ubuntu-x-swat team mailing list archive

[Dmitriy Geels <641346@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-intel

Not sure if it's xorg or drm bug. Doesn't depend on kernel version:
reproduced on stock 10.04 kernel and all newer kernels for lucid from
http://kernel.ubuntu.com/~kernel-ppa/mainline/.

My motherboard: Asus P5B-VM
Running Ubuntu 10.04.1, 2.6.34-020634-generic x86_64

Several months ago, after one of updates from xorg-edgers, sudden system deaths begun.
Death sympthoms:
- picture on display freezes, mostly during compiz desktop slide-switching or opengl screensaver running, rarely during zoom
- most times kernel even doesn't react to magic key combination (sometimes it's still responses to SysRq+R,S,U,B)
- nothing about kernel panic or some errors in logs (after successful emergency sync,unmount,reboot)

Making some expirements these months, I found out, that DVMT bios settings directly affects this issue.
I think, video driver or DRM have problem with video ram area configuration, and this causes video adapter to write to kernel memory.

Because of bug in apport, I was unable to send report using ubuntu-bug.
Tell if some system information required.

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 crash edgers lucid

** Tags added: lucid

** Tags added: amd64 crash edgers

** Summary changed:

- [xorg-edgers][965G] enabled DVMT in bios causes sudden system deaths
+ [xorg-edgers][i965] enabled DVMT in bios causes sudden system deaths

-- 
[xorg-edgers][i965] enabled DVMT in bios causes sudden system deaths
https://bugs.launchpad.net/bugs/641346
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