Hello and thanks for checking out my problem.
I have a Lenovo ThinkPad P50 with a 4k (hidpi) display. The dpi settings are all properly set and my laptop screen is crisp and all is well. When connecting to an external monitor without hidpi things are logically quite large. To counteract this I’m applying --scale 2x2 in the xrandr initialization process.
These are the steps I take:
this will turn on the nvidia card and make the display ports available as VIRTUAL devices for randr
$ xrandr --output VIRTUAL# --auto --scale 2x2 --right-of eDP1
this will only show the top right quarter of the virtual screen on the monitor, when applying --panning I can theoretically move over the whole window, but only top left is quarter is shown on the monitor.
$ xrandr -d :8 --output DP-# --auto --scale 2x2
Also tried manually setting --fb with no success.
Thanks for your help.
nvidia bug report log: