Funcion keys Logitech K380 in Ubuntu
Install k380_conf from https://github.com/jergusg/k380-function-keys-conf
sudo nano /etc/udev/rules.d/99-k380.rules
KERNEL=="hidraw*", ACTION=="add", SUBSYSTEM=="hidraw", RUN+="/sbin/k380_conf -d /dev/%k -f on"
KERNEL=="hidraw*", ACTION=="add", SUBSYSTEM=="hidraw", RUN+="/sbin/k380_conf -d /dev/%k -f on"