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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [sna gen4 w/a] corrupt rendering (including wrong rendering of characters and flickering on redraw)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=55500#c153">Comment # 153</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [sna gen4 w/a] corrupt rendering (including wrong rendering of characters and flickering on redraw)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=55500">bug 55500</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=55500#c145">comment #145</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=91383" name="attach_91383" title="gedit in openbox with 2.99.907 GM45 SNA">attachment 91383</a> <a href="attachment.cgi?id=91383&action=edit" title="gedit in openbox with 2.99.907 GM45 SNA">[details]</a></span>
> gedit in openbox with 2.99.907 GM45 SNA
>
> I am finding that GM45 SNA seems unusable with 2.99.907 - git bisect pointed
> to the bad commit as:
> 9289e2c56b7f0cc78c5123691ad96611f0e04bed is the first bad commit
> commit 9289e2c56b7f0cc78c5123691ad96611f0e04bed
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Mon Dec 16 11:39:20 2013 +0000
>
> sna/gen4: Sacrifice performance to workaround render corruption
>
> The problems are lines of text keep disappearing (and reappearing) in gedit,
> and the occasionally the screen becomes unresponsive for a short time and
> these messages appear in dmesg:
>
> [ 1702.349954] [drm] stuck on render ring
> [ 1702.349966] [drm] capturing error event; look for more information in
> /sys/class/drm/card0/error
> [ 1702.354334] [drm:i915_set_reset_status] *ERROR* render ring hung inside
> bo (0x32a1000 ctx 0) at 0x32a1110</span >
Ok, I think I have this fixed:
commit 9d8473c5d9489db439aca73f470bda29a22ebab6
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Tue Jan 7 13:43:35 2014 +0000
sna/gen4: Check for available batch space before restoring state after CA
pass
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - GPU crash (GM45) with kernel 3.13-rc5"
href="show_bug.cgi?id=73348">https://bugs.freedesktop.org/show_bug.cgi?id=73348</a>
References: <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [sna gen4 w/a] corrupt rendering (including wrong rendering of characters and flickering on redraw)"
href="show_bug.cgi?id=55500">https://bugs.freedesktop.org/show_bug.cgi?id=55500</a>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>></pre>
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