Second monitor login prompt

Support and Help
1

I am trying this latest technical support option for ubuntu - which seems like the latest of many iteration over the years, and by far the most difficult to access; congratulations. Only the most persistent will get through!

I use Ubuntu desktop, version 24.04.2 LTS with an AMD Ryzen CPU, a NVIDIA gpu, Gnome version 46, and kernel Linux 6.14.0-27-generic

A couple of days ago, when I booted the PC, the login prompt was gone! There was just the default Ubuntu purpleish orange background. I found that the prompt had moved to my second monitor, which I do not normally turn on unless needed. I have confirmed that the user-level Settings shows my primary display to be the one intended; a 24-inch Acer Technologies 1920 x 1080 monitor. The secondary, an old Samsung 28" 1366 x 758 TV screen, is normally only used if I am watching a video - but now it is also necessary to turn it on to log in.

I cannot find mention of this ailment online - here or anywhere. I certainly did not intend to move the login prompt to the second screen and I have no idea how to move it back. I do not know what I may have done to cause the move at all. I have tried switching to mirror monitor and back, and switching which monitor is primary and back; but of course these are USER preferences, and the login prompt happens before I am logged in (though I am the only user).

I have disabled login prompt for now; no login required, but of course I still have to login on reboot.

2

I misstated: with login prompt disabled I do NOT have to login on reboot. However, I re-enabled the login prompt after update and upgrade of packages and the login has returned to the primary screen by itself. It has HEALED!

On the first reboot when the prompt returned to the primary screen, the secondary display (which had shown an Ubuntu splash screen during the boot process, remained black until I unplugged and replugged the display cable. That was a bit odd I thought. But anyway, never mind!!!

3

I spoke too soon!! The problem has reoccurred. When I logged into the current session, the prompt was on the primary display. A while later when I awoke the system from having blanked the monitors due to inactivity, the prompt was again displayed on the secondary monitor :frowning: