package linux-image-4.4.0-31-generic 4.4.0-31.50 failed to install/upgrade: run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1

Pop-up error message on your desktop , so automatically I submit the problem.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-31-generic 4.4.0-31.50
ProcVersionSignature: Ubuntu 3.13.0-92.139-generic 3.13.11-ckt39
Uname: Linux 3.13.0-92-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: michal 4416 F.... pulseaudio
Date: Tue Aug 2 09:06:13 2016
ErrorMessage: run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
HibernationDevice: RESUME=UUID=1672887f-4a6b-4f42-9ab7-babbef0ab8ac
InstallationDate: Installed on 2015-02-07 (541 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: LENOVO 4291AY9
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-92-generic root=UUID=f9fa628d-74f2-4dcd-8ac0-1ce0656205f6 ro quiet splash
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions: grub-pc 2.02~beta2-36ubuntu3.1
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: initramfs-tools
Title: package linux-image-4.4.0-31-generic 4.4.0-31.50 failed to install/upgrade: run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
UpgradeStatus: Upgraded to xenial on 2016-08-02 (0 days ago)
dmi.bios.date: 02/14/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET58WW (1.28 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4291AY9
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8DET58WW(1.28):bd02/14/2012:svnLENOVO:pn4291AY9:pvrThinkPadX220:rvnLENOVO:rn4291AY9:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4291AY9
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO