Error loading multi-monitors extension
I've tried installing the extension by running sudo apt install gnome-shell-extension-multi-monitors, reloading the shell, then enabling it via gnome-tweaks. However the enable button is greyed out and it says "Error loading extension". I also tried installing it following the instructions on git https://github.com/spin83/multi-monitors-add-on but the results are the same.
The error seems to be "JS ERROR: Extension multi-monitors-add-on@spin83: TypeError: this._onButtonPress is undefined".
I am running Ubuntu 20.04.2 LTS with gnome version 3.36.7
I've figured it out. The version of the extension I got from app install was for the wrong gnome version and so was the master branch of the git repo. I got it working by running gnome-shell --version, checking out the corresponding branch on the git repo and installing that.
If you installed the extension by "sudo sudo apt-get install gnome-shell-extension-multi-monitors gnome-tweaks" I recommend:
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Delete the file multi-monitors-add-on.pot from this location: ~/.local/share/gnome-shell/extensions
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Install it through the git repository https://github.com/spin83/multi-monitors-add-on important select the branch according to your gnome version
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Restart the gnome shell "killall -3 gnome-shell"