if my git bisect went without errors, this is the commit causing the problems: a1f08b8850616952fb0babe2275eb36b13a380ec is the first bad commit commit a1f08b8850616952fb0babe2275eb36b13a380ec Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Thu May 3 14:53:29 2012 +0100 sna: Don't discard GPU buffer if we only want to read back for the operation Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> :040000 040000 1b90d49d261b8d1a4df27025df8fb02162864f9a 5df9ba640509b32f5c522c703e800dcb4b5e517e M src The bug is triggered when using chrome for a couple of minutes. For example, when zooming, old stuff is still visible (see attached sna_a1f08b8850.png).
Created attachment 61094 [details] sna_a1f08b8850.png
Created attachment 61095 [details] sna_a1f08b8850-2.png
my earlier bisect pointed to d47e98dd64c0b9fe2979db42622c5ee8168e8b35, but I think that was too hastily done bisect..
fcccc5528b8696fb4f9b3f9f528673b95d98a907 could also be the culprit, too.. =) but I can say with certainty that I used a206a1eee1fb for six days without problems.
Is there a particular site that demonstrates the error upon zoom? Using chromium-18 (Debian sid) on PineView doesn't seem to trigger the error, afaict so far.
it was quite easy to trigger with any site, the example in first screencap was randomly picked from news.google.com http://www.eweek.com/c/a/Mobile-and-Wireless/iPhone-5-to-be-Thinner-with-Bigger-Screen-306451/ but you don't necessarily trigger it every time, might require more browsing =) btw. I have gen6 (Core i5-2500K CPU), xorg-x11-server-Xorg-1.12.0-2.fc17.x86_64
And which WM? That will also influence timings and code paths taken.
openbox-3.4.11.2 without compositing
Created attachment 61230 [details] intel_reg.txt
Can you attach your Xorg.0.log? (In this particular case, I want to see which kernel.)
kernel 3.4.0-rc4-f7b00693, mesa 0ad0bc5af5679
Created attachment 61234 [details] Xorg.0.log
Should be fixed by: commit a3d37fb29f8dffb0e370ad95783994aaa7eccfaf Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Tue May 8 15:47:14 2012 +0100 sna: Force remapping for IO transfer Should fix regression from fcccc5528 (sna: Improve handling of inplace IO for large transfers) whereby it was aborting the transfer it we need to remap the buffer for the upload. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49546 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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