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[anon512 <abpabp@xxxxxxx>]

0acaab5367a2c4140bd965a0ad3ea265af4d43ed  BUG PRESENT
0ad4991cae47c0d3ae93e1531ba5572d223d700c  BUG NOT PRESENT
Test results

0fa8794e65348a08722aa3eed9df0034bca8d4cb  BUG NOT PRESENT
5c574f501d46be79a4a1344b63747844be3674f5  BUG NOT PRESENT
5d434fcb255dec99189f1c58a06e4f56e12bf77d  BUG NOT PRESENT
34f8f1031cdccc73ab002dfe5f65ec89c3314457  BUG NOT PRESENT
078be02b80359a541928c899c2631f39628f56df  BUG NOT PRESENT
149b306089b88e186942a8d6647028ae6683aaf9  BUG PRESENT 
371deb9500831ad1afbf9ea00e373f650deaed2f  BUG PRESENT
554c06ba3ee29cf453fca17e9e61120b75aa476d  BUG NOT PRESENT
4294dcf7e335da72fe81538c46b4a8e83037ea20  BUG NOT PRESENT
73287a43cc79ca06629a88d1a199cd283f42456a  BUG PRESENT
151173e8ce9b95bbbbd7eedb9035cfaffbdb7cb2  BUG NOT PRESENT
a50188dae3089dcd15a6ae793528c157680891f1  BUG PRESENT
b2a63431b49f4ef4df1ea5ddb799af48cfa349fc  BUG NOT PRESENT
e4f5a3adc454745fea35f1c312e14cbeba6e0ea4  BUG PRESENT

94a409319561ec1847fd9bf996a2d5843ad00932 needs kernel for testing

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https://bugs.launchpad.net/bugs/1354710

Title:
  Backlight control does not work, but there are entries in
  /sys/class/backlight. Lenovo B570

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Laptop model: Lenovo B570
  package version: Ubuntu 3.13.0-32.57-generic 3.13.11.4

  I expected the keys for changeing the backlight brightness to work
  they had no effect on the backlight

  further details in attatched Tar

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-32-generic 3.13.0-32.57
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic i686
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  x321x321   1977 F.... pulseaudio
  Date: Sat Aug  9 16:11:34 2014
  HibernationDevice: RESUME=UUID=61c2c6a6-4b45-4af0-941a-dadf05ad0aba
  InstallationDate: Installed on 2014-07-31 (8 days ago)
  InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140723)
  MachineType: LENOVO 1068FJG
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-32-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.127.5
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/11/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 44CN36WW
  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:bvr44CN36WW:bd07/11/2011:svnLENOVO:pn1068FJG:pvrLenovoB570:rvnLENOVO:rnEmeraldLake:rvrFAB1:cvnLENOVO:ct10:cvr0.1:
  dmi.product.name: 1068FJG
  dmi.product.version: Lenovo B570
  dmi.sys.vendor: LENOVO

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