I am on 14.04 and successfully installed the HP-Envy 4500 All-in-one printer.

It worked a treat printing via wireless / scanning etc.

I don't print that often (probably a few pages every 3 weeks) , but when I print now, Ubuntu goes through the print routines , says it's started and finished OK, but HPLIP shows a status of 'Held' because it thinks the printer is not connected to the wifi.

If I reboot my wireless router and reboot the printer it will 'sometimes' work, but more than often it gives me the same error.

If I try to browse to the printers IP address (to get the printer configuration menu), Firefox cannot connect.

If I plug a USB connection from my laptop to the printer, hey presto, the printer works fine.

I am finding this frustrating. I can print to the printer via my HTC smart phone without any issues , but Ubuntu seems very problematic when attempting to print over wifi

I noticed this problem after I had had a power outage, although the issue may have been there before the outage. All my equipment is connected through a circuit breaker

Is there a fix for this? Any tips or advice would be most welcome. I am not a Linux / Ubuntu expert by any means but I can follow step by step guides etc.

Thank you in anticipation of your help

Phil