I have a udev rule to switch some XFCE panels when an external monitor is added.
ACTION=="change", KERNEL=="card0", RUN+="/usr/bin/systemctl start hot_plug.service"
This starts the service hot_plug.service, which in turn runs a script to configure the panels. However my external monitor can be turned on/off, and this will not result in running the service. Is it possible to make udev listen to turning on/off of the external monitor?
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