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[Jon Cowell <1283589@xxxxxxxxxxxxxxxxxx>]

I also have a Samsung NP-A530U3C-A01UK laptop that exhibits the same
behaviour. Since applying the fix from juanmanul all is now well.

Many thanks juanmanual for identifying the cause for this long running
issue and for working diligently to find the fix.

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https://bugs.launchpad.net/bugs/1283589

Title:
  [Samsung NP530U3C-A01] LID close, AC, and battery status events not
  produced anymore

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  On my Samsung Series 5 NP530U3C-A01 the LID close, AC, and battery
  status events not produced anymore. The situation is the same (tested
  with trusty-desktop-amd64.iso 2014-02-22). I created a blog post where
  I can put all the information related to this bug here:
  http://zenstep.com.ar/samsung-linux/

  In summary, after a suspend sleep with many events (8 plug/unplug, or
  battery dropping or increasing about 16%, maybe less), the Embedded
  Controller accumulates those events and stops producing GPE 0x17.
  Neither Windows nor Linux query those accumulated events, because the
  EC doesn't produce GPE 0x17 anymore. The issue persists between
  restarts and shutdowns, and even after re-suspending/re-resuming.
  Hitting the reset button through the hole in the back fixes the
  problem temporarily. That is, until the next unlucky suspend.

  IMPORTANT: if the laptop is never ever suspended, the issue never
  comes back.

  To force the issue to happen, you can either:
  1) Sleep the computer in linux (by closing the lid or any other means).
  2) Unplug from the wall, plug, unplug, plug, unplug, plug, unplug, plug (8 actions or more).
  3) Resume from sleep. You'll note that the battery icon is fixed, and unplugging or plugging doesn't update battery status anymore. Also note that the ability to suspend by closing the LID is lost.

  OR:
  1) echo disable > /sys/firmware/acpi/interrupts/gpe17
  2) plug, unplug, plug, unplug, plug, unplug, plug, unplug (8 actions)
  3) echo enable > /sys/firmware/acpi/interrupts/gpe17

  WORKAROUND: Turn off the computer, unplug it, hit the reset button in
  the back of the laptop, and then plug it again.

  WORKAROUND (kernel patch 1):
  https://bugzilla.kernel.org/show_bug.cgi?id=44161#c133

  BETTER WORKAROUND (kernel patch 2):
  https://bugzilla.kernel.org/show_bug.cgi?id=44161#c149

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-11-generic 3.13.0-11.31
  ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3
  Uname: Linux 3.13.0-11-generic x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     2546 F.... pulseaudio
  CasperVersion: 1.337
  Date: Sat Feb 22 22:57:34 2014
  LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140222)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: initrd=/casper/initrd.lz file=/cdrom/preseed/hostname.seed boot=casper  quiet splash -- BOOT_IMAGE=/casper/vmlinuz.efi
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-11-generic N/A
   linux-backports-modules-3.13.0-11-generic  N/A
   linux-firmware                             1.125
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/15/2013
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: P14AAJ
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: SAMSUNG_NP1234567890
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: FAB1
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
  dmi.product.name: 530U3C/530U4C
  dmi.product.version: 0.1
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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