I just upgraded Ubuntu to 18.04 from 16.04. My screen resolution is now stuck at
1280 x 1024, and
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192 VGA-1 connected primary 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.02*+ 75.02 1152x864 75.00 1024x768 75.03 60.00 832x624 74.55 800x600 75.00 60.32 640x480 75.00 59.94 720x400 70.08 HDMI-1 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis)
I normally have a much higher screen resolution.
I am not sure, but I may have had the restricted drivers installed before the upgrade... When I attempt to install Additional Drivers, I see this dialog, which doesn't seem right:
What might have gone wrong, and how I fix it?
My question is similar to After upgrading to 12.04, my screen resolution is small , but I do not understand the given answer...
What does "open Restricted Drivers again" means? I restarted and tried: same as above.
The solution seems to have been to re-install... And if I want to re-install, what is the simplest way (without having to build a boot disk and all)?