Public bug reported:
I just installed powertop 2.0
(https://01.org/powertop/blogs/ceferron/2012/powertop-v2.0-release) and
saw that pulseaudio and my sound driver were always consuming power even
when no sound was playing. After muting the sound it did appear to die
down, but I'm not entirely sure about that.
Anyway, lots of power being used by sound when no sound is being played.
That isn't good for my battery.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pulseaudio 1:1.1-0ubuntu15
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mah 3189 F.... pulseaudio
/dev/snd/controlC0: mah 3189 F.... pulseaudio
/dev/snd/pcmC0D0c: mah 3189 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xd2600000 irq 45'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:14f1506e,17aa21e2,00100002
HDA:80862805,80860101,00100000'
Controls : 15
Simple ctrls : 7
Card1.Amixer.info:
Card hw:1 'Headset'/'Logitech Logitech USB Headset at usb-0000:00:1a.0-1.3.3,
full speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:0a14'
Controls : 4
Simple ctrls : 2
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: Fri May 11 17:21:30 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to precise on 2012-04-27 (14 days ago)
dmi.bios.date: 07/13/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8HET34WW(1.16)
dmi.board.asset.tag: Not Available
dmi.board.name: 11433FU
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:bvr8HET34WW(1.16):bd07/13/2011:svnLENOVO:pn11433FU:pvrThinkPadE520:rvnLENOVO:rn11433FU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 11433FU
dmi.product.version: ThinkPad E520
dmi.sys.vendor: LENOVO
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise
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https://bugs.launchpad.net/bugs/998246
Title:
pulseadio and snd driver top power usage
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