I changed the group to my user's name and thus i could access the file. there exists no group called video if I rightclick in nautilus on the file to change its permission. After I received your email i reverted the group back to root as the group video does not exist on my system. ls -l | grep nvidia crw------- 1 root root 195, 0 2008-05-28 18:45 nvidia0 crw------- 1 root root 195, 1 2008-05-28 18:45 nvidia1 crw------- 1 root root 195, 2 2008-05-28 18:45 nvidia2 crw------- 1 root root 195, 3 2008-05-28 18:45 nvidia3 crw------- 1 root root 195, 255 2008-05-28 18:45 nvidiactl
