@Andreas: thank you for your suggestions. I removed the workaround from my artful machine and did what you asked, then, after some minutes, I reactivated the workaround and did the same. All the logs are attached for comparison (the real username and domain were redacted).
** Attachment added: "systemd-analyze_logs__artful.tgz" https://bugs.launchpad.net/ubuntu/+source/sssd/+bug/1723350/+attachment/5136654/+files/systemd-analyze_logs__artful.tgz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1723350 Title: sssd offline on boot, stays offline forever To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sssd/+bug/1723350/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs