Printer Offline

Warren Block wblock at
Sat Mar 5 23:29:03 UTC 2011

On Sat, 5 Mar 2011, Rem P Roberti wrote:

> 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.

You might be able to wake it up with something like
   true > /dev/unlpt0

Or maybe use usbconfig to wake it up, in various ways.  Some might make 
it do the ink-wasting powerup, though.
   usbconfig -d ugen1.2 resume
   usbconfig -d ugen1.2 power_on
   usbconfig -d ugen1.2 reset

Don't know if that would work with the unlpt device directly.

HP says that printer is not supported with HPLIP, but not why.

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