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The title pretty much states my problem. I need to use VoIP services and thus I need a working microphone input.
My machine is a lenovo thinkkpad x200s.
I have evertyhing unmuted in alsamixer.
I can record a crackling noise, with the "Digital" control in alsa mixer set to nonzero. (Using arecord.)
Otherwise, I record nothing.
I have no problems with sound output.
I have tried pretty much that's written in the wiki.
The microphone works OK on other computers.
Any suggestions please? What else should I try or where to look to diagnose the problem?
output of lspci|grep Audio
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)Output of lsmod|grep snd:
snd_hda_codec_conexant 35994 1
snd_hda_intel 35309 0
snd_hda_codec 147474 2 snd_hda_codec_conexant,snd_hda_intel
snd_hwdep 6332 1 snd_hda_codec
snd_pcm 77765 2 snd_hda_codec,snd_hda_intel
snd_page_alloc 7234 2 snd_pcm,snd_hda_intel
snd_timer 18718 1 snd_pcm
snd 58950 7 snd_hwdep,snd_timer,snd_hda_codec_conexant,snd_pcm,snd_hda_codec,snd_hda_intel,thinkpad_acpi
soundcore 5418 1 sndOutput of amixer:
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined
Playback channels: Mono
Limits: Playback 0 - 74
Mono: Playback 74 [100%] [0.00dB]
Simple mixer control 'Headphone',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 74
Mono:
Front Left: Playback 74 [100%] [0.00dB]
Front Right: Playback 74 [100%] [0.00dB]
Simple mixer control 'Speaker',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 74
Mono:
Front Left: Playback 55 [74%] [-19.00dB]
Front Right: Playback 55 [74%] [-19.00dB]
Simple mixer control 'PCM',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 255
Mono:
Front Left: Playback 255 [100%] [0.00dB]
Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 4
Front Left: 2 [50%] [20.00dB]
Front Right: 2 [50%] [20.00dB]
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'IEC958 Default PCM',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Beep',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 3
Mono: Playback 0 [0%] [-18.00dB] [off]
Simple mixer control 'Capture',0
Capabilities: cvolume
Capture channels: Front Left - Front Right
Limits: Capture 0 - 80
Front Left: Capture 74 [92%] [0.00dB]
Front Right: Capture 74 [92%] [0.00dB]
Simple mixer control 'Auto-Mute Mode',0
Capabilities: enum
Items: 'Disabled' 'Enabled'
Item0: 'Disabled'
Simple mixer control 'Digital',0
Capabilities: cvolume
Capture channels: Front Left - Front Right
Limits: Capture 0 - 120
Front Left: Capture 41 [34%] [-9.50dB]
Front Right: Capture 41 [34%] [-9.50dB]
Simple mixer control 'Dock Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 4
Front Left: 2 [50%] [20.00dB]
Front Right: 2 [50%] [20.00dB]
Simple mixer control 'Internal Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 4
Front Left: 3 [75%] [36.00dB]
Front Right: 3 [75%] [36.00dB]Offline
To record microphone or sound coming through the sound card I use a virtual loopback device.
In your .asoundrc add something like
pcm.!default {
type asym
playback.pcm "LoopAndReal"
#capture.pcm "looprec"
capture.pcm "hw:0,0"
}
pcm.looprec {
type hw
card "Loopback"
device 1
subdevice 0
}
pcm.LoopAndReal {
type plug
slave.pcm mdev
route_policy "duplicate"
}
pcm.mdev {
type multi
slaves.a.pcm pcm.MixReale
slaves.a.channels 2
slaves.b.pcm pcm.MixLoopback
slaves.b.channels 2
bindings.0.slave a
bindings.0.channel 0
bindings.1.slave a
bindings.1.channel 1
bindings.2.slave b
bindings.2.channel 0
bindings.3.slave b
bindings.3.channel 1
}
pcm.MixReale {
type dmix
ipc_key 1024
slave {
pcm "hw:0,0"
rate 48000
#rate 44100
periods 128
period_time 0
period_size 1024 # must be power of 2
buffer_size 8192
}
}
pcm.MixLoopback {
type dmix
ipc_key 1025
slave {
pcm "hw:Loopback,0,0"
rate 48000
#rate 44100
periods 128
period_time 0
period_size 1024 # must be power of 2
buffer_size 8192
}
}Then
modprobe snd-aloopTurn you mixer controls up and find your mic amixer -l. Example to check it.
arecord -vv -fdat out.wavOr
ffmpeg -f alsa -i hw:0,0 -c:a copy -vn out.wavOffline
amixer -l? Doesn't do anything for me. I tried amixer -i. Or maybe aplay -l.
This is ~/.asoundrc because that's where I put it.
I have a CX20549 which is documented to be fuzzy with the mic jack, but it works flawlessly (owing to regimented standards) on OpenBSD. Anything I've tried on Linux so far, is a scratchy recording at best.
Last edited by nomorewindows (2013-08-14 17:17:10)
I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.
Offline
Sorry, that was wrong, I meant
arecord -lHave you tried making a virtual loopback device like above and using
arecord -vv -fdat out.wavYou should see the #### fluctuate as you speak into the mic. If not, then unmute and turn up your mic in alsamixer. That loopback device will allow you to capture your sound card and hear it at the same time. Another way to do it is to use a jumper from line out to line in on your sound device. You won't be able to hear it while you record though.
If your sound device works, then you can capture what's going through it. You'll need to determine which vitual device your mic is.
Example
arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 2: ALC662 rev1 Alt Analog [ALC662 rev1 Alt Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7Offline
I did it, but it still doesn't work, it is just a documented bug with the CX20549 under Linux, I don't know what OpenBSD is doing different, but it is clear as a bell. The ### don't move, so it's not getting any sound. On other sound cards, I get mostly static.
------ OpenBSD is using sndiod.-------
Last edited by nomorewindows (2013-11-25 14:52:56)
I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.
Offline
I also tried it and the #### doesn't move. (Actually it fluctuates in the range from 4% to 6%, but regardless if i speak or not.) Only quiet noise is produced in the output file. Capture controls in the alsamixer are up and there is no mute/unmute option.
Offline
(Actually it fluctuates in the range from 4% to 6%
Kamahl, amixer doesn't mention mic anywhere? I need to turn up the mic and mic boost to get response from the mic. Also need PCM and master up, and there is one named digital that has to be up also. It sounds like yours is working, you just need to turn some mixer controls up or unmute. Also gnome-alsamixer is a handy little GUI to use.
amixer snip
Simple mixer control 'Front Mic',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 0 [0%] [-34.50dB] [off]
Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Front Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%] [0.00dB]
Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Input Source',0
Capabilities: cenum
Items: 'Front Mic' 'Rear Mic' 'Line'
Item0: 'Rear Mic'
Simple mixer control 'Input Source',1
Capabilities: cenum
Items: 'Front Mic' 'Rear Mic' 'Line'
Item0: 'Rear Mic'
Simple mixer control 'Rear Mic',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 25 [81%] [3.00dB] [off]
Front Right: Playback 25 [81%] [3.00dB] [off]
Simple mixer control 'Rear Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%] [0.00dB]
Front Right: 0 [0%] [0.00dB]Offline
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