$ lsmod | grep lp
lp                     11908  0 
parport                40528  3 lp,ppdev,parport_pc

$ lsmod | grep ppdev
ppdev                   8232  2 
parport                40528  3 lp,ppdev,parport_pc

$ dmesg   | grep par
[    0.280434] Booting paravirtualized kernel on bare hardware
[    0.312836] pci 0000:00:14.4: transparent bridge
[    0.360626] hpet0: 4 comparators, 32-bit 14.318180 MHz counter
[    0.736934] ahci 0000:00:11.0: flags: 64bit ncq sntf ilck pm led clo pmp pio slum part 
[    3.070613] PM: Resume from partition 8:5
[   18.162241] parport_pc 00:06: reported by Plug and Play ACPI
[   18.162298] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
[   18.235062]     Either Enable ECC in the BIOS, or use the 'ecc_enable_override' parameter.
[   18.263826] ppdev: user-space parallel port driver
[   18.301273] parport0: Printer, Hewlett-Packard HP LaserJet 5L
[   18.301524] lp0: using parport0 (interrupt-driven).
[   32.208267] vboxdrv:   echo 2 > /proc/sys/kernel/perf_counter_paranoid
[   32.480181] parport0: no more devices allowed

$ lpinfo -v
direct scsi
file cups-pdf:/
network smb
network http
network beh
serial serial:/dev/ttyS0?baud=115200
network ipp
network lpd
network socket