This also affects me, on Ubuntu 20.04.2 with synaptic 0.84.6ubuntu5, and on more than one machine.
Unfortunately I can't reproduce it reliably; core packages just appear in the 'local or obsolete' tab from time to time, and stay there. On one machine it is network-manager and pulseaudio as in the original post above, but on another it is: libc-bin libc-dev-bin libc6 libc6-dbg libc6-dev libc6-i386 locales Then as of today also: ubuntu-advantage-tools Just as a check I ran 'apt list ?obsolete' to see whether apt was at fault, but that listed only genuinely local packages. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1856294 Title: programs in "Installed (local or obsolete)" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/1856294/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs