[Bug 84252] [SNA/HSW] DRI3 rendering gets stuck waiting for present idle notify event

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84252

--- Comment #19 from Tobias Jakobi <liquid.acid at gmx.net> ---
I haven't found time yet to create the traces. Just some observations:

Updating mesa fixes the issue with my current ingame configuration (which is
vsync off). I tracked this down to
[url=http://cgit.freedesktop.org/mesa/mesa/commit/?id=f7a355556ef5fe23056299a77414f9ad8b5e5a1d]glx/dri3:
Use four buffers until X driver supports async flips[/url].

I had vsync disabled since initially I wanted to benchmark the HSW. With PRIME
and vsync disabled ingame the rendering however is very 'shacky', to the point
where it's not playable.

I thus re-enabled vsync and the issue reappeared (strange I guess). Initial
tests show that [url=https://www.freedesktop.org/patch/34966/]Correct
present_notify_msc vblank target[/url] seems to fix the issue (with vsync on).

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20141016/5d7b158a/attachment.html>