Computer doesn't fully shut down

[André]

Sometimes when I turn off the computer it doesn't fully shut down. The splash screen is displayed, then disappears but the lights and fan keep turned on. Then if I don't notice it, the next day I have no battery left.

My version is Ubuntu 4.4.0-34.53-generic 4.4.15

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-34-generic 4.4.0-34.53
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: andremw 3760 F.... pulseaudio
CurrentDesktop: MATE
Date: Thu Aug 18 08:39:16 2016
HibernationDevice: RESUME=UUID=3c474d99-e2ed-48f6-872b-e079cc02bae9
InstallationDate: Installed on 2016-07-15 (33 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: Dell Inc. Latitude 3440
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic root=UUID=9a9185cc-07ba-40d6-82ac-6985ce7e4ff4 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-34-generic N/A
 linux-backports-modules-4.4.0-34-generic N/A
 linux-firmware 1.157.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/11/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 031P68
dmi.board.vendor: Dell Inc.
dmi.board.version: A10
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd08/11/2014:svnDellInc.:pnLatitude3440:pvrNotSpecified:rvnDellInc.:rn031P68:rvrA10:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Latitude 3440
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

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 v4.8 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/v4.8-rc2/

[André (mazoni-andre)]

Joseph, it's been a while now since I tested the kernel you asked but the problem has not been solved. I still get the same problem.

[penalvch (penalvch)]

André, to keep this relevant to upstream, one would want check for, and test the latest mainline kernel (now 4.8-rc6) as it is released.

Could you please advise?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[André (mazoni-andre)]

I forgot to answer here, but I tested the latest kernel and the problem remains.
4.8.0-040800rc8-generic

[penalvch (penalvch)]

André, the latest kernel is 4.9-rc6.