In my case, I was experiencing the same issues with a fresh install of 20.04[1], for HP PhotoSmart 5520 (MFD).
I was generally able to print, it was a bit more finicky than it had been previously, however scanning didn't work. Simple Scan noted an error message about being unable to communicate with the device. Running hp-doctor, or hp-check -t resulted the in getting same list of 'Missing Required Dependencies' as the OP did. After doing a bit of digging, I did the following: * Purged all HPLIP packages [2], e.g. sudo apt-get purge hplip hplip-data hplip-doc hplip-gui hpijs-ppds \ libsane-hpaio printer-driver-hpcups printer-driver-hpijs sudo rm -rf /usr/share/hplip/ sudo apt-get autoremove * Reinstalled the HPLIP packages from the repos (after having a failed run of the Automated Installer available on HP's website) [3] sudo apt-get install hplip hplip-gui After that, both printing and scanning worked without issue. Interestingly enough, running hp-doctor notes the same 'Missing Required Dependencies' as it did previously. [1] Regolith Linux, https://regolith-linux.org/ [2] https://askubuntu.com/questions/1056077/how-to-install-latest-hplip-on-my-ubuntu-to-support-my-hp-printer-and-or-scanner [3] https://askubuntu.com/questions/1137815/how-to-install-hplip-on-my-ubuntu-to-support-my-hp-printer-and-or-scanner -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881401 Title: HPLIP, hp-doctor, hp-check should support Ubuntu 20.04 LTS with its package base To manage notifications about this bug go to: https://bugs.launchpad.net/hplip/+bug/1881401/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
