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Created attachment 490982 [details] Screenshot showing corruption of background picture For a while now I've been seeing corruption of various bitmaps or glyphs on my desktop. I think this started when I switched to F-15 and thus gnome-shell. So this could be a mesa issue. Most of the time I'm seeing one of 2 instances of corruption: -The upper left corner of the title bar of a window (but not all windows) becomes a black rectangle, I've been seeing this since I started using gnome-shell I think. -Some parts of certain glyphs are missing usually a number of rows from the top of the glyph (character) are missing. This is more recent I believe Today I got a corrupted background picture (see attached screenshot), which is a first. This all is without an xorg.conf, fully up2date F-15 running gnome-shell, and no special settings. I'll also attach xorg.log and dmesg from the boot where I got the corrupt background. I believe the corruption is happening in cached pixmaps inside the video/gpu ram. Sometimes if I switch virtual consoles, or start enough windows fully obscuring the corrupted bits, things go back to normal.
Created attachment 490984 [details] xorg.log
Created attachment 490985 [details] dmesg
Created attachment 491057 [details] Screenshot showing corrupt glyphs Notice the corrupted "e" as Well as the missing of the top of the h, making it look a bit like an n. This problem went away pretty quickly, I noticed it in firefox too. Then started gedit to see if I saw it there too, I didn't and after that it was gone in thunderbird and firefox too.
Created attachment 491180 [details] Screenshot showing window decoration corruption
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