HP LaserJet troubleshooting

[Matt Graham]

From: Trent Shipley <tshipley at deru.com>
> I have an HP LaserJet.

Model#?  They only made about 300 different models of those things.
It's probably not important here, but may be later.

> The three Macs find it and print to it, when I boot my Mac into
> windows it prints fine. Unfortunately the Ubuntu 9.04.x box can't
> find it.  If I bring up the browser based manager for CUPS, I can't
> find anything.  I give it the IP address for the [printer], still
> nothing.  I try the HP Linux printer utility and have no luck.

In Gentoo, if I didn't have the snmp USE flag defined, the hplip
utilities couldn't see or print to any networked HP printers.  This
shouldn't be a problem under Debian-derived things though. Also, make
sure there aren't any overly-restrictive firewall rules in place like
a default DROP without a corresponding ACCEPT for whatever port this
is using.  That'd cause the problems you describe.

> What I'd like is a systematic diagnostic plan to start
> troubleshooting

Make sure you can ping the printer from the Ubuntu box first.  Then
see if you can "telnet $PRINTER_IP 631" and get a connection (if
this thing does IPP), or use whatever port the thing uses.

-- 
Matt G / Dances With Crows
The Crow202 Blog:  http://crow202.org/wordpress/
There is no Darkness in Eternity/But only Light too dim for us to see