Change your secondary screen resolution to 1440p during login.
Change your secondary screen resolution to 1440p during login.
Explore instructions on adjusting screen resolution in Linux.
The issue is that xrandr doesn't recognize a 1440p display even though it isn't being set manually in NVIDIA settings, and this setting isn't being saved.
Use the appropriate command to specify the desired display mode. Set the refresh rate to 55 Hz as recommended. Refer to the Ubuntu handbook for further guidance on custom screen resolution settings.