How to: Disable Monitor Detection

[clint3142]

Platform:
Dell Precision 7760, A4000.
Mint 22.3, Nvidia 580 Drivers from Mint "Driver Manager"

AUO UHD internal display, 55" Visio 4k via HDMI.

Mirroring displays, working perfect when set. But once out of 3 to 5 times when connecting back to home desk, the set 4k desktop environment: Interface scale = 100, will change to 200, and mirroring will be off.

There is no item in Startup Applications, "Cinnamon Settings Daemon - xrandr" to turn OFF.
And the googled gsettings key set, returns "active" being not a valid key.
gsettings set org.cinnamon.settings-daemon.plugins.xrandr active false

My thinking is once set, there should be a .conf file that I can set to read only, and be done.

Anyone's time will be much appreciated.

[Jopp-gh]

"How to" sounds like instructions, but in truth you're looking for a solution.

Anyway, you can command xrandr via terminal. I'd like to help you, but I don't have second screens.

Check out for solutions online: https://askubuntu.com/questions/366813/disable-second-non-existent-screen-from-command-line

To make sure your script works, execute it from your terminal first otherwise you need another approach. Find more info under man xrandr (terminal).

Example

1. Just create a text file, open it
2. add on top #!/bin/bash
3. Add 3 empty lines
4. Add your code, eg xrandr --auto
5. Save it with some meaningful name, eg. restore-main-screen.sh
6. Put it somewhere and copy this path to clipboard
7. Open this file's info window and check it off to make it executable
8. Create a new entry under settings, starter items and add the path of your script