Acer Nitro 5 power button broken in Ubuntu 20.04

After an BIOS update, the Acer Nitro 5’s power button doesn’t work any more under Ubuntu 20.04. The smart folks at Mint figured out [1] what’s wrong, but I couldn’t get their solution working and I’ve long given up on opening launchpad bugs just to watch them triage. Also I love a good workaround, so here it is!

First – and to my good luck – every time the power button is pressed, syslog will print this message:

Unknown key pressed (translated set 2, code 0x55 on isa0060/serio0)

So the action plan is to write a script which tails syslog, greps for the exact message and run a suspend or shutdown command. The script should be started when the user logs on.

The script is on github [2]. For convenience I registered it with the “Startup Application” Gnome desktop app which runs the script after the user logs into the desktop environment.

Shutdown icons created by lakonicon – Flaticon

References

[1] Power button does not work after BIOS update (acer nitro 5)
https://forums.linuxmint.com/viewtopic.php?t=373800

[2] acer nitro 5 power button workaround script
https://github.com/ggeorgovassilis/linuxscripts/blob/master/powersave/acer-nitro5-powerbutton-workaround.sh

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