lp0 в /dev — это симлинк на реальное устройство в /dev/usbdev
У меня та же проблема (Не печатает HP1020). Если Вы отвечаете, то уж ответьте до конца. От того что я компу сказал: "Это симлинк", он все равно печатать не стал, почему-то. Конкретнее надо, что именно сделать, как устранить проблему,какую команду я должен задать для работы девайса? Мы ведь тут 90% чайники, и не от хорошей жизни взялись за всю ету .... Короче, нельзя ли разжевать? А то у меня тоже пишет:
root@WS1508 ~]# cat /usr/share/foo2zjs/firmware/sihp1020.dl > /dev/usb/lp0
cat: /usr/share/foo2zjs/firmware/sihp1020.dl: No such file or directory

При включении принтера появляется след.сообщение:
HP LaserJet 1020
Required a proprietary plagin hp-setup
При запуске
[root@WS1508 firmware]# hp-setup -i
HP Linux Imaging and Printing System (ver. 3.9.12)
Printer/Fax Setup Utility ver. 9.0
Copyright (c) 2001-9 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
(Note: Defaults for each question are maked with a '*'. Press <enter> to accept the default.)
--------------------------------
| SELECT CONNECTION (I/O) TYPE |
--------------------------------
Num Connection Description
Type
-------- ---------- ----------------------------------------------------------
0* usb Universal Serial Bus (USB)
1 net Network/Ethernet/Wireless (direct connection or JetDirect)
Enter number 0...1 for connection type (q=quit, enter=usb*) ? 0
Using connection type: usb
Using device: hp:/usb/HP_LaserJet_1020?serial=JL0DF7L
Setting up device: hp:/usb/HP_LaserJet_1020?serial=JL0DF7L
------------------------
| PLUG-IN INSTALLATION |
------------------------
HP Linux Imaging and Printing System (ver. 3.9.12)
Plugin Download and Install Utility ver. 2.1
Copyright (c) 2001-9 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
(Note: Defaults for each question are maked with a '*'. Press <enter> to accept the default.)
Traceback (most recent call last):
File "/usr/bin/hp-plugin", line 268, in <module>
from installer import core_install
ImportError: No module named installer
---------------------
| PRINT QUEUE SETUP |
---------------------
Please enter a name for this print queue (m=use model name:'HP_LaserJet_1020'*, q=quit) ?m
Using queue name: HP_LaserJet_1020
Locating PPD file... Please wait.
Found PPD file: drv:///hp/hpijs.drv/hp-laserjet_1020-hpijs.ppd
Enter a location description for this printer (q=quit) ?
Enter additonal information or notes for this printer (q=quit) ?
Adding print queue to CUPS:
Device URI: hp:/usb/HP_LaserJet_1020?serial=JL0DF7L
Queue name: HP_LaserJet_1020
PPD file: drv:///hp/hpijs.drv/hp-laserjet_1020-hpijs.ppd
Location:
Information:
---------------------
| PRINTER TEST PAGE |
---------------------
Would you like to print a test page (y=yes*, n=no, q=quit) ? y
warning: hp-testpage should not be run as root/superuser.
HP Linux Imaging and Printing System (ver. 3.9.12)
Testpage Print Utility ver. 6.0
Copyright (c) 2001-9 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
error: Install the hplip-gui package for graphical support.
warning: Qt/PyQt 4 initialization failed.
error: hp-testpage -u/--gui requires Qt4 GUI support. Entering interactive mode.
Printing test page to printer HP_LaserJet_1020...
Test page has been sent to printer.
note: If an error occured, or the test page failed to print, refer to the HPLIP website
note: at:
http://hplip.sourceforge.net for troubleshooting and support.
Done.
Done.
[root@WS1508 firmware]#