Dual monitor login screen prob: always on same monitor - Ubuntu 20.04
18377
Is there to make the login screen appear on the external display in 18.04?
95794
How can I automatically switch off internal screen when an external screen is connected?
14659
Turning DisplayPort monitor off disables monitor completely
46973
Cannot change login screen background in 18.10
95157
How do I change login screen theme or background in Ubuntu 20.04?
83237
Login screen resolution
41184
Cursor hitting "border" between differently sized monitors
17315
How to Configure Launcher Placement in Multi-monitor Setup
26700
Ubuntu Detects 2 monitors when I only have one
143090
What's the appropriate Stack Exchange site for asking about setting up dual monitors?
105288
How can I mirror one of the screens in a 3-monitor setup?
97986
How do I setup dual monitors in XFCE?
12380
How to move Unity Launcher to a different monitor?
141757
Is it possible to show a screensaver on a secondary monitor while using the primary monitor?
135029
How to make applications open on the correct monitor when using multiple monitors?
36607
Simulate Multiple Monitors
54667
Ubuntu 18.04: Changing dock location on monitor rotation