HPLIP cannot detect printer HP Laserjet 100 Colot MPF M175nw

New installation of Ubuntu 20.04.2 LTS

Printer HP Laserjet 100 Colot MPF M175nw30 cannot be detected by hlip-3.21.4

Everithing seems to work properly but "Printer is not HPLIP installed" so that I cannot use scanner. I tried all troubleshooting but I MUST be missing something. Can anyone help?

Below you can find all the information (Firewall is inactive)

http://www.agriviva.it/HLIP_and_Ubuntu_20.pdf

Solution 1:

Thanks to Knud Larsen for sharing the resource.

I guess the problem was with the manual install of hlip-3.21.4 package from the HP support page.

After running:

sudo apt-get install hplip

and:

sudo hp-setup

the first time nothing happened. I had the same error:

no printer detected

The second time I have issued the command sudo hp-setup, the printer was finally detected!

At this point there was another issue: the automatic command (hp-plugin) to download the plugin did not work.

I have solved the problem following the discussion in this question in Ask Ubuntu: HPLIP Driver install fails on Ubuntu 20.04

Although I already had hplip-3.21.4.run installed in my system, I manually downloaded the latest script from the HPLIP website and ran:

sh hplip-3.21.4-plugin.run

Finally the printer was successfully installed.