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[Pekorius Nedas <NedasPekorius@xxxxxxxxx>]

At the moment I have no ability to boot windows so I can't check whether there are new BIOS. As far as I'm concerned I check for update no more than month ago. 
At the time being  dmidecode:
                                                       05FU
                                                       09/25/2012

But today I freshly reinstalled daily ISO of Saucy x64 and hotkeys works as they used to. 
But on raring hotkeys not working

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https://bugs.launchpad.net/bugs/973321

Title:
  [Samsung NP300V5Z-S01EE] Backlight/Brightness controls

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Unable to change screen backlight level

   Brightness function keys work only from 100% to around 85% and back
  to 100%, looks like it only moves one step down. but brightness can be
  modified directly on display settings, so the bug is only on the
  function keys.

  Samsung 300V5Z-S01EE Backlight

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-21-generic 3.2.0-22.35
  ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
  Uname: Linux 3.2.0-21-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  nedas      1516 F.... pulseaudio
  Date: Wed Apr  4 14:55:53 2012
  HibernationDevice: RESUME=UUID=bd74e065-5009-42e7-b53b-668df0b2b90b
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120404)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 300V3Z/300V4Z/300V5Z/200A4Y/200A5Y
  ProcEnviron:
   TERM=xterm
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-21-generic root=UUID=59772c8b-4134-4b2a-8c82-19f1fae7b446 ro quiet splash acpi_backlight=vendor vt.handoff=7
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/12/2011
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: 02FU
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 300V3Z/300V4Z/300V5Z/200A4Y/200A5Y
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: FAB1
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr02FU:bd10/12/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn300V3Z/300V4Z/300V5Z/200A4Y/200A5Y:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn300V3Z/300V4Z/300V5Z/200A4Y/200A5Y:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
  dmi.product.name: 300V3Z/300V4Z/300V5Z/200A4Y/200A5Y
  dmi.product.version: 0.1
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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