the name of this volume control is confusing since only line out is
connected to this audio output
Node 0x05 [Audio Output] wcaps 0x41d: Stereo Amp-Out
Control: name="PCM Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Device: name="ALC892 Analog", type="Audio", device=0
Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
Amp-Out vals: [0x2d 0x2d]
Converter: stream=8, channel=0
PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
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https://bugs.launchpad.net/bugs/1236965
Title:
pulseaudio does not recognize internal speakers [P180HMx, Realtek
ALC892, Speaker, Internal] volume slider problem
Status in “alsa-driver” package in Ubuntu:
New
Bug description:
steps to reproduce:
1. acquire a device with the problem, such as Clevo P180HM laptop
motherboard
2. install ubuntu 12.04 (now updated to 12.04.3 currently)
3. systray > speaker-icon > sound-settings > output tab
4. no entry for "speakers built-in audio" appears
workaround:
running the shell script mentioned in this comment helps --
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/946232/comments/158
however, the workaround is not completely satisfactory, because
adjusting the (singular) volume-slider provided by pulseaudio only
causes some of the (multiple) volume-sliders known to alsamixer to react.
Specifically, turning the pulseaudio volume upwards only changes the
'master' and belatedly the 'pcm' volumes inside alsamixer. This ignores
'speaker clfe' + 'speaker front' + 'speaker surround playback volume'
plus maybe others. Effectively, this means audio playback is weak: instead
of spreading typical 2ch audiofiles across all internal speakers, only some
are used, and only at whatever volume alsamixer specifies. (Turning the
ignored volumes up in alsamixer causes a different problem: then it is no
longer possible to lower the sound to a relatively-quiet volume.)
Here is some information from one of the ubuntu pulseaudio/alsa devs:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/946232/comments/159
David Henningsson (946...@bugs.launchpad.net) wrote:
...you have unusual hardware: in addition to normal
headphones and stereo line out, you have 5.1 internal speakers. This
leads to unusual alsamixer names (e g "Speaker Front") which we do not
match for in PulseAudio. Fixing that means that we should add those
names in PulseAudio - but let's discuss that in a new bug instead.
Let me know if you would like more specifics. I have run codecgraph,
alsa-info, etc.
$ cat /proc/asound/card*/codec#* | grep --before-context=4 --after-context=1
"Subsystem Id"
Codec: Realtek ALC892
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0892
Subsystem Id: 0x15588000
Revision Id: 0x100302
--
Codec: ATI R6xx HDMI
Address: 0
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x1002aa01
Subsystem Id: 0x00aa0100
Revision Id: 0x100200
$ lspci -vvnn | grep --after-context=1 "Audio device"
00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset
Family High Definition Audio Controller [8086:1c20] (rev 05)
Subsystem: CLEVO/KAPOK Computer Device [1558:8000]
--
01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Barts
HDMI Audio [Radeon HD 6800 Series] [1002:aa88]
Subsystem: CLEVO/KAPOK Computer Device [1558:8000]
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.5.0-41.64~precise1-generic 3.5.7.21
Uname: Linux 3.5.0-41-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: j 6328 F.... pulseaudio
/dev/snd/controlC0: j 6328 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf7f00000 irq 52'
Mixer name : 'Realtek ALC892'
Components : 'HDA:10ec0892,15588000,00100302'
Controls : 36
Simple ctrls : 16
Card1.Amixer.info:
Card hw:1 'Generic'/'HD-Audio Generic at 0xf7e40000 irq 54'
Mixer name : 'ATI R6xx HDMI'
Components : 'HDA:1002aa01,00aa0100,00100200'
Controls : 6
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Tue Oct 8 12:02:44 2013
InstallationMedia: This
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_Type: Volume slider, or mixer problems
Title: [P180HMx, Realtek ALC892, Speaker, Internal] volume slider problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/29/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.4
dmi.board.asset.tag: Not Applicable
dmi.board.name: P180HMx
dmi.board.vendor: CLEVO
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: Not Applicable
dmi.chassis.type: 10
dmi.chassis.vendor: CLEVO
dmi.chassis.version: Not Applicable
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd09/29/2011:svnCLEVO:pnP180HMx:pvrNotApplicable:rvnCLEVO:rnP180HMx:rvrNotApplicable:cvnCLEVO:ct10:cvrNotApplicable:
dmi.product.name: P180HMx
dmi.product.version: Not Applicable
dmi.sys.vendor: CLEVO
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