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Message #19404
[Bug 1157440] Re: [Lenovo E435]: Brightness controls do not work
Still an issue in 12.04.3
** Tags added: 201211-12079
** Summary changed:
- [Lenovo E435]: Brightness controls do not work
+ [Lenovo E435, M490s]: Brightness controls do not work
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https://bugs.launchpad.net/bugs/1157440
Title:
[Lenovo E435, M490s]: Brightness controls do not work
Status in amd:
New
Status in “linux” package in Ubuntu:
Confirmed
Status in “linux” source package in Precise:
Confirmed
Bug description:
Problem:
Brightness keys or brightness settings controls do not change the
brightness or display as intended.
However, If I run the following command it works perfectly:
xrandr --output LVDS --brightness 0.5
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
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 1: Generic_1 [HD-Audio Generic], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ubuntu 2137 F.... pulseaudio
/dev/snd/controlC0: ubuntu 2137 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Generic'/'HD-Audio Generic at 0xf0544000 irq 46'
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 0xf0540000 irq 16'
Mixer name : 'Conexant CX20590'
Components : 'HDA:14f1506e,17aa5108,00100003'
Controls : 20
Simple ctrls : 10
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 Mar 19 17:49:29 2013
HibernationDevice: RESUME=UUID=ee9d3e8f-05df-494c-afc6-36438c39723b
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
MachineType: LENOVO 3469C01
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-23-generic root=UUID=5396c06a-e550-4e31-b4f5-d953a397915f 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
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/30/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: HNET14WW (1.01 )
dmi.board.asset.tag: Not Available
dmi.board.name: 3469C01
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:bvrHNET14WW(1.01):bd05/30/2012:svnLENOVO:pn3469C01:pvrThinkPadEdgeE435:rvnLENOVO:rn3469C01:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 3469C01
dmi.product.version: ThinkPad Edge E435
dmi.sys.vendor: LENOVO
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