[Bug 94829] X crash when starting minetest with compositing and DRI3 PRIME

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94829

--- Comment #25 from Chris Wilson <chris at chris-wilson.co.uk> ---
Well the patch didn't prevent the queue exhaustion. 

The first issue on flip failure is that we try to restore the previous mode +
framebuffer. However, Present is lying and we the frontbuffer it is using no
longer matches the Screen, so the framebuffer we restore doesn't match. Then
when we fall back to copies rather than flips, Present is copying to its
frontbuffer which isn't on the screen any longer.

That should recover when the Present mode changes (i.e. when it changes from
fullscreen flips).

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