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[ubuntu] Display corruption and crashes running 12.04 with Nvidia drivers

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http://ubuntuforums.org – Hello all. Ever since I upgraded from 11.10 to 12.04 I've been having display problems. Basic symptom is that the display buffer appears corrupted. It seems to affect the alt-tab display most often - instead of seeing little pictures of the windows the boxes for the windows have garbage in them, random text and messed up images. After that it spreads to the status bar at the top of the screen and then into windows themselves - for example, Emacs will have garbage text across the top of the window and inside the buffer area. Sometimes switching to a VT and back to X will clear it, sometime (Hardware)