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Re: Xorg tearing fix on Intel HD Graphics 4000


From: Mark H Weaver
Subject: Re: Xorg tearing fix on Intel HD Graphics 4000
Date: Wed, 28 Jun 2017 14:14:55 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

Andy Wingo <address@hidden> writes:

> On Tue 27 Jun 2017 19:43, Mark H Weaver <address@hidden> writes:
>
>> In the meantime, how would you feel about pushing the following commit
>> to master?  It would still allow the use of SNA by explicitly asking for
>> it in xorg.conf, but auto-configuration would choose UXA by default.
>>
>> What do you think?
>
> Looks good to me.

Pushed as commit b049ae2f9708794f83c41171c19ffdfe4f11807e on master.

> We should report the problem though... ok I did that here:
>
>   https://bugs.freedesktop.org/show_bug.cgi?id=101620

Thank you!  I see that there has already been an informative response
from Chris Wilson:

  The issue is that gnome-shell is not synchrosing its texture reads
  with X rendering because mesa's glXWaitX() is broken.

      Mark



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