Today I by accident found that classic Xorg will work on Reform with the following xorg.conf
—with the caveat that there’s no GPU acceleration (instead, GLX uses llvmpipe for unknown reasons). It is snappy for many applications that don’t strictly require GPU rendering, though:
Section "Device"
Identifier "eDP-1"
Driver "modesetting"
Option "kmsdev" "/dev/dri/card0"
Option "AccelMethod" "glamor"
Option "Atomic" "On"
EndSection