STEPS TO REPRODUCE 1. Try adding new printer (HP LasetJet Pro M501dn) 2. Go to the driver selection dialog OBSERVED RESULT At least some drivers duplicated multiple times in the list while there is just one file on the disc. In my case I had 6 identical lines with the needed driver. EXPECTED RESULT Every driver file listed one time only SOFTWARE VERSIONS (available in About System) KDE Plasma Version: 5.12.7 KDE Frameworks Version: 5.47.0 Qt Version: 5.9.5 ADDITIONAL INFORMATION Kubuntu-backports latest versions. Additional discussion: https://askubuntu.com/q/1090897/20275
I believe this is just different versions of the driver (simplified, etc.). With 6.0.0, you can maximize the system settings and see the complete driver description.