I have made progress on this by purging ubuntu-desktop (no other packages were uninstalled at the same time) and then removing software-center (then something *aptdaemon*ish went away too). It's now offering to upgrade.
I have made progress on this by purging ubuntu-desktop (no other packages were uninstalled at the same time) and then removing software-center (then something *aptdaemon*ish went away too). It's now offering to upgrade.