[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 #17 from Chris Wilson <chris at chris-wilson.co.uk> ---
One possible explanation:

xserver commit 9bc01dfc7070a40f5948588895b3a11dd1636d0e
Author: Axel Davy <axel.davy at ens.fr>
Date:   Sat Sep 27 23:17:13 2014 +0200

    Fix present_pixmap when using present_notify_msc

    Calling present_notify_msc could cancel a pending pixmap presentation.

    Signed-off-by: Axel Davy <axel.davy at ens.fr>
    Reviewed-by: Keith Packard <keithp at keithp.com>
    Signed-off-by: Keith Packard <keithp at keithp.com>

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