I can get the same effect on Fedora when going from work to home. If I print on the work printer at work, I sometimes can't print on the home one when I get back.

Your mentioning it reminded me that, In previous lives, echo "" | lpr && lprm would unstick things. I wonder if that's still true...

--dave

On 27/05/16 11:44 AM, Stephen wrote:

I am using Ubuntu 14.04
Printer is Epson WF-2630
Wi-fi connection. Hard coded IP address

When I try to print, I get a Gnome pop-up saying printer is off-line. Using the web interface to CUPS the reported error is printer not found.

I can always ping the printer.
I can always print from a windows computer on the same network.

I can, from the CUPS web interface "modify" the printer settings. I click through without changing anything.

When I am finished, the stalled print job is printed.

Any ideas how I can print without "modifying" the printer settings?

-- 
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
davecb@spamcop.net           |                      -- Mark Twain