Ubuntu 18.04 Detects 2 monitors when I only have one. My monitor model is LG LG22MP68VQ-P. HDMI supported. I have to rearrange the settings to get the screen. Can anyone help me out?
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Run xrandr -q
and find the false display.
Then get the full name from
ls /sys/class/drm
It will look something like "card0-DSI-1".
Edit /etc/default/grub
and change
GRUB_CMDLINE_LINUX=
to include
"video=DSI-1:d"
or the equivalent of the card name you got from the ls
command above and then finally run
sudo update-grub
and reboot.

Lewis Smith
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