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

[Tyler]

> 
> On Wed, Aug 1, 2018 at 1:58 PM, Tyler <tylera at privatedemail.net> wrote:
> 
>> > Try setting the QT_SCREEN_SCALE_FACTORS per display like this for
>> instance:
>> > QT_SCREEN_SCALE_FACTORS=eDP-1=2;DP-1=1;HDMI-1=1;DP-2=1;HDMI-2=1;
>>
>> I didn't even know that was possible.
>>
>> I tried with: QT_SCREEN_SCALE_FACTORS=eDP1=2,DP1=1 to test but I am
>> noticing it seems to be truncating to when I look at:
>>
>> env | grep QT_SCREEN_SCALE_FACTOR
>> QT_SCREEN_SCALE_FACTORS=eDP1=2
>>
>> Thanks for the tip though!
>>
> 
> use semicolon ";" not comma "," to separate.

oops i copy pasted the wrong example.

tya99 at host:~ $ export QT_SCREEN_SCALE_FACTORS=eDP1=2;DP1=1
tya99 at host:~ $ env |grep QT_SCREEN_SCALE_FACTOR
QT_SCREEN_SCALE_FACTORS=eDP1=2

seems DP1=1 lost it's setting. I have noticed when using
xf86-intel-video displays are eDP1 and DP1 and when using modesetting
they're eDP-1 and DP-1.

-- 
Tyler