Thanks! It looks like the problem is indeed confined to Wayland sessions, if it is a problem at all.
If you have display scaling set to a value of around 300% then a reported desktop resolution of 1280xSomething is expected and not a bug. In a Wayland session, please open [Settings > Devices > Screen Display] and take a screenshot of that window. Then attach it here. ** Changed in: xserver-xorg-video-amdgpu (Ubuntu) Status: New => Incomplete -- 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/1826316 Title: [amdgpu] two 4K monitor setup - resolution not properly recognized To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1826316/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp