My Ubuntu 14.04 easily detected AllinOne HP 4520 printer automatically. The driver it automatically selected is hpcups 3.24.3 But it does not see the scanner. I tried everything possible that I found on the web.
1. I used localhost:831 that also detected a printer but not a scanner. The driver I selected manually is hpcups 3.14.3. Maybe I should use different driver but I don't know which one.
2. I used Xsane which does not detect the scanner. In its control file there is "net" command. It searches the net and does not find anything.
3. I used hplip with the IP address of a printer. It does not detect even a printer not to mention printer with a scanner.
I have only basic knowledge of Ubuntu so I run out of ideas.
I would appreciate any suggestions. Thanks in advance.