kernel-packages team mailing list archive

[Anthony Wong <anthony.wong@xxxxxxxxxx>]

According to the above investigation, it is a bios regression and not
much we can do about it.

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https://bugs.launchpad.net/bugs/1152544

Title:
  HP Envy 23 AIO - No way to dim display

Status in HWE Next Project:
  Incomplete
Status in linux package in Ubuntu:
  Triaged

Bug description:
  There is a test for cert that dims the display automatically to 50%
  and then raises the brightness back to 100%.  This test failed to
  change the brightness at all on the Envy 23.

  I then tried using the Brightness and Lock too in the System Settings
  menu, and the Brightness slider had no effect at all on the display.

  There is no working method to alter screen brightness.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.5.0-23-generic 3.5.0-23.35~precise1
  ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2
  Uname: Linux 3.5.0-23-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 2.0.1-0ubuntu17.1
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1708 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7c00000 irq 51'
     Mixer name	: 'IDT 92HD91BXX'
     Components	: 'HDA:111d76e0,103c2adc,00100102'
     Controls      : 18
     Simple ctrls  : 9
  Date: Fri Mar  8 05:41:43 2013
  HibernationDevice: RESUME=UUID=5a0be338-b72f-4759-947d-2c799a9951e2
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
  MachineType: Hewlett-Packard 520-1299
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-23-generic root=UUID=759df16a-1f46-4f4e-b7b7-bff65b4d6bec ro quiet splash initcall_debug vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.5.0-23-generic N/A
   linux-backports-modules-3.5.0-23-generic  N/A
   linux-firmware                            1.79.1
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  StagingDrivers: rts_pstor
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/25/2012
  dmi.bios.vendor: AMI
  dmi.bios.version: 8.10
  dmi.board.asset.tag: 3CR2080BJX
  dmi.board.name: 2ADC
  dmi.board.vendor: PEGATRON CORPORATION
  dmi.board.version: 1.05
  dmi.chassis.asset.tag: 3CR2080BJX
  dmi.chassis.type: 3
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnAMI:bvr8.10:bd09/25/2012:svnHewlett-Packard:pn520-1299:pvr1.00:rvnPEGATRONCORPORATION:rn2ADC:rvr1.05:cvnHewlett-Packard:ct3:cvr:
  dmi.product.name: 520-1299
  dmi.product.version: 1.00
  dmi.sys.vendor: Hewlett-Packard

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