[HP Pavilion Sleekbook 14] Brightness control key doesn't work properly.

[Po-Hsu Lin]

CID: 201208-11466 (HP Pavilion Sleekbook 14)

Sometimes the brghtness control key work.
Sometimes not, and the level of adjustment is unpredictable.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.5.0-27-generic 3.5.0-27.46~precise1
ProcVersionSignature: Ubuntu 3.5.0-27.46~precise1-generic 3.5.7.7
Uname: Linux 3.5.0-27-generic x86_64
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
ApportVersion: 2.0.1-0ubuntu17.2
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 1: Generic_1 [HD-Audio Generic], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ubuntu 1626 F.... pulseaudio
 /dev/snd/controlC0: ubuntu 1626 F.... pulseaudio
CRDA:
 country TW:
  (2402 - 2472 @ 40), (3, 27)
  (5270 - 5330 @ 40), (3, 17), DFS
  (5735 - 5815 @ 40), (3, 30)
Card0.Amixer.info:
 Card hw:0 'Generic'/'HD-Audio Generic at 0xf0444000 irq 47'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 6
   Simple ctrls : 1
Card0.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Card1.Amixer.info:
 Card hw:1 'Generic_1'/'HD-Audio Generic at 0xf0440000 irq 48'
   Mixer name : 'IDT 92HD99BXX'
   Components : 'HDA:111d76e5,103c1902,00100303'
   Controls : 18
   Simple ctrls : 10
Date: Mon Apr 29 23:43:20 2013
HibernationDevice: RESUME=UUID=5873f7c8-a3f5-441a-9aca-6dfa96379d44
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
MachineType: Hewlett-Packard HP Pavilion Sleekbook 14 PC
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-27-generic root=UUID=93567174-9238-4837-ab8b-daefe09e4368 ro quiet splash initcall_debug vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-27-generic N/A
 linux-backports-modules-3.5.0-27-generic N/A
 linux-firmware 1.79.4
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/14/2012
dmi.bios.vendor: Insyde
dmi.bios.version: F.02
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1902
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 83.0F
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.02:bd09/14/2012:svnHewlett-Packard:pnHPPavilionSleekbook14PC:pvr0892100000005910000320100:rvnHewlett-Packard:rn1902:rvr83.0F:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion Sleekbook 14 PC
dmi.product.version: 0892100000005910000320100
dmi.sys.vendor: Hewlett-Packard

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

Po-Hsu Lin, could you please provide the full computer model as noted on the sticker (ex. HP Pavilion Sleekbook 14-b001xx)?

[Po-Hsu Lin (cypressyew)]

Hello Christopher,

Sorry, this model name here, HP Pavilion Sleekbook 14, is the only model name that I can get.
I'll be happy to provide the full model name if there is any mean to get it.

I will set the bug status back to "Confirmed"
Thanks!

[penalvch (penalvch)]

Po-Hsu Lin, would you be able to provide the S/N and P/N as per http://h10025.www1.hp.com/ewfrf/wc/weInput?cc=us&dlc=en&docname=c03754824&lc=en ?

[Po-Hsu Lin (cypressyew)]

Verified again on 201208-11466 with 12.04.2
(3.5.0-23 / 3.5.0-27 / 3.5.0-44)
it seems that the "unpredictable" brightness level change was caused by the slow response to brightness control of this system.

Also, it works fine on 3.5.0-44
Therefore, I will mark this bug as Invalid
Thanks!