@brian-murray, I confirm that with your workaround from comment #3 the raspi kernels are not removed after the upgrade:
$ dpkg -l | grep "5\.4\.0\." ii linux-headers-raspi 5.4.0.1015.50 arm64 Raspberry Pi Linux kernel headers ii linux-image-raspi 5.4.0.1015.50 arm64 Raspberry Pi Linux kernel image ii linux-raspi 5.4.0.1015.50 arm64 Complete Raspberry Pi Linux kernel and headers -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1889449 Title: 18.04 to 20.04.1 upgrade on raspberry pi removes too many kernel meta packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1889449/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs