Encontrei sua solução no Wiki do Arch :
Out of the box,
systemd-logind
will catch power key and lid switch events and handle them: it will shut down the Chromebook on a power key press, and a suspend on a lid close. However, this policy might be a bit harsh given that the power key is an ordinary key at the top right of the keyboard that might be pressed accidentally.To configure
logind
to ignore power key presses and lid switches, add the lines tologind.conf
below.
/etc/systemd/logind.conf
HandlePowerKey=ignore HandleLidSwitch=ignore
Then restart
logind
for the changes to take effect.
Parece que você precisa adicionar HandlePowerKey=ignore
a /etc/systemd/logind.conf
.