ubuntu-x-swat team mailing list archive

[Max Liebkies <mail@xxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

With a Mobility Radeon x1400 and KMS enabled I encounter severe display
corruptions. It seems that an application utilizing OpenGL makes this
behaviour even worse. The corruptions start about 5 minutes after boot
and create thin flickering about 1cm long horizontal lines followed by
screen flickering (like an old analogous television with a bad signal;
the picture drifts up and down). The latter screen flickering renders X
and the console unusable. The corruptions do not show up in a
screenshot.

The problem persists with Mainline Kernel 2.6.34 and/or Xorg-Edgers PPA
and/or amd64 Ubuntu version.

Possible Fixes:
1. Disabling KMS with "radeon.modeset=0" fixes the display corruptions but... well disables KMS ;-)
2. I recently found out that running "avivotool regset 0x458 0x00000000" also fixes this issue with KMS ENABLED. But that shouldn't be run by any user having a x1400, right?

If you need any further information or additional files, please let me
know.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
Architecture: i386
Date: Thu May 20 11:35:47 2010
DkmsStatus:
 tp-smapi, 0.40, 2.6.32-22-generic, i686: installed
 tp-smapi, 0.40, 2.6.32-21-generic, i686: built
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: LENOVO 2007FVG
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-22-generic root=UUID=af3a1ce5-7137-4d36-a36b-648a7093f5df ro quiet splash processor.username_cstate=2
ProcEnviron:
 LANG=de_DE.utf8
 SHELL=/bin/bash
SourcePackage: xorg
dmi.bios.date: 08/27/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 79ETE5WW (2.25 )
dmi.board.name: 2007FVG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr79ETE5WW(2.25):bd08/27/2009:svnLENOVO:pn2007FVG:pvrThinkPadT60:rvnLENOVO:rn2007FVG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2007FVG
dmi.product.version: ThinkPad T60
dmi.sys.vendor: LENOVO
system:
 distro:             Ubuntu
 codename:           lucid
 architecture:       i686
 kernel:             2.6.32-22-generic

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid

-- 
heavy display corruptions with KMS and x1400
https://bugs.launchpad.net/bugs/583245
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