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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Anatoly Trosinenko, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.17

This can be done by clicking on the yellow circle with a black pencil
icon next to the word Tags located at the bottom of the bug description.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Tags added: latest-bios-1ecn33ww

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

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

** Summary changed:

- [Lenovo Y550P] Mute LED indication is inverted
+ [Lenovo IdeaPad Y550P] Mute LED indication is inverted

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https://bugs.launchpad.net/bugs/1380249

Title:
  [Lenovo IdeaPad Y550P] Mute LED indication is inverted

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Steps to reproduce (on my hardware):
  Boot Ubuntu 14.10.
  Press "Mute" hardware button several times.

  What is expected:
  When mute is on button LED is on, when mute is off button LED is off.

  What really happens:
  Mute button LED state is inverted relatively to what is expected.

  Notes:
  This bug is reproducible also when booted into the root shell of the recovery mode and switching mute state on/off with alsamixer while playing some audio file to control the actual mute state (button press does not mute/unmute sound in this case, but LED switches on/off in respond to alsamixer).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-22-generic 3.16.0-22.29
  ProcVersionSignature: Ubuntu 3.16.0-22.29-generic 3.16.4
  Uname: Linux 3.16.0-22-generic x86_64
  ApportVersion: 2.14.7-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  trosinenko   2236 F.... pulseaudio
   /dev/snd/controlC0:  trosinenko   2236 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Oct 12 14:02:59 2014
  InstallationDate: Installed on 2014-09-12 (29 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140905)
  MachineType: LENOVO 20035
  ProcFB: 0 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-22-generic root=UUID=6e74f7df-f07c-437a-8adc-a9e69604c36a ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-22-generic N/A
   linux-backports-modules-3.16.0-22-generic  N/A
   linux-firmware                             1.135
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/13/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 1ECN35WW(V5.09)
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Base Board Product Name
  dmi.board.vendor: LENOVO
  dmi.board.version: Base Board Version
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnLENOVO:bvr1ECN35WW(V5.09):bd08/13/2010:svnLENOVO:pn20035:pvrLenovoIdeaPadY550P:rvnLENOVO:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: 20035
  dmi.product.version: Lenovo IdeaPad Y550P
  dmi.sys.vendor: LENOVO

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