I was able to get Yubikey 4 working by reinserting it. Also I checked and sounds like it works with e.g. U2F and GPG without reinsertion, so it has some kind of multi-function support.
Closing as Invalid. Sounds like not Ubuntu software problem. ** Changed in: gnupg2 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1641746 Title: gpg2: gpg2 --card-status: gpg: selecting openpgp failed: Card error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnupg2/+bug/1641746/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs