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[arun <arungpurohit@xxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1516278

Title:
  Brightness level resets on restart[HP-15-af008ax][AMD Radeon R5]

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  The backlight brightness is not set to the level during the last logoff.If I restart (with the adapter on)  at 30%Brightness, on the very log on the brightness is reverted to 100%. However if I press the brightness button once (either the increase or the decrease) the brightness is adjusted to the level set at the previous logoff.Tested in upstream kernel 4.3.0 but the issue is not fixed there as well.
  Search in dmesg gives the following
  [    3.553567] [drm] radeon atom DIG backlight initialized
  [    4.883686] [drm:radeon_acpi_init [radeon]] *ERROR* Cannot find a backlight controller

  Current System:
  Linux Username-HP-Notebook 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 15:35:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
  Computer Model:
  HP-15 AF008ax

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-16-generic 4.2.0-16.19 [modified: boot/vmlinuz-4.2.0-16-generic]
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  soumyajyoti   1522 F.... pulseaudio
   /dev/snd/controlC0:  soumyajyoti   1522 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Nov 14 23:18:54 2015
  HibernationDevice: RESUME=UUID=32bbfbc8-d105-43a2-97d8-e6026bffbdab
  InstallationDate: Installed on 2015-11-11 (2 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: Hewlett-Packard HP Notebook
  ProcFB:
   0 radeondrmfb
   1 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic root=UUID=79ea6210-b7e1-4a35-b0e5-741b260fabf5 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-16-generic N/A
   linux-backports-modules-4.2.0-16-generic  N/A
   linux-firmware                            1.149.2
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/13/2015
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 80CC
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 99.35
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.13:bd08/13/2015:svnHewlett-Packard:pnHPNotebook:pvrType1ProductConfigId:rvnHewlett-Packard:rn80CC:rvr99.35:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Notebook
  dmi.product.version: Type1ProductConfigId
  dmi.sys.vendor: Hewlett-Packard

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