heavy display corruptions with KMS and x1400

[Max Liebkies]

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

[Sean Kirksey (fear-not)]

I have the same bug:
Mobility Radeon X1270

[Max Liebkies (mliebkies)]

After doing some further investigation, looking into the radeon-driver source etc I found out that this most likely has something to do with PLL. After searching for "pll quirk" (which is what the x1400 needs, imho) I found similiar bugs which I haven't discovered before:
1. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/509273
2. http://<email address hidden>/msg2240533.html

So, in a way: Sorry for the duplicate...

[Max Liebkies (mliebkies)]

Oh, while we're at it. Off-Topic question: Is there any listing+description of the "radeon" registers?

[loe (thabastlwastl)]

I had the same issues with the beta of lucid, and then with the final the issues semed to be resolved - up to yesterday: It started with the horizontal white stripes and resulted in an unusable screen. Just like you described it.

Using x1400 in an thinkpad z61m.

[Sergey (lordofwinds)]

I have the same bug, too. ATI x1270, Packard bell dot m/a.

[Istvan Palfalvi (ppista)]

I also have this bug with Thinkpad R60, x1400, Ubuntu 10.04.1

[Max Liebkies (mliebkies)]

I didn't give this bug much attention lately but upgrading to Natty Beta 1 fixed it for me.

[penalvch (penalvch)]

Max Liebkies, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/583245/comments/8 regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.