I iupgraded to winbind 4.3.0 using ppa:bnd-acc/samba43 and the problem was fixed. It seems this bug was fixed upstream. Any chance having the Trusty package fixed / updated?
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/1315565 Title: nss-winbind is returing -1 for supplemental groups To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1315565/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs