3.28: Freeze with second HiDPI Monitor
I am running Arch Linux with the latest gnome 3.28. My built-in laptop monitor is a 4k HiDPI monitor. If I attach a second HiDPI Monitor (I tried 2 different), then the gnome wayland session switches to the new monitor an freezes immediately. The builtin display is off. GDM is also affected if running with the wayland backend.
gnome-shell: Failed to set CRTC mode 3200x1800: Invalid argument gnome-shell: Failed to flip: Device or resource busy gnome-shell: Failed to set CRTC mode 3200x1800: Invalid argument
- built-in monitor resolution: 3200x1800
- external monitor resolution: 3840x2160
Hint: Reference to issue in gnome-shell issue tracker: gnome-shell#153 (closed)