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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during
any development cycle it is impossible for us to review them all.
Therefore, we occasionally resort to using automated bots to request
further testing. This is such a request.

  With the recent release of this Ubuntu release, would like to confirm
if this bug is still present. Please test again with the newer kernel
and indicate in the bug if this issue still exists or not.

You can update to the latest development kernel by simply running the
following commands in a terminal window:

    sudo apt-get update
    sudo apt-get dist-upgrade

If the bug still exists, change the bug status from Incomplete to
Confirmed. If the bug no longer exists, change the bug status from
Incomplete to Fix Released.

If you want this bot to quit automatically requesting kernel tests, add
a tag named: bot-stop-nagging.

 Thank you for your help, we really do appreciate it.


** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

** Tags added: kernel-request-3.13.0-24.46

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https://bugs.launchpad.net/bugs/1249219

Title:
  8086:0116 [Lenovo B570] backlight control acpi_video0 instead
  intel_backlight

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After upgrading to new release (13.10), when i control brightness,
  system change value in file
  /sys/class/backlight/acpi_video0/brightness instead of
  /sys/class/backlight/intel_backlight/brightness by default. On 13.04
  or older brightness works good.

  ---
  ApportVersion: 2.12.6-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  timofey    2907 F.... pulseaudio
  CurrentDmesg:
   Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
   dmesg: write failed: Broken pipe
  DistroRelease: Ubuntu 14.04
  InstallationDate: Installed on 2013-05-28 (169 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: LENOVO HuronRiver Platform
  MarkForUpload: True
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.12.0-2-generic root=UUID=5f54dc08-5f0f-4ab1-bdf2-844517b2419b ro rootflags=subvol=@ acpi_backlight=vendor
  ProcVersionSignature: Ubuntu 3.12.0-2.7-generic 3.12.0
  Tags:  trusty
  Uname: Linux 3.12.0-2-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2013-07-08 (127 days ago)
  UserGroups: audio autopilot libvirtd sudo video
  WifiSyslog:

  dmi.bios.date: 10/27/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 44CN43WW
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Emerald Lake
  dmi.board.vendor: LENOVO
  dmi.board.version: FAB1
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnLENOVO:bvr44CN43WW:bd10/27/2011:svnLENOVO:pnHuronRiverPlatform:pvrLenovoB570:rvnLENOVO:rnEmeraldLake:rvrFAB1:cvnLENOVO:ct10:cvr0.1:
  dmi.product.name: HuronRiver Platform
  dmi.product.version: Lenovo B570
  dmi.sys.vendor: LENOVO

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