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[Bug 939569] Re: Brightness control on Toshiba Satellite C660 laptop

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** Tags added: needs-full-computer-model needs-upstream-testing

** Tags added: lucid

** Description changed:

  Backlight control does not work on Toshiba Satellite C660 with Ubuntu 10.04 64 bits.
  The only trick I've found is  : xgamma -gamma 0.5 and that works.
  Hot keys Fn 6 and Fn 7 are active but have no effect on the brightness of the LCD.
+ 
+ WORKAROUND: I have fixed my problem by installing nvidia-current (through Synaptics package manager) which was not installed.
+ After installation I had to add this line in the Device section of xorg.conf :
+ on "RegistryDwords" "EnableBrightnessControl=1"
+ 
  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  solea      1395 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7200000 irq 22'
     Mixer name	: 'Realtek ALC269'
     Components	: 'HDA:10ec0269,1179fc94,00100100'
     Controls      : 13
     Simple ctrls  : 8
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xf7080000 irq 17'
     Mixer name	: 'Nvidia ID b'
     Components	: 'HDA:10de000b,10de0101,00100200'
     Controls      : 0
     Simple ctrls  : 0
  Card1.Amixer.values:
  
  DistroRelease: Ubuntu 10.04
  Frequency: Once a day.
  HibernationDevice: RESUME=UUID=a9db3f95-03cc-46ff-b102-2afaac3182de
  InstallationMedia: Ubuntu 10.04.4 LTS "Lucid Lynx" - Release amd64 (20120214.2)
  Lsusb:
   Bus 002 Device 002: ID 8087:0024
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 003: ID 04f2:b1d6 Chicony Electronics Co., Ltd
   Bus 001 Device 002: ID 8087:0024
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: TOSHIBA SATELLITE C660
  Package: linux 2.6.32.38.44
  PackageArchitecture: amd64
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-38-generic root=UUID=9f75943a-f922-4d92-bd6c-5133d82ee331 ro quiet splash
  ProcEnviron:
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-38.83-generic 2.6.32.52+drm33.21
  Regression: No
  RelatedPackageVersions: linux-firmware 1.34.7
  Reproducible: No
  RfKill:
  
  Tags: lucid graphics needs-upstream-testing
  Uname: Linux 2.6.32-38-generic x86_64
  UserGroups:
  
  dmi.bios.date: 07/11/2011
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: 1.10
  dmi.board.asset.tag: NULL
  dmi.board.name: PWWHA
  dmi.board.vendor: TOSHIBA
  dmi.board.version: 1.00
  dmi.chassis.asset.tag: *
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnTOSHIBA:bvr1.10:bd07/11/2011:svnTOSHIBA:pnSATELLITEC660:pvrPSC1QE-03P00FFR:rvnTOSHIBA:rnPWWHA:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
  dmi.product.name: SATELLITE C660
  dmi.product.version: PSC1QE-03P00FFR
  dmi.sys.vendor: TOSHIBA

-- 
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https://bugs.launchpad.net/bugs/939569

Title:
  Brightness control on Toshiba Satellite C660 laptop

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Backlight control does not work on Toshiba Satellite C660 with Ubuntu 10.04 64 bits.
  The only trick I've found is  : xgamma -gamma 0.5 and that works.
  Hot keys Fn 6 and Fn 7 are active but have no effect on the brightness of the LCD.

  WORKAROUND: I have fixed my problem by installing nvidia-current (through Synaptics package manager) which was not installed.
  After installation I had to add this line in the Device section of xorg.conf :
  on "RegistryDwords" "EnableBrightnessControl=1"

  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  solea      1395 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7200000 irq 22'
     Mixer name	: 'Realtek ALC269'
     Components	: 'HDA:10ec0269,1179fc94,00100100'
     Controls      : 13
     Simple ctrls  : 8
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xf7080000 irq 17'
     Mixer name	: 'Nvidia ID b'
     Components	: 'HDA:10de000b,10de0101,00100200'
     Controls      : 0
     Simple ctrls  : 0
  Card1.Amixer.values:

  DistroRelease: Ubuntu 10.04
  Frequency: Once a day.
  HibernationDevice: RESUME=UUID=a9db3f95-03cc-46ff-b102-2afaac3182de
  InstallationMedia: Ubuntu 10.04.4 LTS "Lucid Lynx" - Release amd64 (20120214.2)
  Lsusb:
   Bus 002 Device 002: ID 8087:0024
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 003: ID 04f2:b1d6 Chicony Electronics Co., Ltd
   Bus 001 Device 002: ID 8087:0024
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: TOSHIBA SATELLITE C660
  Package: linux 2.6.32.38.44
  PackageArchitecture: amd64
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-38-generic root=UUID=9f75943a-f922-4d92-bd6c-5133d82ee331 ro quiet splash
  ProcEnviron:
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-38.83-generic 2.6.32.52+drm33.21
  Regression: No
  RelatedPackageVersions: linux-firmware 1.34.7
  Reproducible: No
  RfKill:

  Tags: lucid graphics needs-upstream-testing
  Uname: Linux 2.6.32-38-generic x86_64
  UserGroups:

  dmi.bios.date: 07/11/2011
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: 1.10
  dmi.board.asset.tag: NULL
  dmi.board.name: PWWHA
  dmi.board.vendor: TOSHIBA
  dmi.board.version: 1.00
  dmi.chassis.asset.tag: *
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnTOSHIBA:bvr1.10:bd07/11/2011:svnTOSHIBA:pnSATELLITEC660:pvrPSC1QE-03P00FFR:rvnTOSHIBA:rnPWWHA:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
  dmi.product.name: SATELLITE C660
  dmi.product.version: PSC1QE-03P00FFR
  dmi.sys.vendor: TOSHIBA

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