ubuntu-x-swat team mailing list archive

[Robert Hooker <sarvatt@xxxxxxxxx>]

Someone has posted a patch that fixes this issue on the intel-gfx
mailing list and it should hopefully be in 3.0-rc4. afterwards we will
be able to cherry-pick it into stable. I have test kernels available
here that fix the issue, with the side effect of also massively speeding
up 3D with the default i915.semaphores=0 from my tests, please do post
your results if you test it.

fix:
https://patchwork.kernel.org/patch/879532/

test kernels:
http://kernel.ubuntu.com/~sarvatt/lp761065/

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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

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