Comment 4 for bug 568605

User comment from dupe bug:

This does look like it's similar to my bug 568605, but I used the kernel as the thing to blame, since this problem also affects the standard text-mode console with KMS. I am currently running the packaged upstream to see if the problem persists there, and will try other upstream kernels built using the Ubuntu config files to see if I can replicate this at all upstream. I don't know where the git kernel trees are for Lucid, or I would try to bisect the problem (though note that as unreliably reproducable as this problem appears to be, it may take me longer to bisect than there is time until release day; I'd expect to be able to perform one bisection step every 24–48 hours to try to determine if the problem exists in the kernel or not). Usually anytime I bisect a kernel problem, there are anywhere from 8 to 15 steps involved, so I'd expect anywhere from 16 to 30 days to work through a full bisection properly unless I can find some way to trigger this bug on-demand.