I updated from ubuntu 14 to 15.04 so HPLIP 3.15.2 is installed and in theory the HP printer officejet 5740 e-all-in-one should be supported. Yet the HPLIP does not recognize the printer from the USB connection (although the lsusb command from terminal shows that a printer is indeed connected: Bus 002 Device 004: ID 03f0:cd11 Hewlett-Packard.
I can actually print using the installation from the system setting, but I don't have the scanner and let alone the fax. Neither of 'Simple scan', 'Acquire Images' and 'Xsane' identify a scanner. The CUPS web interface shows that there is a printer named 'HP_Officejet_5740_series', with description 'HP Officejet 5740 series' and 'Driver: HP Officejet 5740 Series, hpcups 3.15.2 '; connection 'usb://HP/Officejet%205740%20series?serial=TH4A6330Q805ZF&interface=1'; location 'Gigiux'. I can even print the test page. Yet the HP Device Manager does not identify a printer neither from USB (thus the wireless connections are also non available) nor from CUPS. Hence no scanner (let alone the fax). Even providing the direction of the usb (002:004) does not help.
So the question is: how can I properly install the HP officejet 5740 e-all-in -one and specifically how can I set the scanner (and optionally even the fax)?
Thank you
Gigiux