[cups.general] SOLVED: printer switch not working with cups [was:

[Helge Blischke]

ekkard gerlach wrote:
> 
> ekkard gerlach wrote:
> 
> > I updated to 1.1.22 but no success: the printer HP laser III even stopps
> > in the middle of a job, even in the middle of a sheed of paper and
> > requeues. It's worse that before. I downgraded to 1.1.8.  immedeately. I
> > give back Digitus DN-11002 to the seller. It's not working with CUPS.
> 
> A hint in NG de.comp....linux was wonderful: timeout! CUPS has
> a KeepAliveTimeout  in /etc/cups/cupsd.conf  , default 60sec.
> The digitus DN-11002  seems not to send signals "I'm printing .."
> to the PC so that every minute the job is requeued. I increased
> to 500sec a two tests with 20 pages were successfull so far.
> 
> Perhaps some specialists here can explain this phanomen.
> 
> ekkard

Well, things like this were the main reason we turned the old, old hpnpf
utility by Sun
(was free in the early ninetees) to a CUPS backend that waits for the
jobs to complete
(by appropriate PJL statements, thus this backend requires the printer
to support 
PJL).

There are printers that support (anonymous) ftp (e.g. the more recent HP
printers), and AFAIK,
the ftp session is held open until the job has completed (or aborted).

Both may be a workaround to your timeout issues.

Helge

-- 
Helge Blischke
Softwareentwicklung
SRZ Berlin | Firmengruppe besscom
http://www.srz.de
tel: +49 30 75301-360