As to the reply you got on https://bugzilla.samba.org/show_bug.cgi?id=13607, I can deny a "net cache flush" doing anything to get WINS name resolving going for me when booted with the original service file:
rene@t5500:~$ ping WD-NETCENTER ping: WD-NETCENTER: Name or service not known rene@t5500:~$ net cache flush rene@t5500:~$ ping WD-NETCENTER ping: WD-NETCENTER: Name or service not known -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1789097 Title: winbind does not work after reboot on Mint 19 / Ubuntu 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/samba/+bug/1789097/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs