[Bug 66990] [sna ivb] corruption with chromium

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66990

--- Comment #21 from Joe Peterson <joe at wildlava.com> ---
I'm not sure this helps, but I've been seeing what looks like exactly this bug
on my Lenovo T430s as well.  I first saw it when entering text: the garbled
long, horizontal rectangle changed as I typed (my typing was a part of it
and/or near it).  Like the reporter of this bug, the rectangles often appear as
if the width does not match the contents, causing offsetting/slanting of the
pixel lines (perhaps just one effect).

It's just been the past few weeks or less (approx.) that I remember noticing
it.  I am on xf86-video-intel 2.21.13-1 (Arch Linux), and kernel 3.10.2, but I
do believe I saw the issue with kernel 3.9.9 as well (and I know I saw it with
xf86-video-intel 2.21.12-1, also).

It happens at seemingly random times, and often I just see a random rectangle
(mostly in Chromium) with the garbled contents, but it goes away quickly when
something changes.  The rectangles sometimes look different than described
above, but I suspect it is the same cause.  I'll try to get a screen capture
next time I see it.

I'll attached my Xorg.0.log file, in case that is of help.

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