Public bug reported:
Running Jaunty on a Panasonic CF-R3 notebook with intel 855GM graphics
chipset and pentium M processor. X (running compiz) will completely
freeze seemingly randomly (fairly often though - easily 5 times a day),
necessitating a hardware restart (or REISUB) although the mouse pointer
is still responsive and disk activity is still continuing. Another
generic intel driver freeze it would seem.
I've tried the usual suspects with no avail:
happens on both UXA and EXA
with and without "MigrationHeuristics" "greedy"
Turning DRI off seems to fix the issue though.
Taking a look at my /var/log/kern.log, it seems that every time these lockups
occur i'm getting a kernel log error of:
Apr 29 12:49:26 mike-laptop kernel: [ 1032.985907] mtrr: no MTRR for
e8000000,8000000 found
** Affects: ubuntu
Importance: Undecided
Status: New
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Jaunty - X freezing on intel 855GM - MTRR issue
https://bugs.launchpad.net/bugs/370292
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