I have a 5k monitor (LG Ultrafine 5k) that seems to require Xinerama in order to work well in KDE Plasma.
How do I enable Xinerama when using Clear Linux? More generally how do you edit X configuration?
probably similar to other distros, except config files may be missing or in subdirectories of /usr/share/ see https://docs.01.org/clearlinux/latest/reference/manpages/stateless.7.html
you may add config files to the appropriate place (over here i beleive to /etc/X11/xorg.conf.d/ - that is where a keyboard.conf file was added when i changed the x11 keymap with localectl)