Updated, now no nvidia driver

[Aravisian]

Can you please try this solution:

After upgrade Nvidia driver wont install and can only use 1 monitor

Please open a terminal and run: (You can copy and paste) sudo apt remove --purge '^nvidia-.*' sudo apt --fix-broken install && sudo apt update sudo apt install nvidia-driver-550 nvidia-dkms-550 If all goes well, reboot and test. If not, please relay any errors here.