[Bug 97914] Redraw lag on Ivy Bridge since 1f6dfc9df678

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97914

--- Comment #37 from John Lindgren <john at jlindgren.net> ---
(In reply to Jean Delvare from comment #36)
> I have to admit I'm a bit puzzled. This bug only seems to happen on Ivy
> Bridge processors, using the updated intel ddx driver. ...

#100408 indicates that Haswell is affected as well.

My impression is that most people affected by this bug are switching to the
modesetting driver.  I did so a couple of months ago.  Glamor acceleration
gives "good enough" 2D performance, and I haven't seen any similar drawing
bugs.

I also question blaming Mesa for this since the same version(s) of Mesa is able
to run modesetting on the same hardware without issue.  Theoretical questions
of "whose fault is it" aside, introducing this optimization/regression into the
Intel driver without sufficient testing shows a lack of concern on Intel's part
for its customers, and I'll take that into account in my next hardware
purchase.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20170327/3938980d/attachment.html>