Please help me to figure out why after some updates additional drivers had become unavailable? It tells me that at this time it is used manually installed drivers - not even Nouveau driver. Is it OK?
And if it's not normal how can I revert to previous state? Thanks in advance.
This state means that you have installed some proprietary driver that is not available in current repositories. Maybe you installed one from a PPA or some other way.
You can keep using the current driver, or install one of the recommended ones.
Well, I have found an easy solution for this problem.
sudo ubuntu-drivers autoinstall
This updates all drivers, removes manually installed and after that all drivers become accessible.
This question/answer helped me:
How do I remove manually installed gpu driver in Ubuntu 18.04?
Thank you very much!
