I can confirm this behavior but please also attach your /etc/X11/xorg.conf and /var/log/Xorg.0.log. After login the resolution could be set through screen resolution which is restored every session.
I can confirm this behavior but please also attach your /etc/X11/xorg.conf and /var/log/ Xorg.0. log. After login the resolution could be set through screen resolution which is restored every session.