SUMMARY After the major upgrade to Ubuntu 24.04 Noble, I and at least one other person (https://discuss.kde.org/t/printing-not-working-anymore/23504) noticed that printing stopped working. STEPS TO REPRODUCE 1. Upgrade Neon 2. Try to print something OBSERVED RESULT Applications don't know how to print any more. EXPECTED RESULT Printing should keep working. WORKAROUND sudo apt install print-manager SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE neon 6.2, Ubuntu 24.04 Noble (after major upgrade) neon-desktop: 4+p24.04+vrelease+git20241104.0535 ADDITIONAL INFORMATION After reinstalling print-manager, everything started working again and all my printers were still there. Probably relevant, but I'm not really sure what it means: $ grep print-manager /var/log/dist-upgrade/apt.log ignore old unsatisfied important dependency on print-manager:amd64 ignore old unsatisfied important dependency on print-manager:amd64