Monitors may be the hardest thing in Linux! I have a monitor which has stopped working after I fiddled with the setup as part of setting up GPU passthrough. There is definitely some kind of setting / config file that's keeping it broken; if I live boot an .iso from USB then the monitor works fine.
How can I clear any saved settings entirely so that the system auto-detects the monitor again? I have deleted any
.conf file from
/usr/share/X11/xorg.conf.d, and there is no
~/.config (although I gather there's meant to be one).
EDIT: Also tried
rm -rf ~/.local/share/kscreen followed by a reboot to no avail.