Hibernation fails once in five

[Helless Day]

About every five hibernations, hardware keeps running and must be hard rebooted.

syslog shows:
systemd-sleep[15510]: /lib/systemd/system-sleep/wpasupplicant failed with error code 255.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-43-generic 4.4.0-43.63
ProcVersionSignature: Ubuntu 4.4.0-43.63-generic 4.4.21
Uname: Linux 4.4.0-43-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: lsd 1891 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat Oct 15 13:05:15 2016
HibernationDevice: RESUME=UUID=57990468-bc20-4ec0-a7de-8849c1c3d5dd
InstallationDate: Installed on 2016-07-16 (90 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IwConfig:
 enp2s0 no wireless extensions.

 lo no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. H61M-S2P-B3
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-43-generic root=UUID=4b738246-b2fc-4d81-9831-65b2913d9169 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-43-generic N/A
 linux-backports-modules-4.4.0-43-generic N/A
 linux-firmware 1.157.4
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/04/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: H61M-S2P-B3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd08/04/2011:svnGigabyteTechnologyCo.,Ltd.:pnH61M-S2P-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnH61M-S2P-B3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: H61M-S2P-B3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Brad Figg (brad-figg)]

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 v4.9 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/v4.9-rc1/

[Helless Day (hellessday)]

I tested Kernel 4.9.0-rc4 with more or less success, making it difficult to determine precisely if it fixed this bug in particular. Among the many problems encountered, however, none concerned hibernation.

Thanks for your help.