Since the last update from yesterday, when I connect my laptop (with Manjaro KDE) to an external screen, said screen starts flickering as if it was vertically shaking. If I disconnect the screen, the screen of the laptop turns black and there is no way to return to normal (without a forced shutdown and reboot). If I reconnect the screen, it is recognized but just displays a black screen. Without the external screen, the screen of the laptop is doing fine. I have the setting that if an external screen is connected, the one of the laptop should be turned off.
Things that I’ve tested so far:
- Connecting the screen via another HDMI cable to the laptop → same behaviour.
- Connecting the same screen to ANOTHER Manjaro KDE laptop (with the same or another HDMI-cable) → everything is fine.
- Connecting a DIFFERENT screen to the laptop (again with the same or another HDMI-cable) → everything is fine.
- Changing the compositor settings (rendering backend and vsync) → no effect.
I don’t even know what other data to provide so if you have any idea, please ask away!