Hopefully devs might correct me if wrong, you may want to edit the
KEY_POWER 1 /sbin/shutdown -h now
acpi event in:
/etc/triggerhappy/triggers.d/multimedia_keys.conf
This is the contents of the file:
KEY_VOLUMEUP 2 /usr/bin/amixer set Master 5%+
KEY_VOLUMEDOWN 1 /usr/bin/amixer set Master 5%-
KEY_VOLUMEDOWN 2 /usr/bin/amixer set Master 5%-
KEY_MUTE 1 /usr/bin/amixer sset Master toggle
KEY_POWER 1 /sbin/shutdown -h now
# display some information on X displays
KEY_F2 1 /usr/bin/batocera-info --short | HOME=/userdata/system DISPLAY=:0.0 osd_cat -f -*-*-bold-*-*-*-38-120-*-*-*-*-*-* -cred -s 3 -d 4```
(backing up multimedia_keys.conf )
https://wiki.batocera.org/doku.php?id=modify_the_system_while_it_s_running