I’ve found the following warning in dmesg:
NVRM: “Your system is not currently configured to drive a VGA console
on the primary VGA device. The NVIDIA Linux graphics driver
requires the use of a text-mode VGA console. Use of other console
drivers including, but not limited to, vesafb, may result in
corruption and stability problems, and is not supported.”
I’ve had some problems with instability so I would be grateful for info about how to do the required configuration.