This might be some kind of misconfiguration of the proprietary Nvidia driver. Please try:
1. Uninstall the Nvidia driver and reboot.
2. Reinstall the Nvidia driver and reboot.
If that doesn't fix the problem then maybe you don't really need the proprietary driver so just do:
This might be some kind of misconfiguration of the proprietary Nvidia driver. Please try:
1. Uninstall the Nvidia driver and reboot.
2. Reinstall the Nvidia driver and reboot.
If that doesn't fix the problem then maybe you don't really need the proprietary driver so just do:
1. Uninstall the Nvidia driver and reboot.