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

Bruno Pagani bruno.n.pagani at gmail.com
Wed Aug 1 12:33:21 UTC 2018

Le 01/08/2018 à 14:27, Tyler a écrit :

>> 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).

OK, then maybe you’ve just stumbled upon one of the numerous HiDPI Qt bugs…

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