I think I found where the symptom comes from. I had only host name but not domain set up in the network settings. This results in sudo giving a warning in the text mode, but still working. For starting from menu, it means sudo simply does not work.
-- update manager stops when update check is asked manually https://bugs.launchpad.net/bugs/224303 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
