Novell LINUX ENTERPRISE SERVER 11 - ADMINISTRATION Administration Manual page 139

If the printer cannot be addressed on the parallel port despite these settings, enter the
I/O address explicitly in accordance with the setting in the BIOS in the form 0x378
in /etc/modprobe.conf. If there are two parallel ports that are set to the I/O ad-
dresses 378 and 278 (hexadecimal), enter these in the form 0x378,0x278.
If interrupt 7 is free, it can be activated with the entry shown in
modprobe.conf: Interrupt Mode for the First Parallel Port"
vating the interrupt mode, check the file /proc/interrupts to see which interrupts
are already in use. Only the interrupts currently being used are displayed. This may
change depending on which hardware components are active. The interrupt for the
parallel port must not be used by any other device. If you are not sure, use the polling
mode with irq=none.
Example 10.1 /etc/modprobe.conf: Interrupt Mode for the First Parallel Port
alias parport_lowlevel parport_pc
options parport_pc io=0x378 irq=7
10.8.4 Network Printer Connections
Identifying Network Problems
Connect the printer directly to the computer. For test purposes, configure the
printer as a local printer. If this works, the problems are related to the network.
Checking the TCP/IP Network
The TCP/IP network and name resolution must be functional.
Checking a Remote lpd
Use the following command to test if a TCP connection can be established to lpd
(port 515) on host:
netcat -z host 515 && echo ok || echo failed
If the connection to lpd cannot be established, lpd may not be active or there
may be basic network problems.
As the user root, use the following command to query a (possibly very long)
status report for queue on remote host, provided the respective lpd is active
and the host accepts queries:
Example 10.1, "/etc/
(page 125). Before acti-
Printer Operation 125