Just for future reference, only a one line change is required for xubuntu-artwork so that it can accept more than 2 parameters when updating the status of plymouth (just an args == 2 vs args >= 2 change).
Just for future reference, only a one line change is required for xubuntu-artwork so that it can accept more than 2 parameters when updating the status of plymouth (just an args == 2 vs args >= 2 change).