Could it be the EDID of the display? That's at least what I guess to be the cause at the moment. The attached part of my Xorg.0.log suggest that (to me). (Gutsy with nvidia did not have this problem on the same machine.)
** Attachment added: "Xorg.0.log.part.txt" http://launchpadlibrarian.net/13960348/Xorg.0.log.part.txt -- [nvidia-glx-new] only stripes with NVS140M https://bugs.launchpad.net/bugs/222027 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs