nick@nick:~$ sudo /etc/init.d/cupsys restart
 * Restarting Common Unix Printing System: cupsd                            [ OK ]
nick@nick:~$ sudo lsmod | egrep 'lp|par|ppdev'
ppdev                  10116  0
lp                     12452  2
parport_pc             36388  1
parport                36936  3 ppdev,lp,parport_pc
nick@nick:~$ sudo cat /proc/sys/dev/parport/parport*/autoprobe*
CLASS:PRINTER;
MODEL:DESKJET 710C;
MANUFACTURER:HEWLETT-PACKARD;
DESCRIPTION:Hewlett-Packard DeskJet 710 Series;
COMMAND SET:SCP,VLINK;
nick@nick:~$ sudo rmmod lp
ERROR: Module lp is in use
nick@nick:~$ sudo rmmod ppdev
nick@nick:~$ sudo rmmod parport_pc
ERROR: Module parport_pc is in use
nick@nick:~$ sudo rmmod parport
ERROR: Module parport is in use by lp,parport_pc
nick@nick:~$ sudo modprobe lp
nick@nick:~$ sudo modprobe ppdev
nick@nick:~$ sudo cat /proc/sys/dev/parport/parport*/autoprobe*
CLASS:PRINTER;
MODEL:DESKJET 710C;
MANUFACTURER:HEWLETT-PACKARD;
DESCRIPTION:Hewlett-Packard DeskJet 710 Series;
COMMAND SET:SCP,VLINK;
nick@nick:~$