Comment 63 for bug 861268

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Steve McIntyre (steve-mcintyre) wrote :

I'm seeing something that sounds similar to this (I think), but I'm not using Unity at all. Using Xorg, xdm and fvwm and periodically I get black and white blocks of corruption all over the screen. Forcing a redraw fixes *most* of the blocks, but not all.

It *seems* that if the system is busy with I/O that makes the problem more likely to show up. It almost looks like Is there an overlap of data buffers with the framebuffer!