Comment 20 for bug 717114

no prob, thanks for the extra data.

So, at this stage, assuming that apw, stefano, kees, and eric are all seeing roughly the same bug, taking all their observations into account, the picture starts to look like this:

It appears there was a regression introduced with the introduction of the 2.6.38-1 kernel (going by Stefano's timing, and kees' test of 2.6.38 where the issue can't be seen). The issue is irregular but affects text rendering by interlacing pixels from text elsewhere in the given text buffer when doing rapid scrolling of large quantities of text. This most often shows itself in terminal windows but can also be seen sometimes in firefox's rendered text. The issue seems to appear more often with compiz but has been seen in metacity. Only a minority of users seem to be reproducing the behavior, suggesting these users have some sort of hardware or configurational aspect in common, but so far the commonality between the users is not known.

How does that sound to you guys? Did I miss anything or are there any holes you can poke in it? If not I think next step is to take the bug upstream.

I'd really like to hear from each person able to reproduce this if indeed booting 2.6.37 makes the issue go away, since that means a git bisection might be doable to isolate the faulty patch.