I'm not sure if I got the same problem: Everything worked fine until Feisty. My card is a KM400 and since Feisty I get complete freezes (but the mouse cursor is still moveable) when i run ANY 3d related application. Even a simple glxinfo freezes the system. I don't find any error messages in the logs and i can start the X-Server with via specified in the xorg.conf but as soon as 3D is required the fun is over.
I solved this problem for me by downgrading libgl1-mesa-glx and libgl1 -mesa-dri from 6.5.2-3ubuntu7 (Feisty) to 6.5.1~20060817-0ubuntu3 (Edgy). My card has never worked by default, even if Ubuntu recognizes it in the installation process (which it does since Edgy, I guess). Additional options which I have always needed to get it working are: Option "VBEModes" "true" Option "DisableIRQ" Option "EnableAGPDMA" -- computer freezes with some applications using 3D https://bugs.launchpad.net/bugs/43154 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs