A little investigation and the following implements johnnyl33-k's workaround from the command line.
$ xrandr --output eDP --reflect xy --rotate inverted --mode 1366x768 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-amdgpu in Ubuntu. https://bugs.launchpad.net/bugs/1885474 Title: 1366x768 screen resolution broken, all other resolutions OK To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1885474/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

