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

[Bruno Pagani]

Le 01/08/2018 à 14:11, Tyler a écrit :

>> 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.

Try quoting then. ;)

> I have noticed when using
> xf86-intel-video displays are eDP1 and DP1 and when using modesetting
> they're eDP-1 and DP-1.

Ah that might be correct.