I believe something in LightDM have changed (no denying this is a bug) but previously at the login screen of lightdm you grab the topbar and move it you would see your desktop wallpaper behind but now you see this corruption behind. as that's the point where compiz is not even started.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/931967 Title: Corrupted graphics after the login until the unity launcher appears Status in Unity: Triaged Status in Unity Distro Priority: New Status in “lightdm” package in Ubuntu: Confirmed Status in “nvidia-graphics-drivers” package in Ubuntu: Triaged Status in “unity” package in Ubuntu: Triaged Bug description: With the latest updates im getting corrupted graphics - images after the login until the unity launcher - desktop appears and this is happening in every system restart - relogin. Im attaching a screenshot of what im getting , it looks like its a combination of corrupted images from the windows that was running while i was doing the latest updates , my last session before the problem. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+10ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-15.24-generic 3.2.5 Uname: Linux 3.2.0-15-generic 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 290.10 Wed Nov 16 17:39:29 PST 2011 GCC version: gcc version 4.6.2 (Ubuntu/Linaro 4.6.2-12ubuntu1) .tmp.unity.support.test.0: ApportVersion: 1.91-0ubuntu1 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,decor,regex,animation,snap,move,place,mousepoll,vpswitch,wall,resize,gnomecompat,workarounds,compiztoolbox,grid,imgpng,expo,fade,ezoom,scale,session,switcher,unityshell] CompositorRunning: compiz Date: Tue Feb 14 11:40:18 2012 DistUpgraded: Log time: 2011-09-27 15:36:23.910451 DistroCodename: precise DistroVariant: ubuntu GraphicsCard: NVIDIA Corporation G86 [GeForce 8600M GS] [10de:0425] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Sony Corporation Device [104d:9005] InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) JockeyStatus: xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use) xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use) MachineType: Sony Corporation VGN-FZ31Z PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-15-generic root=UUID=12e02107-7815-4276-b7ac-7bceee898897 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to precise on 2012-02-02 (11 days ago) XorgConf: Section "Device" Identifier "Default Device" Option "NoLogo" "True" EndSection dmi.bios.date: 12/21/2007 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: R2110J7 dmi.board.asset.tag: N/A dmi.board.name: VAIO dmi.board.vendor: Sony Corporation dmi.board.version: N/A dmi.chassis.asset.tag: N/A dmi.chassis.type: 10 dmi.chassis.vendor: Sony Corporation dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR2110J7:bd12/21/2007:svnSonyCorporation:pnVGN-FZ31Z:pvrC6006UGW:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A: dmi.product.name: VGN-FZ31Z dmi.product.version: C6006UGW dmi.sys.vendor: Sony Corporation version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu1 version.ia32-libs: ia32-libs 20090808ubuntu33 version.libdrm2: libdrm2 2.4.30-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0~rc2-0ubuntu5 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0~rc2-0ubuntu5 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu3 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/931967/+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