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[Alex Barattini <alex.barattini@xxxxxxxxx>]

alex@alex-Inspiron-5521:~$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
[sudo] password for alex: 
A12
10/25/2013

I updated the BIOS to version suggested but did not produce any change.
It remains impossible to adjust the screen brightness

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https://bugs.launchpad.net/bugs/1261853

Title:
  8086:0166 [Dell Inspiron 15R 5521] Impossible to adjust the screen
  backlight

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  the change in the level of illumination of the screen, through the
  corresponding option in the control panel, has no effect

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-14-generic 3.11.0-14.21
  ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
  Uname: Linux 3.11.0-14-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alex       1443 F.... pulseaudio
                        alex      11159 F.... pulseaudio
  Date: Tue Dec 17 18:50:13 2013
  HibernationDevice: RESUME=UUID=04335018-6e1d-453d-a8ba-25ae1c34f2eb
  InstallationDate: Installed on 2013-12-14 (2 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Dell Inc. Inspiron 5521
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=it
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-14-generic.efi.signed root=UUID=d4cdcfba-0a53-41d0-a9ce-0516d3fab0f0 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-14-generic N/A
   linux-backports-modules-3.11.0-14-generic  N/A
   linux-firmware                             1.116
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/22/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A06
  dmi.board.name: 0K08H3
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A06
  dmi.modalias: dmi:bvnDellInc.:bvrA06:bd02/22/2013:svnDellInc.:pnInspiron5521:pvrA06:rvnDellInc.:rn0K08H3:rvrA00:cvnDellInc.:ct8:cvrA06:
  dmi.product.name: Inspiron 5521
  dmi.product.version: A06
  dmi.sys.vendor: Dell Inc.

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