[Bug 109618] Intel TearFree feature stops working at random

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109618

--- Comment #9 from Sultan Alsawaf <sultan at kerneltoast.com> ---
(In reply to Chris Wilson from comment #7)
> The last flip wasn't reported as a failure -- just to check that corresponds
> with maximising Chromium and tearing? There is a fun bit, in the presence of
> DRI3, it is allowed to take over control of the frontbuffer (because it's
> meant to be flipping) but that does allow clients to render into scanout and
> that might just be the case.
> 
> If you recompile xf86-video-intel with --enable-debug=full, there will be a
> lot of information (largely noise) about what the clients are doing and what
> TearFree is up to.

As you suspected, the issue is not present with DRI2; it only occurs with DRI3.

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