I want to give a presentation and type on my laptop knowing the projector shows exactly what I see. Here is the abbreviated xrandr output:
~$ xrandr Screen 0: minimum 8 x 8, current 2560 x 1440, maximum 16384 x 16384 eDP-1-1 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 310mm x 170mm 2560x1440 60.00*+ 48.00 1920x1440 60.00 1856x1392 60.01 1792x1344 60.01 1600x1200 60.00 1400x1050 59.98 1280x1024 60.02 1280x960 60.00 1024x768 60.04 60.00 HDMI-1-2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm 1920x1080 60.00*+ 50.00 59.94 1920x1080i 60.00 50.00 59.94 1280x1024 75.02 60.02 1152x864 75.00
Running Xorg server 1.19 with xrandr program version 1.5.0, I simply want to mirror the output of my laptop screen (eDP-1-1) onto the external projector (HDMI-1-2). How do I best do that considering there is no matching screen resolutions?
Btw the transform/scale options mentioned here https://dgl.cx/2014/08/xrandr-tips seem to have no impact whatsoever on the external screen HDMI-1-2, but they did for eDP-1-1.