I installed the last nvidia driver from the nvidia ppa. I installed nvidia-378. After the reboot I open nvidia-settings and it's completely empty. If I run it from the terminal it says
ERROR: Error querying enabled displays on GPU 0 (Missing Extension). ERROR: Error querying connected displays on GPU 0 (Missing Extension). ** Message: PRIME: No offloading required. Abort ** Message: PRIME: is it supported? no ERROR: nvidia-settings could not find the registry key file. This file should have been installed along with this driver at /usr/share/nvidia/nvidia-application-profiles-key-documentation. The application profiles will continue to work, but values cannot be prepopulated or validated, and will not be listed in the help text. Please see the README for possible values and descriptions.
How can i solve this problem?