I went to the trouble of making an external power button for my Odroid XU4
and then found out that out of the box DietPi
completely ignores this button being pressed. Luckily there is a way to make the OS
shut down after the power button is pressed.
Here's what I did to check if the power button presses do anything. I needed to install evtest
After it was installed, I ran it and got the following output:
Selecting '0' gave me this...
...and when I triggered the power button, a bunch of events were fired, so I was on the right track!
I came across this forum post
that gave me some good leads, but it wasn't for an XU4
, so using the default systemd power switch rules
I came up with something that should work on the XU4
The above was saved to /etc/udev/rules.d/70-power-switch-odroidxu4.rules
and then I ran the following commands to reload the rules...
Then as soon as I triggered the power button, my XU4
started shutting down. Neat!
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