Much to my surprise, the issue was resolved after a reinstall of the system. I can't explain why, I don't think there was anything special with my previous install. Maybe it's related to the fact that the BIOS is upgraded in the meanwhile, I don't know...
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1434978 Title: HP Zbook 14 G2: systems restart after shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1434978/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs