I tried 10x to reproduce the problem without success (login/logout). I was possible to hibernate and suspend as well. This option seems to solve the problem. I am using a newer gdm version as well (2.20.6-0ubuntu1) but problem was happening with it if I don't use the cited option.
Just to keep the bug tracker up to date. I will test more. I have a Dell Latitude D505 with Intel 855GM.
Following the comment, I added ForceEnablePipeA to xorg.conf, like below
Section "Device"
... <other options here> ...
Option "ForceEnablePipeA" "true"
EndSection
I tried 10x to reproduce the problem without success (login/logout). I was possible to hibernate and suspend as well. This option seems to solve the problem. I am using a newer gdm version as well (2.20.6-0ubuntu1) but problem was happening with it if I don't use the cited option.
Just to keep the bug tracker up to date. I will test more. I have a Dell Latitude D505 with Intel 855GM.