Hello. I have a Canon TS5120 printer/scanner that I'm trying to install in 18.04. I downloaded a printer driver package from the Canon website, and ran the following commands in Terminal (disclaimer: I don't understand these commands -- I was just following advice):

cd Downloads
tar -zxvf cnijfilter2-5.50-1-deb.tar.gz
cd cnijfilter2-5.50-1-deb
sudo ./install.sh

The printer installed and worked correctly. I then downloaded the corresponding package for the scanner, and in Terminal entered the same commands as above, with the name of the scanner package: scangearmp2-3.50-1-deb.tar.gz

I got a message saying "installation complete", but the scanner does not work. My computer can't find or connect to the scanner. Also, the printer stopped working (can't find or connect).

I would appreciate any help. Thanks.