an Geforce 8400GS graphics card. I use gnome shell 3.6 as my main desktop environment and a nouveau open- sorce graphics driver because if i use a NVIDIA closed source driver the graphics performance on GNOME 3 are terrible! I have not identified an a particular action that trigger the problem, sometimes during the normal using or sometimes when i log on the DE many graphics elements of GNOME SHELL are corrupted and the system going to unusable. For corrupted elements I intend that the elements same as the gnome's top bar, icons, apps's menu bars or full desktop are not drawed correctly. THIS PROBLEM FORCE THE SYSTEM TO GOING UNUSABLE. I tried to restart the gnome shell with the embedded command ( ALT + F2 -> r ) but rarely the problem solves. Also i tryed to restart the gdm subsystem and/or the X subsystem but i have obtained the same results as the previous method. anyway the problem is only resolved temporally and it appear again more times during the working session to finally happen that the system must be restarted. If i use a gnome classic DE without effects (3D) the system not present any types of the precedent problems but i can't use gnome shell DE! ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3 ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7 Uname: Linux 3.5.0-19-generic x86_64 ApportVersion: 2.6.1-0ubuntu9 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,workarounds,scale,expo,ezoom] CompositorRunning: None Date: Mon Dec 10 16:29:02 2012 DistUpgraded: Fresh install DistroCodename: quantal DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation G86 [GeForce 8400M GS] [10de:0427] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:0209] InstallationDate: Installed on 2012-11-19 (20 days ago) InstallationMedia: Ubuntu GNOME Remix 12.10 "Quantal Quetzal" - Release amd64(20121023) MachineType: Dell Inc. XPS M1330 MarkForUpload: True ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-19-generic root=UUID=a7591e88-887b-4c8d-96dd-c73fe9fbb103 ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-nouveau UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/26/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: A15 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: XPS M1330 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.ia32-libs: ia32-libs 20090808ubuntu36 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 9.0-0ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1 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 ** Affects: xserver-xorg-video-nouveau (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug quantal ubuntu ** Attachment added: "DMESS NOUVEAU" https://bugs.launchpad.net/bugs/1088521/+attachment/3456312/+files/nouveau_dmesg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1088521 Title: GNOME SHELL graphics corruption caused by nouveau driver when using 3D accellerated graphics function (galluim) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1088521/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs