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[Frank Piper <567696@xxxxxxxxxxxxxxxxxx>]

Lucid/10.04. Also seeing this issue. When System/Prefs/Appearance/Visual Effects set to anything other than None, system fails within an hour or so:
- Mouse delayed/slow response; system otherwise unresponsive.
-  Xorg gets wedged and goes to 100% CPU. 
- Xorg log contains "EQ overflowing. The server is probably stuck in an infinite loop."
- kern.log contains "Uhhuh. NMI received for unknown reason a1 on CPU 0"

Backtrace & whatnot on request.

Recovery: SSH in and reboot, or do the alt-PrtSc-R,E,I,S,U,B shuffle.

T60, X1400, Lucid 10.04 with all patches up to date, 2.6.32-27-generic,
vanilla /etc/default/grub. Desktop extended onto an external monitor
using xrandr.

Workaround: set System/Prefs/Appearance/Visual Effects to None... with
this setting system is rock-solid (but boring).

Thanks for any help/ideas/suggestions.

Tx for

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https://bugs.launchpad.net/bugs/567696

Title:
  [Radeon] [Lucid] [mi] EQ overflowing. The server is probably stuck in
  an infinite loop