Ranjan Maitra via users composed on 2026-07-02 11:35 (UTC-0500):
> Felix Miata wrote:
>> Simpler choices I suggest to try for mirroring the two:
>>
>> xrandr --output eDP-1 --mode 2560x1440 --pos 0x0 --output HDMI-1 --mode
>> 2560x1440
>> --pos 0x0
>>
>> xrandr --output eDP-1 --mode 2880x1800 --pos 0x0 --output HDMI-1 --mode
>> 3840x2160
>> --scale-from 2880x1800
>>
>> xrandr --output eDP-1 --mode 2880x1800 --pos 0x0 --output HDMI-1 --mode
>> 3840x2160
>> --scale .75x.75
>>
>> xrandr --output eDP-1 --mode 2880x1800 --pos 0x0 --output HDMI-1 --mode
>> 3840x2160
>> --scale 1.333x1.333
>>
>> I always forget which direction scaling works, so one of the last two will be
>> clearly wrong. Also you'll likely find it desirable or necessary to adjust
>> the
>> scale value for vertical to account for the difference in the two displays
>> native
>> aspect ratios. Later I may find time to try to emulate using 16:9 2560x1440
>> with
>> 16:10 1920x1200 displays if you haven't solved to your satisfaction.
>>
>
> I now can not recall about the first one, but the second and third do the
> same thing. Which likely makes sense. However, both screens are completely
> filled (how is this possible?) and what is really bad about the HDMI-1 screen
> is that it does not display new windows or the mouse cursor or even when you
> write on an existing terminal then the script gets messed up (I do not quite
> know how to explain this) to be unreadable. The eDP-1 screen looks fine to me.
> So, I am missing something.
Or perhaps I was, missed by not testing here first. First, see if it makes any
difference using DP-whichever output and a DisplayPort cable if you can. I'm
thinking you may need an X configuration option in /etc/X11/xorg.conf.g/ having
to
do with display mirroring. I'll have to revisit this after a while....
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata
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