Daniel: Thanks for linking to https://bugs.launchpad.net/bugs/2060268. Solved my "ghost monitor" problem; I will report my experience on that bug.
Relative to the screen resolution - when I added the boot flag mentioned there to /etc/default/grub, rebooted and logged into an X (not Wayland) session, my screen was back to 3840 x 1080. However, when I went into Settings and changed the resolution to 5120 X 1440, this time the screen blanked briefly, then returned in the higher resolution and asked if I wanted to keep the setting. I selected "yes" and I continue to have the desired resolution as long I as I am using X. However, logging into a Wayland session, my screen resolution is back to 3840 X 1080, and I still cannot run the Settings to try to change the resolution (the Settings icon appears briefly in the dock, then vanishes, and no apport is offered). Another observation: looking at the GNOME login screen, I'm pretty sure it's in 3840 X 1080 mode as well (or at least, not in the higher resolution supported by this monitor), as the info on the screen appears larger than I recall it from April in 23.10. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2065791 Title: incorrect screen resolution in wayland session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-535/+bug/2065791/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
