Fri, 6 Feb 2015 12:14:28 +0100 Csányi Pál <csanyipal@xxxxxxxxx>: > I looked into kernel log with 'dmesg | less' and searched for NVIDIA. > I found followings: > nvidia: module license 'NVIDIA' taints kernel. > Disabling lock debugging due to kernel taint > nvidia disagrees about version of symbol node_data > nvidia: Unknown symbol node_data (err -22) > > What can I do to solve this problem? If a reboot didn't fix it (for unloading/blacklisting nouveau), I'd say post a bug report so that nvidia-304xx-lts gets rebuilt. For that's what it seems to be, looking at the last bug about "symbol node_data" and comparing the build dates of linux-lts and the different nvidia packages. --byte