Rem P Roberti
remegius at comcast.net
Sat Mar 5 22:14:00 UTC 2011
On 2011.03.05 14:40:56 +0000, Warren Block wrote:
> On Sat, 5 Mar 2011, Rem P Roberti wrote:
> >I have a printer, which was installed and is working under CUPS, that seems
> >to go offline of its own accord. And when that happens I have found no
> >other option than to reboot. I know, I know...you should never have to
> >reboot, but that's the only thing that seems to work. When I check out
> >localhost:631 everything looks good, and all the uncompleted jobs are
> >there patiently waiting to get processed. But, as I said, the jobs
> >can't get done without a reboot. When I do reboot, just before the
> >login prompt shows up, the printer jumps into action and all of the
> >uncompleted jobs get processed. I should also point out that
> >immediately after reboot the printer works flawlessly, printing on
> >demand. It is only after being idle for a while that it just seems to
> >go offline, without any warning.
> The model of printer and how it is connected are likely important.
> First guess would be power-save shuts down the printer and it's not
> being woken up again. CUPS has an lpstat program which may be able to
> tell you something useful about the state of the printer.
Thanks for the reply. The printer is an HP Photosmart 9180, connected
to ulpt0, which cannot be toggled online/offline. The printer is
designed to remain on full time, and has maintenance routines that
it goes through every 24 hrs. If you turn it off and then turn it
back on again it goes through a long set of diagnostic routines. I'm
not sure how to avail myself of the lpstat program, but I shall read the
man pages and see what I can come up with.
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