Created attachment 565720 [details] Firefox-7-black-stripe.png User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.1 (KHTML, like Gecko) Ubuntu/11.04 Chromium/13.0.782.215 Chrome/13.0.782.215 Safari/535.1 Steps to reproduce: Open a web page with images using firefox 7.0.1 in ubuntu 11.04 Actual results: Some images are incorrectly rendered, either with black stripes, either duplicating blocks. Attached file shows a typical case. Expected results: Images should be properly render.
Can you please try running firefox in the Firefox safemode (that will disable the hwardware acceleration) ? http://support.mozilla.com/en-US/kb/Safe+Mode Please also provide a link to your example image. Is the black stripe always on the same place with the same image ?
The problem appears in safe mode too. Sending a link to the original image is useless because the problem is random, and not related to a specific website. I used flickr because there mostly pictures and it is easier to reproduce the error. I can confirm that: - The problem appears in safe mode too. - Reloading the page doesn't fix the problem. - The image in the cache is fine (yes, I actually searched through the chache to check that). - Closing the tab and restoring it makes the image display properly (I checked this *after* looking in the cache). I am attaching a screenshot of the second kind of error (duplicated blocks), it might be a different bug, but looks pretty much the same to me.
Created attachment 565782 [details] Cache file is fine The file stored in the chache is not corrupted. Corruption seems to be only in visualization.
Can you please download a build from mozilla.org, extract it for example in /tmp and run it from there ?
Can you set the environment variable MOZ_DISABLE_IMAGE_OPTIMIZE to 1, and then re-run Firefox? I suspect X of causing this issue.
The problem disappeared in Firefox 7.0.1.