Public bug reported:
When I press the brightness keys on the Lenovo X121e, I see that it's
moving the brightness up several levels rather than just one. Running
udevadm monitor shows (when the key is pressed):
KERNEL[66607.242993] change
/devices/pci0000:00/0000:00:01.0/backlight/acpi_video0 (backlight)
UDEV [66607.245662] change
/devices/pci0000:00/0000:00:01.0/backlight/acpi_video0 (backlight)
KERNEL[66607.493336] change
/devices/pci0000:00/0000:00:01.0/backlight/acpi_video0 (backlight)
UDEV [66607.494550] change
/devices/pci0000:00/0000:00:01.0/backlight/acpi_video0 (backlight)
KERNEL[66607.652904] change
/devices/pci0000:00/0000:00:01.0/backlight/acpi_video0 (backlight)
UDEV [66607.654247] change
/devices/pci0000:00/0000:00:01.0/backlight/acpi_video0 (backlight)
acpi_listen on the other hand produce only:
ibm/hotkey HKEY 00000080 00001010
video LCD 00000086 00000000
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-23-generic 3.2.0-23.36
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 1: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ubuntu 1617 F.... pulseaudio
/dev/snd/pcmC1D0c: ubuntu 1617 F...m pulseaudio
/dev/snd/controlC0: ubuntu 1617 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Generic'/'HD-Audio Generic at 0x90344000 irq 44'
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 'SB'/'HDA ATI SB at 0x90340000 irq 16'
Mixer name : 'Conexant CX20590'
Components : 'HDA:14f1506e,17aa21ec,00100000'
Controls : 8
Simple ctrls : 5
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw
unknown'
Mixer name : 'ThinkPad EC (unknown)'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.Amixer.values:
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Tue Jul 10 10:31:56 2012
HibernationDevice: RESUME=UUID=3933dbd8-a348-42c1-a37f-83b5b2db5613
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
MachineType: LENOVO 305152U
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
0 radeondrmfb
1 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic
root=UUID=f1d5705e-f9a7-4a90-b4c4-69fd8f27a306 ro quiet splash initcall_debug
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-23-generic N/A
linux-backports-modules-3.2.0-23-generic N/A
linux-firmware 1.79
SourcePackage: linux
StagingDrivers: rts_pstor
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/20/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8RET26WW (1.08 )
dmi.board.asset.tag: Not Available
dmi.board.name: 305152U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr8RET26WW(1.08):bd06/20/2011:svnLENOVO:pn305152U:pvrThinkPad:rvnLENOVO:rn305152U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 305152U
dmi.product.version: ThinkPad
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise staging
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https://bugs.launchpad.net/bugs/1023002
Title:
[Lenovo X121e] Brightness key events are multiplied
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