I see those messages as well although in my case all the sleep.target suspend.target hibernate.target hybrid-sleep.target targets are unmasked. Note: I'm not trying to suspend or hybernate, the laptop is running on external power. Is there a way to figure out what's causing those messages?
** Changed in: systemd (Ubuntu) Status: Expired => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896137 Title: syslog flooded with "Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1896137/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs