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[arun <arungpurohit@xxxxxxxxx>]

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => arun (arungpurohit)

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https://bugs.launchpad.net/bugs/1516320

Title:
  Cannot change backlight on my laptop

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Option stopped working after upgrading to 15.10, full light all time
  (before with some hacking it was working, but still was lacking
  keeping the levels between reboots)

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-18-generic 4.2.0-18.22
  ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
  Uname: Linux 4.2.0-18-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ab         2051 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Sat Nov 14 22:44:57 2015
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=33abcad5-3750-4855-b97b-2d5b0fb864ee
  InstallationDate: Installed on 2013-10-24 (751 days ago)
  InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U4E/540U4E
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic root=UUID=f467e962-e87d-4a39-a861-79138b4809d1 ro quiet splash resume=/dev/sdb2 vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-18-generic N/A
   linux-backports-modules-4.2.0-18-generic  N/A
   linux-firmware                            1.149.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/05/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P07ACM.063.130905.dg
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: NP530U4E-K02PL
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: SEC_SW_REVISION_1234567890ABCD
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP07ACM.063.130905.dg:bd09/05/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U4E/540U4E:pvrP07ACM:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP530U4E-K02PL:rvrSEC_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
  dmi.product.name: 530U4E/540U4E
  dmi.product.version: P07ACM
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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