Anzeige und Monitor - Einstellung setzt sich immer wieder zurück

[megavolt]

@bonsaY

I have these GPU-Packets installed:
video-hybrid-intel-nvidia-390-xx-bumblebee

Ich verlink das mal hier, da du bumblebee verwendest:

Stuttering and Laggy monitor on "External Only" mode

Since you have a hybrid card I would assume you use the bumblebee config? As I remember correctly, on hybrid cards the nvidia card is hard wired to the external output. Intel is used for the laptop screen. So, to use the second screen, it is needed to use the nvidia card as a sink of the primary (intel) and loop the signal through it. Bumblebee is in that case a big hack, since Nvidia does not support it. It uses VirtualGL: In short: VirtualGL redirects an application’s OpenGL/GLX commands …

Wenn du NUR die Nvidia GPU verwendest, sollte es keine Probleme geben.