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!
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!