Generally 4.16.0-041600.201804012230 seems to have the same problem. "Generally" means that 4.16 behaviour seems to be even more random - sometimes it powers off correctly, and sometimes it does not power off even on AC (and reboots). Unfortunately, I could not figure out the exact rules and conditions. However, most of the time 4.16 fails to cut the power and reboots the box instead.
And 4.15.0-10.11 is rock solid, always powers off as expected. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1760110 Title: Kernel 4.15.0-13.14 reboots instead of powering off (when on battery) on HP Spectre x360 ae-000x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1760110/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs