[arch-general] xrandr with XPS 13" (3840x2160) HiDPI and 30" (2560x1600) LowDPI

Tyler tylera at privatedemail.net
Wed Aug 1 12:27:37 UTC 2018

> The separator is a ; not a comma. ;) And it is likely {E,}DP-1, not
> {E,}DP1. And you probably have to use quotes around the whole value,
> like this:
> QT_SCREEN_SCALE_FACTORS="eDP-1=2;DP-1=1;HDMI-1=1;DP-2=1;HDMI-2=1;"

Hmm sadly, it doesn't seem to help.

$ env |grep QT

I rebooted and set:

xrandr --output eDP1 --pos 5120x0 --auto \
       --output DP1 --pos 0x0 --auto --scale 2x2

and applications Qt apps like wireshark and virtualbox are still
rendering with 2x scaling on both screens. (which looks normal on the
hidpi one, and small on the lowdpi one).


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