I run my computer on Ubuntu 14.05 LTS and have recently connected a new HP Color LaserJet MFP-M277dw. The connection is local via USB.
At the point of first usage, the system did recognize the device somehow so that I could print, but I cannot scan documents yet. Full scanning functionalities are the aim.
From https://help.ubuntu.com/community/HpAllInOne I learn that
You have selected Ubuntu 14.04 using the HP Color LaserJet MFP m277dw. Ubuntu 14.04 supplies HPLIP 3.11.5 by default, which does not support your printer. You must ensure latest HPLIP version (recommemded), or at least HPLIP 3.15.4 in order to use your printer with Ubuntu 14.04.
Checking on http://packages.ubuntu.com/search?keywords=HPLIP&searchon=names&suite=trusty§ion=all shows that, to date, Ubuntu 14.04 covers up to HPLIP 3.14.3 only.
The question is: what is the fail-safe strategy (i.e. the sequence of commands) that I should follow to get this all-in-one printer to scan?
I have run
hp-check -r whose output is here.
Thanks for dealing with this.