lsmod | grep usblp
usblp                  12636  0

ls -l /dev/usb/lp* /dev/bus/usb/*/*
ls: impossibile accedere a /dev/usb/lp*: Nessun file o directory
crw-rw-r--  1 root vboxusers 189,   0 2009-10-30 17:18 /dev/bus/usb/001/001
crw-rw-r--  1 root vboxusers 189,   1 2009-10-30 17:18 /dev/bus/usb/001/002
crw-rw-r--  1 root vboxusers 189,   2 2009-10-30 17:18 /dev/bus/usb/001/003
crw-rw-r--  1 root vboxusers 189, 128 2009-10-30 17:18 /dev/bus/usb/002/001
crw-rw----+ 1 lp   lp        189, 143 2009-10-30 19:09 /dev/bus/usb/002/016
crw-rw-r--  1 root vboxusers 189, 256 2009-10-30 17:18 /dev/bus/usb/003/001
crw-rw-r--  1 root vboxusers 189, 384 2009-10-30 17:18 /dev/bus/usb/004/001
crw-rw-r--  1 root vboxusers 189, 512 2009-10-30 17:18 /dev/bus/usb/005/001
crw-rw-r--  1 root vboxusers 189, 513 2009-10-30 17:18 /dev/bus/usb/005/002
crw-rw-r--  1 root vboxusers 189, 640 2009-10-30 17:18 /dev/bus/usb/006/001
crw-rw-r--  1 root vboxusers 189, 768 2009-10-30 17:18 /dev/bus/usb/007/001

sudo /usr/lib/cups/backend/usb
DEBUG: list_devices_libusb
DEBUG: usb_find_busses=7
DEBUG: usb_find_devices=11


sudo /usr/lib/cups/backend/hp
direct hp:/usb/HP_LaserJet_1018?serial=KP18X7R "HP LaserJet 1018" "HP LaserJet 1018 USB KP18X7R HPLIP" "MFG:Hewlett-Packard;MDL:HP LaserJet 1018;CLS:PRINTER;DES:HP LaserJet 1018;SN:KP18X7R;"

lpinfo -l -v
Dispositivo: uri = http
        classe = network
        info = IPP (Internet Printing Protocol) (http)
        make-and-model = Unknown
        device-id = 
        posizione = 
Dispositivo: uri = psproc_backend:/
        classe = file
        info = GtkPSproc backend
        make-and-model = GtkPSproc
        device-id = 
        posizione = 
Dispositivo: uri = socket
        classe = network
        info = AppSocket/HP JetDirect
        make-and-model = Unknown
        device-id = 
        posizione = 
Dispositivo: uri = lpd
        classe = network
        info = Host o stampante LPD/LPR
        make-and-model = Unknown
        device-id = 
        posizione = 
Dispositivo: uri = smb
        classe = network
        info = Windows Printer via SAMBA
        make-and-model = Unknown
        device-id = 
        posizione = 
Dispositivo: uri = scsi
        classe = direct
        info = Stampante SCSI
        make-and-model = Unknown
        device-id = 
        posizione = 
Dispositivo: uri = beh
        classe = network
        info = Backend Error Handler
        make-and-model = Unknown
        device-id = 
        posizione = 
Dispositivo: uri = ipp
        classe = network
        info = IPP (Internet Printing Protocol) (ipp)
        make-and-model = Unknown
        device-id = 
        posizione = 
Dispositivo: uri = hp:/usb/HP_LaserJet_1018?serial=KP18X7R
        classe = direct
        info = HP LaserJet 1018 USB KP18X7R HPLIP
        make-and-model = HP LaserJet 1018
        device-id = MFG:Hewlett-Packard;MDL:HP LaserJet 1018;CLS:PRINTER;DES:HP LaserJet 1018;SN:KP18X7R;
        posizione = 
Dispositivo: uri = hpfax
        classe = direct
        info = HP Fax (HPLIP)
        make-and-model = Unknown
        device-id = 
        posizione = 


lpstat -v
dispositivo per Hewlett-Packard-HP-LaserJet-1018: hp:/usb/HP_LaserJet_1018?serial=KP18X7R


lpstat -p
la stampante Hewlett-Packard-HP-LaserJet-1018 è in attesa.  Abilitata da ven 30 ott 2009 18:44:34 CET


sudo gedit /etc/cups/printers.conf
# Printer configuration file for CUPS v1.4.1
# Written by cupsd on 2009-10-30 18:45
<DefaultPrinter Hewlett-Packard-HP-LaserJet-1018>
Info Hewlett-Packard HP LaserJet 1018
Location alessio-laptop
MakeModel HP LaserJet 1018 Foomatic/foo2zjs (recommended)
DeviceURI hp:/usb/HP_LaserJet_1018?serial=KP18X7R
State Idle
StateTime 1256924674
Type 8425476
Filter application/vnd.cups-raw 0 -
Filter application/vnd.cups-postscript 100 foomatic-rip
Filter application/vnd.cups-pdf 0 foomatic-rip
Filter application/vnd.apple-pdf 25 foomatic-rip
Filter application/vnd.cups-command 0 commandtops
Accepting Yes
Shared Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
OpPolicy default
ErrorPolicy retry-job
</Printer>


lsusb
Bus 005 Device 002: ID 045e:00cb Microsoft Corp. 
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 07ca:a310 AVerMedia Technologies, Inc. 
Bus 001 Device 002: ID 064e:a101 Suyin Corp. Acer CrystalEye Webcam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 016: ID 03f0:4117 Hewlett-Packard Printing Support
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub