Bug#697029: [squeeze -> wheezy regression] i915_hangcheck_ring_idle error makes the computer lag using intel core i7-620 integrated gpu

[Jonathan Nieder <jrnieder@gmail.com>]

Hi Pierre,

Pierre AUSSAGUEL wrote:

> I upgraded my laptop from sqeeze to wheezy.
> When using gnome the computer become sluggish after a few minutes. dmesg is
> full of : " [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed...
> render ring idle [waiting on 75118, at 75120], missed IRQ?"
> If I log out and use gnome classic, the problem does not happen.

Interesting.  Thanks for reporting.

Can you test 3.7.y from experimental as well?  If it exhibits the
problem, please report this upstream following the instructions at

  http://intellinuxgraphics.org/how_to_report_bug.html

and let us know the bug number so we can track it.  If it doesn't, we
can try to pin down which usptream patch fixed it and apply the same
to the wheezy kernel.  So either result is progress.

> [Subject: Complementary information]

Please keep in mind that these appear as emails in a crowded inbox, so
the subject line can be a good place to put valuable context.

> I installed kernel 2.6.32-5-amd64 and the problem does not show up, at least
> after a few hours of testing. (I removed the semaphore=1 from the grub line)

Thanks for verifying.

Hope that helps,
Jonathan