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[Launchpad Bug Tracker <1140614@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

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

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https://bugs.launchpad.net/bugs/1140614

Title:
  [Asus Eee PC X101CH] Display brightness is always 0 and the screen is
  hardly readble after boot

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  After boot, display brightness is always 0 and the screen is hardly readable.
  cat /sys/class/backlight/acpi_video0/brightness -> 7
  cat /sys/class/backlight/psb-bl/brightness -> 0

  Workadound

  To fix the system brightness, open the terminal application and run
  these commands:

  sudo -s
  [enter your password]
  echo 80 > /sys/class/backlight/psb-bl/brightness
  exit

  For permentant fix edit /etc/rc.local as root, and add this line
  before the line "exit 0":

  echo 80 > /sys/class/backlight/psb-bl/brightness

  You may use any value from 0 to 100 instead of 80.
  --- 
  ApportVersion: 2.6.1-0ubuntu10
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  nirs       2070 F.... pulseaudio
  DistroRelease: Ubuntu 12.10
  HibernationDevice: RESUME=UUID=4cebec9a-7504-469c-8677-d25304edfd40
  InstallationDate: Installed on 2012-06-08 (267 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  MachineType: ASUSTeK COMPUTER INC. X101CH
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 psbfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-26-generic root=UUID=8a182610-1789-4b8d-b2e3-18f776104030 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.5.0-26.40-generic 3.5.7.6
  RelatedPackageVersions:
   linux-restricted-modules-3.5.0-26-generic N/A
   linux-backports-modules-3.5.0-26-generic  N/A
   linux-firmware                            1.95
  Tags:  quantal
  Uname: Linux 3.5.0-26-generic i686
  UpgradeStatus: Upgraded to quantal on 2013-02-22 (7 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 01/06/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: X101CH.0501
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: X101CH
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: x.xx
  dmi.chassis.asset.tag: 0x00000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: x.x
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX101CH.0501:bd01/06/2012:svnASUSTeKCOMPUTERINC.:pnX101CH:pvrx.x:rvnASUSTeKCOMPUTERINC.:rnX101CH:rvrx.xx:cvnASUSTeKCOMPUTERINC.:ct10:cvrx.x:
  dmi.product.name: X101CH
  dmi.product.version: x.x
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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