[ubuntu] HP Deskjet 2050 J500 all in one Ubuntu 12.04

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http://ubuntuforums.org – Upgraded Ubuntu 11.10 to 12.04 & printer/scanner not working, in System Settings/Printers/Print test page it just stays in queue, under Options there are no Allowed Users. Simple Scan says Unable to start scan, Xsane ditto plus Error during device I/O. Google has a hundred different solutions for every hundred different contributors, most out of date, tried reinstalling hplip. Probably very simple but I can't find it, someone out there must know! (Hardware)