Nicolas K, it wouldn't hurt to contact Lenovo requesting a version for
your hardware (or confirm yours is the latest).

Could you please advise?

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1651294

Title:
  [Lenovo IdeaCentre A540] Doesn't poweroff on shutdown

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  After switching from Lubuntu 15.10 to Lubuntu 16.04, I cannot shutdown my 
(Lenovo A540) computer anymore. The Lubuntu logout screen hangs indefinitely 
and doesn't react to most keyboard combinations.
  I thus have to press the power button for a few (~5) seconds in order to shut 
it down.

  I don't have this problem with Windows 10 (dual boot).

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-53-generic 4.4.0-53.74
  ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30
  Uname: Linux 4.4.0-53-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  nico       2096 F.... pulseaudio
   /dev/snd/controlC1:  nico       2096 F.... pulseaudio
  CurrentDesktop: LXDE
  Date: Mon Dec 19 20:54:01 2016
  HibernationDevice: RESUME=UUID=ef8c9700-bfb5-44a4-8d49-f82e03fd6e68
  InstallationDate: Installed on 2016-02-13 (310 days ago)
  InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO F0AN
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-53-generic 
root=UUID=4d7d95e5-cfce-4e21-84fb-2dd965595f63 ro acpi=noirq net.ifnames=0 
biosdevname=0 quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-53-generic N/A
   linux-backports-modules-4.4.0-53-generic  N/A
   linux-firmware                            1.157.6
  SourcePackage: linux
  StagingDrivers: r8723au
  UpgradeStatus: Upgraded to xenial on 2016-12-17 (2 days ago)
  dmi.bios.date: 09/30/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: O00KT19AUS
  dmi.board.name: INVALID
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058 STD
  dmi.chassis.type: 13
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnLENOVO:bvrO00KT19AUS:bd09/30/2014:svnLENOVO:pnF0AN:pvrLenovoA540:rvnLENOVO:rnINVALID:rvr31900058STD:cvnLENOVO:ct13:cvrChassisVersion:
  dmi.product.name: F0AN
  dmi.product.version: Lenovo A540
  dmi.sys.vendor: LENOVO

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