[Bug 61628] [ilk] Corrupted rendering of page previews in Firefox with >xf86-video-intel-2.20.18

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61628

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
There was a related bug, fixed with

commit 19bd005056a2083de64753681b96716996e4237d
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Feb 22 12:05:04 2013 +0000

    sna: Avoid migrating and making the GPU bo busy prior to mmapping it

    References:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1131134
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

that I thought was already in 2.21.3 and so you had tested it. It is actually
in master, so can you try compiling from git and checking if that fixes the
issue?

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