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 Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs