[   63.076337] nvidia: module license 'NVIDIA' taints kernel.
[   63.076340] Disabling lock debugging due to kernel taint
[   63.078941] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[   63.079208] nvidia: Unknown symbol mcount (err 0)
ERROR: Installation has failed.  Please see the file '/var/log/nvidia-installer.log' for details.  You may find suggestions on fixing installation problems in the README available on the Linux driver download page at www.nvidia.com.