kernel : (kernel-2.6.14-1.1637_FC4smp) nvidia-glx.i386 1.0.7676-0.lvn.3.4 kernel-module-nvidia-2.6.14-1.1637_FC4smp.i686 1.0.7676-0.lvn.3.4 I now get error running glxgears : % glxgears NVIDIA: could not open the device file /dev/nvidiactl (Permission denied). NVIDIA: could not open the device file /dev/nvidiactl (Permission denied). Segmentation fault % ls -l /dev/nvidiactl 0 crw------- 1 root root 195, 255 Nov 11 11:52 /dev/nvidiactl After this I tried running as root and its fine. Then I did chmod go+rw /dev/nvidia* and non-root user is now fine. Odd thing - after doing the livna update I swear i ran this and it tested fine. Today its not working ... could something have changed it overnight? g/