[SOLVED] cannot record with microphone

Tofu_Bone · 2017-03-13 04:32:14

I run in to problem when trying to get the mic working.
I tried to used another microphone which work on other computer.
I ran alsamixer and unmute CAPTURE and also other channels
I set my default sound card as the card with capture.

[yat@yat626 alsa]$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3236 Analog [ALC3236 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

 [yat@yat626 alsa]$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3236 Analog [ALC3236 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

 yat@yat626 alsa]$ arecord -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
default:CARD=PCH
    HDA Intel PCH, ALC3236 Analog
    Default Audio Device
sysdefault:CARD=PCH
    HDA Intel PCH, ALC3236 Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, ALC3236 Analog
    Front speakers

I tried to test my microphone with

 arecord -vv -f dat /dev/null

, but there is no sound recorded.

any idea what is wrong here?

Edit: adding some information: my card is HDA Intel PCH, with Realtek ALC 3236 chip

Last edited by Tofu_Bone (2017-03-14 03:51:03)

mpan · 2017-03-13 05:05:32

It is possible that you have missed some of the knobs: if alsamixer can’t fit them in a window, it puts them off screen and puts just a tiny arrows on the edge to indicate that. Check if you don’t have more of the channels in the “capture” section. Unmuting “CAPTURE” and a selected “[Xyz-ish] Microphone” should be enough.

Don’t forget too that capture channels also have volume. Maybe it’s at 0 for you?

Tofu_Bone · 2017-03-13 05:19:18

Thanks for the reply.

In the alsamixer, I pressed F4 and show only the "capture" section, but there is no missing knob, there are 3 knob , Mic boost, Capture and digital, all unmuted and with volume around 50. "CAPTURE" on Capture know. All of the knob are open and with around 50 volume.

Last edited by Tofu_Bone (2017-03-13 05:19:57)

mpan · 2017-03-13 08:21:59

Therefore it’s not an alsamixer issue. Something is wrong, because you should have at least one [external] input (like “Mic”, “Rear Mic” or something like that). ALSA seems to not see the microphone at all.

I assume that you have already checked the microphone troubleshoting section of the wiki.

I can see in your output that you have PulseAudio installed. Possible that’s the issue? Try opening pavucontrol and see if you don’t have something muted there.

Tofu_Bone · 2017-03-13 17:08:36

I do have a a "Mic" one in alsamixer, but it is located at the playback section, not Capture section.
I have checked to wiki and tried multiple things, without luck.
I also open pavucontrol , but there is nothing muted.

Tofu_Bone · 2017-03-14 03:50:38

After digging around the internet for answer, I come across a post about this ALC 3236 chip. This chip need to turn "Mic Boost" to 0 in order to record something.
But there is another problem, is that turn "Mic Boost" down will cause low volume. There is also static noise with the recording.
I guess I should open another post.

Arch Linux

#1 2017-03-13 04:32:14

[SOLVED] cannot record with microphone

#2 2017-03-13 05:05:32

Re: [SOLVED] cannot record with microphone

#3 2017-03-13 05:19:18

Re: [SOLVED] cannot record with microphone

#4 2017-03-13 08:21:59

Re: [SOLVED] cannot record with microphone

#5 2017-03-13 17:08:36

Re: [SOLVED] cannot record with microphone

#6 2017-03-14 03:50:38

Re: [SOLVED] cannot record with microphone

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