ydotoold could not be started after the installation on Ubuntu 22.04: Here's the fix:

[klausbu]

ydotoold could not be started after the installation on Ubuntu 22.04: Here's the fix:

sudo systemctl enable ydotool.service
Failed to enable unit: Unit file ydotool.service does not exist.

I searched in "/usr/lib/systemd/system" for the ydotool.service file but nothing is there.
The file is located at "/usr/local/lib/systemd/user/ydotool" - this is not documented

The fix is to create a symbolic link:

How to create a symbolic link for the file /usr/local/lib/systemd/user/ydotool.service to the directory /usr/lib/systemd/system ?

sudo ln -s /usr/local/lib/systemd/user/ydotool.service /usr/lib/systemd/system/

Now the service starts ok.