graphical glitch after login (295.20 regression)

[graingert]

Just after logging in to ubuntu I am presented with this image for a short while, before loading the desktop:

http://i.imgur.com/7bfFi.png

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: nvidia-current 295.20-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-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 295.20 Mon Feb 6 21:07:30 PST 2012
 GCC version: gcc version 4.6.2 (Ubuntu/Linaro 4.6.2-14ubuntu2)
.tmp.unity.support.test.0:

ApportVersion: 1.91-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,resize,mousepoll,vpswitch,grid,regex,wall,gnomecompat,wobbly,place,imgpng,animation,fade,move,session,scale,unitymtgrabhandles,workarounds,expo,ezoom,unityshell]
CompositorRunning: None
Date: Sun Feb 19 20:13:36 2012
DistUpgraded: Log time: 2012-02-17 18:49:37.741320
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current, 295.20, 3.2.0-16-generic, x86_64: installed
 nvidia-current, 295.20, 3.2.0-17-generic, x86_64: installed
EcryptfsInUse: Yes
GraphicsCard:
 Subsystem: Micro-Star International Co., Ltd. Device [1462:7681]
 NVIDIA Corporation G80 [GeForce 8800 GTS] [10de:0193] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: XFX Pine Group Inc. Device [1682:2251]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120201.1)
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: MSI MS-7681
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-17-generic root=UUID=82e85033-bdd9-4afb-bfc6-2b090fcaa9d8 ro quiet splash vt.handoff=7
SourcePackage: nvidia-graphics-drivers
UpgradeStatus: Upgraded to precise on 2012-02-17 (2 days ago)
dmi.bios.date: 09/08/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V23.2
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z68A-GD55 (MS-7681)
dmi.board.vendor: MSI
dmi.board.version: 4.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 4.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV23.2:bd09/08/2011:svnMSI:pnMS-7681:pvr4.0:rvnMSI:rnZ68A-GD55(MS-7681):rvr4.0:cvnMSI:ct3:cvr4.0:
dmi.product.name: MS-7681
dmi.product.version: 4.0
dmi.sys.vendor: MSI
version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu4
version.ia32-libs: ia32-libs N/A
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 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Thomas Bushnell, BSG (tbushnell)]

This appears to be one of several serious regressions in 295.20-0ubuntu1. I can confirm that we see it as well.

[nuttzo33 (slucas1979)]

I am getting also glitchy screens between logging in and the desktop showing up.I also get glitches when changing between tty screens and swithing users.I am using latest 295.20 nvidia driver.I have attached a screenshot see top menu bar fuzzy but goes away after mousing over it.

[cacula (cacula)]

Same here :-(

[Alberto Milone (albertomilone)]

Subscribing Nvidia to further investigate the problem.

[Thomas Bushnell, BSG (tbushnell)]

Here is screenshots of the glitchy launcher. This happens (reliably) on a 24" Dell monitor, the system is a Dell T3500 with Quadro FX 580.

This happens when I switch from the X display to a VT and then back. The launcher and the top menu/notification bar both look glitchy. As soon as the mouse enters the launcher, Unity repaints it and the glitch goes away. Likewise, as soon as the mouse enters the menu area, it repaints and the glitch is gone. The glitchiness in the notification area persists until I click (presumably because it doesn't have any UI elements that repaint merely on mouse-over, unlike the other two).

[Thomas Bushnell, BSG (tbushnell)]

Here is a screenshot of glitchy menu behavior. Here, menus show the background shadow effect, but the actual foreground text is missing or partial, and shows up when you mouse over it.

In both cases, I believe the bug is that Unity thinks that some texture or other has particular contents, but the contents have been scrambled by the driver in the processing of the VT switch. Presumably the relevant textures just need to get marked dirty.

[Thomas Bushnell, BSG (tbushnell)]

Screenshot of glitchy menu

[graingert (tagrain)]

I think this might be a security vulnerability, because sometimes when logging in with another user already - instead of showing zebra stripes it can show content from the previous framebuffer.

This means that content from the other user shows up on the new login.

[Timo Aaltonen (tjaalton)]

the menu corruption is another bug, affects all drivers (a bug in unity?)

this one is a dupe of 931967, marking it as such.