Traced it down to a hardware problem. There was dirt between the key's rubber padding and the main board. For some reason, after cleaning the 'home' key the others sprang back into life.
** Changed in: linux (Ubuntu) Status: Confirmed => Invalid ** Tags removed: kernel-bug-exists-upstream keyboard -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1613696 Title: Several keys on Logitech keyboard not recognized To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1613696/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs