Some pretend to have fixed it, but later someone points that it is not fixed or the bug appears less often, some bug managers declare the issue fixed even though the last message from a user declares that the screen/font corruption is still there. What an horrible mess !
I have these bugs with kernel 2.6.38, 2.6.39, 3.0.0.
I upgraded all the graphics packages several times in Debian Experimental. The bugs are still present. They only disappear if I go back to 2.6.37. I have an Intel G33 GPU.
Also : bug reports about "[drm] MTRR allocation failed. Graphics performance may suffer" offer solutions that do not work, like GRUB_CMDLINE_LINUX="enable_mtrr_cleanup mtrr_spare_reg_nr=1".
It is incredible to see so many bugs closed after false solutions are given.
I suffer from these bugs and no solution works. The latest kernel in Debian Experimental 3.1.rc4 changes nothing, neither do the latest graphics packages.