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

** Summary changed:

- power button not working using non-default kernel parameters, when Samsung laptop is booted in CSM mode; works fine in EFI mode
+ [Samsung NP700Z5C-S03CA] Power button not working using non-default kernel parameters, when booted in CSM mode; works fine in EFI mode

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https://bugs.launchpad.net/bugs/1114856

Title:
  [Samsung NP700Z5C-S03CA] Power button not working using non-default
  kernel parameters, when booted in CSM mode; works fine in EFI mode

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  When my Samsung NP700Z5C is booted in the CSM (BIOS compatibility)
  mode, pressing the power button has no effect. There is no scancode
  per "/lib/udev/keymap". The problem is quite annoying because if the
  laptop is accidentally sent to sleep or hibernate mode, there is no
  return back from sleep/hibernate. Pressing the power button has no
  effect. The laptop can be turned off by long-pressing the power
  button, with the collateral loss of all unsaved data.

  WORKAROUND: Remove non-default kernel parameters (ex. acpi=noirq).

  WORKAROUND: Boot in UEFI mode.

  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: linux-image-3.5.0-23-generic 3.5.0-23.35
  ProcVersionSignature: Ubuntu 3.5.0-23.35-generic 3.5.7.2
  Uname: Linux 3.5.0-23-generic x86_64
  ApportVersion: 2.6.1-0ubuntu10
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  val        2259 F.... pulseaudio
  Date: Sun Feb  3 22:56:12 2013
  HibernationDevice: RESUME=UUID=96bef07a-40d3-4067-8c9a-211548fc7184
  InstallationDate: Installed on 2013-01-17 (17 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 700Z3C/700Z5C
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-23-generic root=UUID=ef3ff468-e0b5-43db-ac4c-447c73805778 ro quiet splash acpi=noirq vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.5.0-23-generic N/A
   linux-backports-modules-3.5.0-23-generic  N/A
   linux-firmware                            1.95
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/19/2012
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: P04ABJ
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: NP700Z5C-S03CA
  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.:bvrP04ABJ:bd09/19/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn700Z3C/700Z5C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP700Z5C-S03CA:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
  dmi.product.name: 700Z3C/700Z5C
  dmi.product.version: 0.1
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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