versions 4.4.0-108 and up hang on reboot; HP 8300 Elite CMT

[Nick Fankhauser]

Shutdown works fine.
On Reboot, the system hangs.

This is a problem on the current kernel (4.4.0.116) and appears to have been introduced in 4.4.0.106, 107 or 108. I make this assertion because I have version 4.4.0.105 and version 4.4.0.108 available on my computer. versions 105 and below work, versions 108 and up do not work.

I will upload a screen shot of the trace, since it occurs after drives are dismounted.

I started by making sure I have the most current firmware (BIOS) for this computer. It is on the most recent version.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-116-generic 4.4.0-116.140
ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98
Uname: Linux 4.4.0-116-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: nickf 2552 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Mar 6 12:52:16 2018
HibernationDevice: RESUME=UUID=8f1f8ead-e0d0-4468-b7fb-1328c0495e93
InstallationDate: Installed on 2012-09-27 (1986 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
MachineType: Hewlett-Packard HP Compaq Elite 8300 CMT
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-116-generic root=UUID=9766c23d-8567-48c0-a1eb-b01e0eed0170 ro acpi=force
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-116-generic N/A
 linux-backports-modules-4.4.0-116-generic N/A
 linux-firmware 1.157.17
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:

dmi.bios.date: 10/05/2016
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: K01 v03.04
dmi.board.asset.tag: 2UA23822YR
dmi.board.name: 3396
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: 2UA23822YR
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvrK01v03.04:bd10/05/2016:svnHewlett-Packard:pnHPCompaqElite8300CMT:pvr:rvnHewlett-Packard:rn3396:rvr:cvnHewlett-Packard:ct3:cvr:
dmi.product.name: HP Compaq Elite 8300 CMT
dmi.sys.vendor: Hewlett-Packard

[Nick Fankhauser (nick-fankhausers)]

Additional info: This is the line I added to /etc/default/grub to search for a working kernel and revert to 105 until this is fixed:

GRUB_DEFAULT="Advanced options for Ubuntu>Ubuntu, with Linux 4.4.0-105-generic"
#GRUB_DEFAULT=0

[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 stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.4 stable 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'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-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/v4.4.120

[Nick Fankhauser (nick-fankhausers)]

I installed 4.4.120-0404120-generic. Is this the version you intended?

This fixed my problem. Thank you!

Added kernel-fixed-upstream tag and changed status to Confirmed as requested.

Advice requested: At this point, should I just keep running this kernel until the regular release process catches up to this version?