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ate88
n00b
Joined: 14 Apr 2017
Posts: 3
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 Posted: Fri Apr 14, 2017 3:56 pm Post subject: Problem with audio - ALSA woes |
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First I'll say that I'm a sound noob. Yesterday I managed to get sound working on my Thinkpad X60, but I want to set up mpd to listen to an http stream through an ssh tunnel. I added the "lame" useflag (for use as an en/decoder in the stream; not sure if this is necessay) and reemerged mpd (which pulled in lame). Now mpd and firefox make no sound, though my terminal bell works fine.
That's the whole story as far as I know. Maybe lame didn't break anything, but it worked when I went to sleep, and after waking and emerging lame, sound doesn't work.
I've checked all channels in alsamixer and have restarted the machine.
Edit: I forgot to say: I removed the lame useflag from mpd, reemerged mpd, depcleaned, and restarted. No effect.
Devices:
| Code: | $ lsmod
Module Size Used by
xts 2439 4
dm_crypt 17533 2
dm_mod 80595 5 dm_crypt
snd_hda_codec_generic 49695 1
iwl3945 50557 0
iwlegacy 42604 1 iwl3945
mac80211 492153 2 iwlegacy,iwl3945
snd_pcsp 6549 0
snd_hda_intel 18328 5
snd_hda_codec 72633 2 snd_hda_intel,snd_hda_codec_generic
snd_hda_core 44356 3 snd_hda_intel,snd_hda_codec,snd_hda_codec_generic
snd_pcm 69850 5 snd_hda_intel,snd_pcsp,snd_hda_codec,snd_hda_core
cfg80211 427850 3 mac80211,iwlegacy,iwl3945
snd_timer 15997 2 snd_pcm
e1000e 158492 0
thinkpad_acpi 58090 0 |
What alsa sees:
| Code: | $ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=Intel
HDA Intel, Generic Analog
Default Audio Device
sysdefault:CARD=Intel
HDA Intel, Generic Analog
Default Audio Device
front:CARD=Intel,DEV=0
HDA Intel, Generic Analog
Front speakers
surround21:CARD=Intel,DEV=0
HDA Intel, Generic Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Intel,DEV=0
HDA Intel, Generic Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
HDA Intel, Generic Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
HDA Intel, Generic Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
HDA Intel, Generic Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
HDA Intel, Generic Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
default:CARD=pcsp
pcsp, pcsp
Default Audio Device
sysdefault:CARD=pcsp
pcsp, pcsp
Default Audio Device
front:CARD=pcsp,DEV=0
pcsp, pcsp
Front speakers |
Any ideas? Thanks in advance. |
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Sadako
Advocate
Joined: 05 Aug 2004
Posts: 3792
Location: sleeping in the bathtub
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| Posted: Fri Apr 14, 2017 8:12 pm Post subject: |
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I think you need to determine if sound works with something much simpler than mpd or firefox first, aplay will work for wav files, or mplayer/mpv for most audio formats, or whatever else you may already have installed.
Are you using pulseaudio or not?
lame should only be needed if mpd on your thinkpad will be the source of the streeam, ie only needed for encoding.
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"You have to invite me in" |
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ate88
n00b
Joined: 14 Apr 2017
Posts: 3
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| Posted: Fri Apr 14, 2017 9:30 pm Post subject: |
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| Sadako wrote: | | I think you need to determine if sound works with something much simpler than mpd or firefox first, aplay will work for wav files, or mplayer/mpv for most audio formats, or whatever else you may already have installed. |
Well, speaker-test doesn't work. I think that's as simple as it gets?
| Sadako wrote: | | Are you using pulseaudio or not? |
Nope, just alsa.
| Sadako wrote: | | lame should only be needed if mpd on your thinkpad will be the source of the streeam, ie only needed for encoding. |
Good to know.
Edit: just tried mpv, no output. |
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roki942
Apprentice
Joined: 18 Apr 2005
Posts: 285
Location: Seattle
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| Posted: Fri Apr 14, 2017 10:13 pm Post subject: |
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This is a very common trap when first using alsa.
| Quote: | Mixer
If you can't hear anything, the output channels may be muted. Unmute the channels with the desktop environment's mixer or with alsamixer by selecting the appropriate channels and pressing the M key to mute or unmute:
user $alsamixer
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https://wiki.gentoo.org/wiki/ALSA#Mixer |
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ate88
n00b
Joined: 14 Apr 2017
Posts: 3
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| Posted: Sat Apr 15, 2017 12:16 am Post subject: |
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| roki942 wrote: | | This is a very common trap when first using alsa. |
Like I said, I've checked all of the channels. I've even made sure that they are unmuted using amixer.
What would really help me is a good resource on how to troubleshoot sound issues. All of the documentation I have found has been unusually bad. And most guides are simply a list of fixes for one-off issues.
Edit: I've managed to get audio working on another Thinkpad. I'm not sure how I broke things here, but I don't think it's worth anyone's time. Thanks for the help so far. |
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twalter
Tux's lil' helper
Joined: 07 Apr 2004
Posts: 103
Location: Churchill, Canada
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| Posted: Tue Apr 25, 2017 4:55 pm Post subject: |
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| The Thinkpad has ACPI Mute and there was a regression in older kernels. What version are you running? |
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