I've also been experiencing this exact issue on xubuntu 13.04. I hadn't
ever seen it until 13.04.
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Title:
saucy has frequent image corruption
** Changed in: xserver-xorg-video-intel
Status: Confirmed = Fix Released
** Bug watch added: freedesktop.org Bugzilla #66163
https://bugs.freedesktop.org/show_bug.cgi?id=66163
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kernel commit 22fd5ca947b58901927d100d2b1aa0f1672b3435
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Fri Jun 28 16:54:08 2013 +0100
drm/i915: Only clear write-domains after a successful wait-seqno
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Triaged = Fix Committed
Sebastien, once 2.21.10 hits saucy, can you please let me know how we
are faring here? And please include the latest steps to trigger the bug.
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ok, new update ... sorry my testing the other day was incorrect, I had
the FORCE_FULL_SYNC define set from a previous testing. Using git master
from intel I still see a frequent corruption on e.g the new tab screen
:-(
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** Tags added: corruption
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Title:
saucy has frequent image corruption (intel, sna)
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** Attachment added: Bildschirmfoto vom 2013-06-12 10:45:34.png
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1189850/+attachment/3701389/+files/Bildschirmfoto%20vom%202013-06-12%2010%3A45%3A34.png
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I'm also getting this bug from time to time (it's gotten better with this #9
update though).
Screenshot is attached.
Before I even got this jittery-graphics-bug on websites, not only
about:newtab. However until now i didn't get this behavior again.
Is my screenshot showing a result of this bug?
The newtab looks like this bug, and image swapping is the same (the
timing was just right to get a recognisable image of the same size).
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Title:
@Chris: I will take a screenshot if that happen again
I'm running an update with http://cgit.freedesktop.org/xorg/driver/xf86
-video-intel/commit/?id=15b92c98755c709f41e59baeb206e5a3e56e3178 and
didn't see the issue yet, seems good so far, thanks for the work on
fixing that bug ;-)
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hum, it worked great for the whole day today, until now when I ran into
that
** Attachment added: corrupted image screenshot
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1189850/+attachment/3701579/+files/corrupted.png
** Changed in: xserver-xorg-video-intel
sorry, ignore the previous comment, I was running with #define
FORCE_FULL_SYNC 1, that seems a different issue
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Title:
saucy has frequent image
It doesn't seem to be happening if I use uxa in xorg.conf
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Title:
saucy has frequent image corruption (intel, sna)
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It's the read-read optimisation that was re-enabled. Not sure where the
root cause is as reproducing it reliably and quickly is tricky.
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i.e. not even sure if it is not a kernel bug.
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Title:
saucy has frequent image corruption (intel, sna)
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I can trigger the bug quite easy in saucy (open a tab in firefox do it
almost every time), let me know if I can help testing/providing debug
informations
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The corruption you see in the new tab panel happens when that image is
generated and stored to disk. It's debugging the corruption as it occurs
is the trick.
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My guess is that there is a path with a missing sync point, like this
one:
diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index 69a151c..be73e27 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -4861,6 +4861,13 @@ sna_copy_boxes(DrawablePtr src, DrawablePtr dst, GCPtr
gc,
** Bug watch added: freedesktop.org Bugzilla #61628
https://bugs.freedesktop.org/show_bug.cgi?id=61628
** Also affects: xserver-xorg-video-intel via
https://bugs.freedesktop.org/show_bug.cgi?id=61628
Importance: Unknown
Status: Unknown
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Thanks Chris, I've tried your git commit [1] and it fixes the issue for
me
[1] http://cgit.freedesktop.org/xorg/driver/xf86-video-
intel/commit/?id=7d91051c50210560dbd93a9e36f30d9f74ce9133
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided = High
** Changed in:
** Branch linked: lp:ubuntu/saucy-proposed/xserver-xorg-video-intel
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Title:
saucy has frequent image corruption (intel, sna)
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This bug was fixed in the package xserver-xorg-video-intel -
2:2.21.9-0ubuntu2
---
xserver-xorg-video-intel (2:2.21.9-0ubuntu2) saucy; urgency=low
* sna-make-sure-the-source-is-coherent.diff: Fix corruptions on firefox
(LP: #1189850)
-- Timo Aaltonen tjaal...@ubuntu.com Tue,
hum, that patch improved things (I don't get the issue on the new tab
preview grib when it was consistent before) but I just ran into a
similar issue on a merge request url...
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Any chance you can capture a screenshot of it? Or failing that a
photograph, and it would be very useful to know if it is not capturable.
If you can reproduce it again, you can try FORCE_FULL_SYNC again, that
would identify whether it is the same issue.
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I remembered another path that reads from a source CPU pixmap that made
a few presumptions about coherency, so please also test with 15b92c9.
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