I have a HP 3630 all in one printer/scanner and it was working great on Ubuntu 16.04 with the HP Print manager. Now I did a clean and fresh install Ubuntu 18.04 and the printing work fine, but example Sane (or other scan software) can't find the device.
I have installed
hplip 3.18.4 that I found on the HP website, but still nothing. Even to add a printer in the HP manager didn't work.
In the WiFi I tried the WIFI-direct to connect with the printer and that works fine also, but the scan is not seen.
What to do to make scanning work on Ubuntu 18.04?