I recently upgraded my EOS computer by installing EOS Hera 5.1. I did a normal install on the root directory "/" but kept everything else (other partitions like /home, /opt etc).
I have a printer/scanner combination here (Canon PIXMA MG5750) that I already used before with my previous EOS Loki.
After upgrading the computer, scanning works (connected via USB cable and with package simple-scan), but printing DOES NOT. It did work with Loki on the same computer. I have not moved any cable or reconfigured the printer or changed anything else but the EOS installation.
What's the concrete problem? When I switch on the printer and enter the settings screen printer, I see that my printer is correctly recognized (as Canon MG5700 series), but marked as disabled. I also cannot use it to print from a program (it does not show the printer in the printing submenus).
I checked the only other similar question here on eos stackexchange, but it did not help me. Maybe it's just something I don't understand about the answers.