@jackalpret Well, I don't understand enough to identify where the error is, so I need to check from the beginning:
at the link:
https://github.com/recalbox/recalbox-os/wiki/Change-display-resolution-on-x86---x86_64
The initial statement says:
Xrandr can be used to set the size, orientation or reflection of the outputs for a screen. A common use scenario would be to use a specific resolution less than the displays maximum resolution. For example a 1080p resolution on a 4K display, or a 720p resolution on a 1080p display.
- ssh into your recalbox: root terminal access
Once connected perform the following:
cp /etc/X11/xinit/xinitrc ~/.xinitrc
This will copy ~/.xinitrc to /recalbox/share/system (/recalbox/share/system/.xinitrc). This will be the file that we will edit.
From here you can edit the file with vi/nano from ssh with your existing connection, or use winscp/filezilla to edit /recalbox/share/system/.xinitrc
add this to /recalbox/share/system/.xinitrc (1080p as an example)
xrandr -s 1920x1080
Did you do this initial procedure?
Have you tried adding your configuration manually to the .xinitrc file?
Sorry not to be more precise, I am not a developer, I'm just trying to help.