Can you post the output of the dmesg log, right after the issue takes place? You should see some PGRAPH - TRAP_TEXTURE errors listed.
-- 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/1077563 Title: [nouveau] Screen tearing, graphical flickering with opened Dash Status in “xserver-xorg-video-nouveau” package in Ubuntu: Confirmed Bug description: I'm using Ubuntu 12.10 Quantal, on my Vostro 1400 with Nvidia GeForce 8400 GS. Since installation, I switch to Nvidia driver and it works alright, but the windows performance is choppy, especially windows animation effects. Disabling Sync to VBlank and compression make it works a bit smoother, but still unacceptable. At least there are no screen tearing and stuff. I decide to give Nouveau driver, holy god the windows compiz effects are smooth butter. - What I expect to happen: Dash open normnally and smoothly - What happened instead: screen tearing, graphical flickering unless I close Dash. The libgl1-mesa-dri-experimental package does not help. http://i.stack.imgur.com/m8Y5H.jpg http://i.stack.imgur.com/aJ8B0.png Ubuntu 12.10 Quantal xserver-xorg-video-nouveau: Installed: 1:1.0.2-0ubuntu3 Candidate: 1:1.0.2-0ubuntu3 Version table: *** 1:1.0.2-0ubuntu3 0 500 http://au.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages 100 /var/lib/dpkg/status 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 x86_64 NonfreeKernelModules: wl .tmp.unity.support.test.0: ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz Date: Sun Nov 11 12:35:50 2012 DistUpgraded: Fresh install DistroCodename: quantal DistroVariant: ubuntu DkmsStatus: bcmwl, 5.100.82.112+bdcom, 3.5.0-17-generic, x86_64: installed ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: NVIDIA Corporation G86 [GeForce 8400M GS] [10de:0427] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:0227] InstallationDate: Installed on 2012-10-19 (22 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) MachineType: Dell Inc. Vostro 1400 MarkForUpload: True ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=d6c4d7b9-b174-46a6-bfa7-842a0ef0fe89 ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-nouveau UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/10/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 0TT361 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA09:bd07/10/2008:svnDellInc.:pnVostro1400:pvr:rvnDellInc.:rn0TT361:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Vostro 1400 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.8.4+bzr3407-0ubuntu1 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 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/1077563/+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
