Is this a regression? Were you able to play 3D games with earlier versions? Please try re-booting with earlier kernels (go into grub to select them) and see if that is sufficient to get the 3D games to work properly again.
Since disabling KMS is enough to make this work properly, I'm gathering that this is an issue with the DRM code in the kernel. So I'll reassign to the kernel for now. ** Package changed: xserver-xorg-video-ati (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- No Fullscreen-3D/Resolution switching with KMS enabled https://bugs.launchpad.net/bugs/549601 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