Description of problem:
I've been noticing since I started running the RHEL 6 internal beta this week, Firefox in RHEL 6 randomly seems to present corrupted images. I've noticed this on planet fedora (see screenshot), on identi.ca, on amazon.com - basically, on a wide variety of sites. It tends to happen to smaller images around 100x100 (avatar-sized graphics seem to be the most frequently affected.) I have noticed that sometimes the page and graphics will load fine, then I'll switch windows, and when I switch back one or two images on the page will be corrupted when they were not corrupted before I switched windows.
Version-Release number of selected component (if applicable):
I don't think it is very easy to reproduce, but it happens very frequently. I'm not sure what is triggering it, but as I mentioned identi.ca and blog planets seem to trigger it a lot, and it also may be associated with switching windows back and forth.
Created attachment 412068 [details]
see the corruption in the image?
It seems really easy to reproduce if you visit compfight.com and search for something (try searching for 'pony' - the thumbnails the site generates seem to be the perfect size for triggering the issue)
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release. Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
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What X server, kernel, and graphics driver?
the driver is the "intel" driver
(video card 8086:2a02:17aa:20b5 Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller rev 12)
I can see it from time to time myself. I think, it's the time to take a look at it.
I confirm this issue as well.
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
Created attachment 412954 [details]
screenshot of weird artifacts in vim
I don't know if it's related, but on the same system I'm also seeing these weird artifacts in vim (see the screenshot). They're towards the bottom of the screen.
I will go out on the limb and claim that this one of many many many presentations of bug 571785.
*** This bug has been marked as a duplicate of bug 571785 ***