ubuntu-x-swat team mailing list archive

[vilmos <761065@xxxxxxxxxxxxxxxxxx>]

Yesterday I updated from the xorg-edgers ppa and the bug seems to be
gone now.  I even set the semaphore parameter to "0", which was a sure
way to trigger this problem, and now there are no error messages about
GPU hangs in dmesg.

This Phoronix article also suggests that this problem was fixed in mesa
7.11-devel, not in the kernel:

http://www.phoronix.com/scan.php?page=article&item=intel_snb_natty&num=1

Right now I have the latest xorg-edgers packages with kernel
2.6.39-0.5~20110427 from kernel-ppa , and everything is running
smoothly.

Any Ubuntu developers care to track down which mesa commit(s) should be
backported to Natty?  Would be great if I could go back to stable Natty
packages.

-- 
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https://bugs.launchpad.net/bugs/761065

Title:
  [Sandybridge] Spurious "*ERROR* Hangcheck timer elapsed... blt ring
  idle" messages in dmesg when using compiz