Thanks. It looks like Xorg is the cause of this problem and Wayland (used on the login screen) works better. Please try selecting 'Ubuntu on Wayland' on the login screen (button at the bottom right) before entering your password and tell us if that improves the situation.
** Summary changed: - dual monitor display not working after login + [GM965] dual monitor display not working after login -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1889295 Title: [GM965] dual monitor display not working after login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1889295/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs