Public bug reported:
Screen corruption occurs at start up and reboot, for
- login screen
- desktop screen
Prerequisities:
- running the nouveau driver
- running the 3.5.0-10 and -11 kernels
At non-autologin one can type the login password blindly but just to
enter a corrupted desktop screen. At autologin a corrupted desktop
screen is presented.
The CPU-load is very high and caused by millions of loggings of messages like:
[drm] nouveau 0000:02:00.0: PFIFO_CACHE_ERROR - Ch 2/2 Mthd 0x0800 Data
0x00000000
so it seems to be related to DRM and the PFIFO cache.
Workaround 1:
Use an older kernel, e.g. 3.5.0-9 in my case.
Workaround 2:
Activate Ctrl-Alt-Backspace (as Alt-SysRq-K has been disabled) and use that
shortcut to log out from the corrupted desktop screen. Then back to a normal
login screen the login works as normal both for the 3.5.0-10 and -11 kernels
and even for the 3.6.0 rc1 and rc2 kernels and normal CPU-load.
Not sure it's the libdrm-nouveau2 package but remember that one was
introduced for DRM in the time frame for this bug.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: libdrm-nouveau2 2.4.38-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-11.11-generic 3.5.2
Uname: Linux 3.5.0-11-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.4-0ubuntu8
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,vpswitch,mousepoll,wall,place,snap,move,regex,imgpng,resize,widget,gnomecompat,session,unitymtgrabhandles,animation,workarounds,fade,expo,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Mon Aug 20 18:40:48 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 4.1.18, 3.5.0-10-generic, x86_64: installed
virtualbox, 4.1.18, 3.5.0-11-generic, x86_64: installed
virtualbox, 4.1.18, 3.6.0-030600rc2-generic, x86_64: installed
virtualbox-guest, 4.1.18, 3.5.0-11-generic, x86_64: installed
EcryptfsInUse: Yes
GraphicsCard:
NVIDIA Corporation GT216 [GeForce GT 330M] [10de:0a29] (rev a2) (prog-if 00
[VGA controller])
Subsystem: Samsung Electronics Co Ltd Device [144d:c06a]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120421)
MachineType: SAMSUNG ELECTRONICS CO., LTD. R580/R590
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=sv_SE.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-11-generic
root=UUID=d290b749-dff5-4155-936a-23e3effc21a8 ro quiet splash ipv6.disable=1
Renderer: Software
SourcePackage: libdrm
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/22/2010
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 11JB.M044.20100622.hkk
dmi.board.asset.tag: Tag 12345
dmi.board.name: R580/R590
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnPhoenixTechnologiesLtd.:bvr11JB.M044.20100622.hkk:bd06/22/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR580/R590:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR580/R590:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
dmi.product.name: R580/R590
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.8+bzr3249-0ubuntu4
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.38-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.904-0ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.3-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1
** Affects: libdrm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 quantal running-unity ubuntu
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https://bugs.launchpad.net/bugs/1039125
Title:
[drm] nouveau 0000:02:00.0: PFIFO_CACHE_ERROR - Ch 2/2 Mthd 0x0800
Data 0x00000000
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