Is it the IBM or the LG monitor that remains black? I can't see any hints of a problem in the log. It sounds like maybe GNOME can't uniquely identify one of the monitors and so can't remember its preferred setting.
** Also affects: mutter (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1964542 Title: [nvidia] One monitor remains black on startup or resume from sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1964542/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs