Forwarding this bug from Ubuntu reporter Peter Hedlund: http://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/898784 [Problem] The internal display is distorted with vertical bands of different colors separated by black and white noise. This worked in Ubuntu 11.10 (kernel 3.0). The the good news is that an external monitor now works perfectly through the mini displayport, which did not work in Ubuntu 11.10. DistroRelease: Ubuntu 12.04 Package: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1 Uname: Linux 3.2.0-2-generic x86_64 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,gnomecompat,grid,imgpng,mousepoll,move,place,regex,resize,session,snap,unitymtgrabhandles,vpswitch,wall,animation,expo,ezoom,fade,scale,unityshell,workarounds] CompositorRunning: compiz Date: Thu Dec 1 19:21:56 2011 GraphicsCard: nVidia Corporation Device [10de:08a3] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Apple Computer Inc. Device [106b:00d3] LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1) MachineType: Apple Inc. MacBookAir3,2 ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/hostname.seed boot=casper quiet splash -- SourcePackage: xserver-xorg-video-nouveau UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/18/10 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBA31.88Z.0061.B01.1011181342 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-942C5DF58193131B dmi.board.vendor: Apple Inc. dmi.board.version: MacBookAir3,2 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-942C5DF58193131B dmi.modalias: dmi:bvnAppleInc.:bvrMBA31.88Z.0061.B01.1011181342:bd11/18/10:svnAppleInc.:pnMacBookAir3,2:pvr1.0:rvnAppleInc.:rnMac-942C5DF58193131B:rvrMacBookAir3,2:cvnAppleInc.:ct10:cvrMac-942C5DF58193131B: dmi.product.name: MacBookAir3,2 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu7 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.27-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.10.4-1ubuntu5 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 2:2.15.901-1ubuntu3 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1
Created attachment 55885 [details] DSC03982.JPG Photo of screen showing corruption. The background is supposed to be a purple gradient (ala https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/898784/+attachment/2616711/+files/Screenshot%20at%202011-12-02%2017%3A17%3A49.png)
Created attachment 55886 [details] BootDmesg.txt
Created attachment 55887 [details] XorgLog.txt
Since this is a regression I am interested in trying to walk backwards to try to identify the problem. Is it likely that the problem is in xf86-video-nouveau or someplace else? Is cgit.freedesktop.org down or where do I browse the code? I would appreciate any hints on how to go about this.
Fixed for me in linux kernel 3.3.
Fix is backported from 3.5rc to 3.4.3 and 3.2.21
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