** Changed in: alsa-driver (Ubuntu)
Status: New = Incomplete
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https://bugs.launchpad.net/bugs/1033996
Title:
[IBM 818946G, AD1981B (AC97), playback] No sound at all
To manage
Hi Raymond,
There is only one audio jack (stereo) on my computer.
Your explanation seems quite logical. This is most probably a bug of the latest
patch. How do you suggest that I go ahead with the question? I suppose I should
contact the creator of the patch and forward all necessary
there are two ports for ac97 codecs (eg. ad1985) without headphone
volume control
analog-output;output-amplifier-on:
analog-output;output-amplifier-off:
https://bugs.freedesktop.org/show_bug.cgi?id=42353
** Bug watch added: freedesktop.org Bugzilla #42353
https://bugs.freedesktop.org/show_bug.cgi?id=42353
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how many audio jacks do your thinkcenter m50 have ?
do you mean the mono internal speaker ?
Simple mixer control 'Master Mono',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 31
Mono: Playback 0 [0%] [-46.50dB] [off]
you
Thank you for the input Raymond. I am trying to use your observations to
experiment with the sound driver. Unfortunately without success. I have
not received any answer from ALSA developers or the patch developers
either. However, I followed your instructions and plugged earphones to
the computer.
http://www.mail-archive.com/mageia-dev@mageia.org/msg15043.html
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Title:
[IBM 818946G, AD1981B (AC97), playback] No sound at all
To manage
please note that ac97-spsa is s/pdif ac-link slot assignment
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'IEC958 Playback AC97-SPSA',0
Capabilities: volume volume-joined penum
Playback
Refer to the functional block diagram of ad1981b datasheet
headphone path: PCM + Headphone
lineout path: PCM + Master
internal chassis speaker path: PCM + Master mono
i don't understand why analog output path is a subset of headphones path
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Hi Raymond,
I presume that you have found some contradictions in the choice and
configuration of the sound driver. What do you suggest that I should do to
solve the problem or what further test should I perform to find out more about
the origin of the problem?
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it seem that the problem only occur on those ac97 codecs with headphone
volume control since my three sound cards with stac9704, stac9708 and
stac9721 still have analog ouput port in pulseaudio
i.e. removing analog output since it is subset of headphone only occur
with those on-board ac97 codec
do you mean you cannot switch to headphone port in sound setting of
unity session or gnome session?
the sound setting in unity is different from gnome
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snd-intel8x0 only support stereo and does not support mono
can you post the pulseaudio log?
1 card(s) available.
index: 0
name: alsa_card.pci-_00_1f.5
driver: module-alsa-card.c
owner module: 4
properties:
alsa.card = 0
snd-intel8x0 only support stereo and does not support mono
can you post the pulseaudio log?
1 card(s) available.
index: 0
name: alsa_card.pci-_00_1f.5
driver: module-alsa-card.c
owner module: 4
properties:
alsa.card = 0
Hi Dave,
Thank you for the response. The Master volume is up. I am not sure how to
toggle the digital/IEC958 switch using the space bar. I can use F6 to select
sound card, but there is only one choice, namely Intel ICH5.
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Hi Raymond,
I followed the instructions on Ubuntu Wiki to obtain the pulseaudio log which I
am attaching below. However, I do not understand the implications of your
observation. Can you please explain?
** Attachment added: pulseverbose.log
snd-intel8x0 does not support mono (i.e.
snd_pcm_hw_param_set_channels(1) failed),.but pa still probing path
analog ouput mono
you have to ask the developers at pulse-disc...@list.freedesktop.org and
alsa-de...@alsa-project.org
0.043| 0.000) D: [pulseaudio] alsa-util.c: Managed to open
snd-intel8x0 does not support mono (i.e.
snd_pcm_hw_param_set_channels(1) failed),.but pa still probing path
analog ouput mono
you have to ask the developers at pulse-disc...@list.freedesktop.org and
alsa-de...@alsa-project.org
0.043| 0.000) D: [pulseaudio] alsa-util.c: Managed to open
the analog-output-stereo profile for the line out jack is missing
( 0.056| 0.000) D: [pulseaudio] alsa-mixer.c: Removing path 'analog-output'
as it is a subset of 'analog-output-headphones'
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Hi Raymond,
I have passed the question from message #9 to pulseaudio and Alsa developers.
What should I do about analog output profile that you mentioned in #9?
Thanks in advance
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you have selected iec958-stereo as output
active profile: output:iec958-stereo+input:analog-stereo
sinks:
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Title:
[IBM 818946G, AD1981B
is it normal for pa server load the null sink when the server is
shutting down?
434| 0.000) I: [pulseaudio] module.c: Unloaded module-stream-restore
(index: #1).
( 285.434| 0.000) I: [pulseaudio] module.c: Unloading module-card-restore
(index: #2).
( 285.434| 0.000) I: [pulseaudio]
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