I had same problem with Wine on 9.04 32-bit desktop install with Nvidia drivers (installation upgraded from 8.10 32-bit desktop). I managed to solve it by changing identifier of "video" user group from 1001 to 44 to match group given in /etc/modprobe.d/nvidia-kernel-nkc.conf
Contents of my /etc/modprobe.d/nvidia-kernel-nkc.conf : alias char-major-195* nvidia options nvidia NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=44 NVreg_DeviceFileMode=0660 -- NVIDIA: Direct rendering failed https://bugs.launchpad.net/bugs/281747 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-177 in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp