Comment 13 for bug 1813768

Having worked around for three days, finally I have figured out where the problem lay and I understood Brian's comment. Thank you!!

Ubuntu 18.04 comes with 3-17-10. I was trying to install the latest version 3-19-12. I downloaded hplip-3.17.10.run from
https://sourceforge.net/projects/hplip/files/hplip/
and installed hplip-3.17.10-plugin.run during the installation process, which I downloaded beforehand from
https://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/

Now HP LaserJet P1102w works fine with Ubuntu 18.04.