Okay so today I turn on my pc and my monitor is stuck at 640x480, I attempt to change the display settings but it wont let me change any of the options. I tried to switch to a different Nvidia driver (open source and proprietary) to no avail, tried switching back to the Nouveau driver too, still no luck. Not sure what caused this, but I think its happened due to something that updated, I remember when I was last on my pc letting it do some updates. How can I diagnose this and fix it?

Am on Xbuntu Distributor ID: Ubuntu Description: Ubuntu 18.04.2 LTS Release: 18.04 Codename: bionic

  • Edit... I just tried another proprietary driver (version: 4.6.0 NVIDIA 390.116) and it works fine. Testing switching back to open source now... – Z.Davey Apr 28 at 21:46
  • Just tried version: 4.6.0 NVIDIA 430.09 (open source) (which I tried before :S) and it works, not sure what happened, but it must not have installed correctly. switching to the proprietary 390.116, and back seems to have fixed it. – Z.Davey Apr 28 at 21:50

This looks like nomodeset.

Make sure that it isn't set somwhere in your ubuntu configuration

grep nomodeset /etc/ -rs

This should print by default only:


If it appears somwhere else, i.e. in /etc/default/grub - remove it and update grub configuration with

sudo update-grub2

Then reboot.

Also check which graphics driver is in use.

lspci -v

Look for your graphics card or VGA string sections.

In case it's

Kernel driver in use: nouveau

open applications menu and go to Updates -> Settings -> Additional Drivers

or via terminal:

/usr/bin/python3 /usr/bin/software-properties-gtk --open-tab 4

and install one of proprietary drivers available.

Keep in mind that after switching drivers you need to reboot your PC.

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