gdm3をクビにしてsddmにしたらなおったよｗｗｗ


$ env | grep x11
XDG_CONFIG_DIRS=/home/===/.config/kdedefaults:/etc/xdg/xdg-plasmax11:/etc/xdg
DESKTOP_SESSION=plasmax11
XDG_SESSION_TYPE=x11
XDG_DATA_DIRS=/usr/share/plasmax11:/usr/share/gnome:/home/===/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share:/var/lib/snapd/desktop