Kernel 4.15.0-13.14 reboots instead of powering off (when on battery) on HP Spectre x360 ae-000x

[Dmitry Malykhanov]

This might be a duplicate of #1756455

HP Spectre x360 13", model 13-ae004na, secure boot on, latest BIOS F.15A, Ubuntu is the only system on disk.

When using kernel 4.15.0-13 the system does not power off but instead reboots. Both halt -p from the command line and menu action leads to reboot instead of turning hardware off. 4.15.0-12 has the same problem (see #1756455). Booting with kernel 4.15.0-10 resolves the issue, system turns off power and stays powered off.

* secure boot enabled or disabled makes no difference

* kernel 4.15.0-10 correctly powers off system (halt -p) every time, power source makes no difference

* kernel 4.15.0-13 correctly powers off system only when running on AC

* kernel 4.15.0-13 does NOT power off system (reboots instead) when AC power is NOT connected (running on battery) every time

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-13-generic 4.15.0-13.14
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
Uname: Linux 4.15.0-13-generic x86_64
ApportVersion: 2.20.9-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: dmitry 1648 F.... pulseaudio
CurrentDesktop: ubuntu-communitheme:ubuntu:GNOME
Date: Fri Mar 30 14:39:28 2018
HibernationDevice: RESUME=UUID=7b592f97-cd3d-46d3-8183-1685fd2441b4
InstallationDate: Installed on 2018-03-10 (20 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180309)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 8087:0a2b Intel Corp.
 Bus 001 Device 002: ID 04f2:b593 Chicony Electronics Co., Ltd
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: HP HP Spectre x360 Convertible 13-ae0xx
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-13-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-13-generic N/A
 linux-backports-modules-4.15.0-13-generic N/A
 linux-firmware 1.173
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/22/2018
dmi.bios.vendor: AMI
dmi.bios.version: F.15
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 83B9
dmi.board.vendor: HP
dmi.board.version: 56.37
dmi.chassis.type: 31
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAMI:bvrF.15:bd02/22/2018:svnHP:pnHPSpectrex360Convertible13-ae0xx:pvr:rvnHP:rn83B9:rvr56.37:cvnHP:ct31:cvrChassisVersion:
dmi.product.family: 103C_5335KV HP Spectre
dmi.product.name: HP Spectre x360 Convertible 13-ae0xx
dmi.sys.vendor: HP

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.16 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16

[Dmitry Malykhanov (dmalykhanov)]

The system was originally installed using a snapshot ISO which had kernel 4.15.0-10. And everything was working great, system was powering off as expected. I still keep this kernel installed and actually use it daily. So everything was working fine with 4.15.0-10.11.

I have not tried the 4.16 release yet (will do soon), but 4.16.0-041600rc7 was sort of similar. The 4.15.0-12 and 4.15.0-13 just do not power off (and instead reboot the machine) 100% of the time. With 4.16rc7 it was more like 50/50 (could not figure out the pattern yet). Will try the 4.16 release and report back.

[Dmitry Malykhanov (dmalykhanov)]

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.

[Kai-Heng Feng (kaihengfeng)]

Can you do a kernel bisect between 4.15.0-10.11 and 4.15.0-12?

[Dmitry Malykhanov (dmalykhanov)]

4.15.0-12 had the same problem, please see #1756455 [1] (which is absolutely the same as this one).

I have also tried all mainline kernels from 4.15.3 up to 4.17rc1, and here are the results:

* all mainline kernels in branch 4.15 do NOT have any issues
* starting with mainline 4.16.0 it is impossible to shut down (reboots instead)
* Ubuntu kernel 4.15.0-12 HAS this problem

So this regression was introduced in Ubuntu kernel 4.15.0-12, and in mainline kernel 4.16

1. https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1756455