The PC would not shutdown or reboot automatically. It is stuck at the starting shutdown/reboot stage

[Aravind]

The PC would not shutdown or reboot automatically. It is stuck at the starting shutdown/reboot stage

This is a clean install. I have tried this on 16.04 as well as 18.04 latest updated version and the issue still persists. Tried all options provided on the net by adding acpi off reboot pci reboot bios etc etc, none worked.

Hence reporting this issue. In order to turn off the machine or reboot the machine must be swtiched off by pressing the power button.

Hope a fix is provided, really getting irritated by this issue. Have more than 20 machines that are affected by this.

---Update on 27th September 2018
As requested tested with mainline kernel v4.19-rc5, the bug still exists. The PC gets stuck at the reboot or the shutdown stage. Hence adding the additional tag.

kernel-bug-exists-upstream

----
Regards
Aravind

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-34-generic 4.15.0-34.37
ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18
Uname: Linux 4.15.0-34-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: linux01 1205 F.... pulseaudio
CurrentDesktop: XFCE
Date: Tue Sep 25 23:21:52 2018
HibernationDevice: RESUME=UUID=9eab03de-f2c4-4f91-9b45-c52cd37c463b
InstallationDate: Installed on 2018-09-25 (0 days ago)
InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
IwConfig:
 enp4s0 no wireless extensions.

 lo no wireless extensions.
MachineType: Maxtang BYT60
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-34-generic root=/dev/mapper/xubuntu--vg-root ro
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-34-generic N/A
 linux-backports-modules-4.15.0-34-generic N/A
 linux-firmware 1.173.1
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/12/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: BYT6T304
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: BYT60
dmi.board.vendor: Maxtang
dmi.board.version: Rev 2.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrBYT6T304:bd09/12/2017:svnMaxtang:pnBYT60:pvrRev2.0:rvnMaxtang:rnBYT60:rvrRev2.0:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: BYT60
dmi.product.version: Rev 2.0
dmi.sys.vendor: Maxtang

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

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19 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/v4.19-rc5

[Aravind (aravindr)]

---Update on 27th September 2018
As requested tested with mainline kernel v4.19-rc5, the bug still exists. The PC gets stuck at the reboot or the shutdown stage. Hence adding the additional tag.

kernel-bug-exists-upstream and making the bug as confirmed

[Ilian Zhelyazov (ilianiron)]

 This bug affected me too! Ubuntu-Budgie 19.04 64-bit dual boot with windows 10 kernel 5.0.0.14 stuck ad reboot/shutdown. Only reset button work! Trying with install latest nvidia-drivers, but no reason still resist the problem!