Re: [gentoo-user] Re: What is up with the libreoffice ebuild?

[Paul Hartman <paul.hartman+gentoo@gmail.com>]

On Tue, Sep 6, 2011 at 11:45 AM, Michael Mol <mikemol@gmail.com> wrote:
> On Tue, Sep 6, 2011 at 12:28 PM, Paul Hartman
> <paul.hartman+gentoo@gmail.com> wrote:
>> On Tue, Sep 6, 2011 at 11:16 AM, Dale <rdalek1967@gmail.com> wrote:
>>> This is rather odd.  For the longest, every time I had a cups update, I had
>>> to delete my printers then add them back again.  It would not print until I
>>> did so.
>>
>> I have to do that every time I plug my printer in...
>>
>> I print so infrequently, every time I want to print I turn the printer
>> on and plug it into my PC, and then spend 25 minutes trying to make it
>> work with CUPS again.
>
> Paul, I suspect you've got a udev configuration problem. Your printer
> *should* get some kind of persistent symlink pointing to its device
> node, probably derived from its serial number. If that isn't working
> properly, fixing it should fix your recurring CUPS issues. If udev is
> behaving properly, then perhaps CUPS is latching on to something more
> transient.

IIRC the issue in my particular case is related to loading and
unloading the usblp module. I have an HP LaserJet 1020 and use
foo2zjs. Attaching the printer must be done in this order:

modprobe usblp
plug in printer
rmmod usblp

If I plug in then printer without usblp (if I have blacklisted the
module), it won't work. If I plug in the printer and leave usblp
loaded, it won't work. I must load usblp, plug in the printer and then
rmmod usblp. If I add the printer in CUPS when it's in the wrong
state, it won't work either.

Usually I screw around with deleting/adding the printer until I
remember what the solution was in the first place. :)