Bug 802316

I am able to use the mic through Google Chat in firefox by selecting "Internal Audio" after doing the following:

1) Add "load-module module-alsa-source device=hw:1,0,0" to /etc/pulse/default.pa before the line ".ifexists module-udev-detect.so"
2) Restart system.
3) Open alsamixer, make sure Internal Mic and Capture are toggled on and that both Mic Boost and Capture have high volumes.

When I use the mic like this, there is some noise heard from the speakers. Also the "Capture" item has to toggled on manually sometimes.

However, the mic should be automatically correctly detected through pulseaudio modprobe module. The mic works correctly in Linux Mint 12 by lowering the volume right channel of mic to 0. This solution isn't working in Fedora.

This method also worked for me. There is a little bit of crackling noise that I hear, but it is really minor and insignificant compared to it not working at all.

I have exactly the same hardware, and exactly the same problem. I've applied the workaround and will post back if it doesn't work for me.

I can confirm this bug in Fedora 17 and 18.
With alsa microphone on Acer Aspire One works fine. But gnome 3 doesn't work with alsa.
I can provide more information if it needed.
This bug is very annoying for me.

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This bug was fixed in pulseaudio upstream.
I've tested version 3.0 from this repo http://repos.fedorapeople.org/repos/rdieter/pulseaudio-backport/
Many thanks to Rex Dieter for repository.

I'm still seeing this in F19 with pulseaudio 3.0 and the workaround specified above does not fix it.

(In reply to Nathanael Noblet from comment #7)
> I'm still seeing this in F19 with pulseaudio 3.0 and the workaround
> specified above does not fix it.

Does the workaround at

http://ubuntuforums.org/showthread.php?t=1811178&page=23&p=12521216#post12521216

for for you? Namely, changing the Capture to Mic and then back to Internal Mic.

Incidently, I've also filed bug 1002826 because even if the workaround works to get the Internal Mic set as capture device, the Mic Boost keeps getting reset for me.

I never had an issue like that - for me the issue is strictly that the mic boost level isn't being used by pulse when setting the mic volume. Granted I had set via alsamixer the capture to internal mic right at the beginning because I was trying to get it working and didn't know about the Mic Boost issue at the time... however I haven't had to do any switching of anything in alsamixer since. I only have to increase the 'mic boost' channel volume and it works for me.

Created attachment 796559 [details]
Alsa Info for my hardware

Created attachment 796560 [details]
FIXED!!!!

Applying this patch to /usr/share/pulseaudio/alsa-mixer/paths/ fixes the underlying issue.

I was speaking with diwic in #pulseaudio. Apparently pulse assumes that internal microphones never need to use a mic boost. So this ignores the mic boost channel. With this patch, pulse uses the mic boost channel properly and even seems to restore it to a good volume on reboots. I've emailed diwic with the results and he mentioned he'd try to get it fixed in the kernel (not sure what that has to do with it as he got off IRC pretty quickly after the suggestion and request of an email)... However this patch makes the hardware work nicely here.

  24.548554] hda_codec: CX20588: BIOS auto-probing.
[   24.549081] ALSA sound/pci/hda/hda_auto_parser.c:393 autoconfig: line_outs=1 (0x1f/0x0/0x0/0x0/0x0) type:speaker
[   24.549095] ALSA sound/pci/hda/hda_auto_parser.c:397    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[   24.549103] ALSA sound/pci/hda/hda_auto_parser.c:401    hp_outs=1 (0x19/0x0/0x0/0x0/0x0)
[   24.549109] ALSA sound/pci/hda/hda_auto_parser.c:402    mono: mono_out=0x0
[   24.549114] ALSA sound/pci/hda/hda_auto_parser.c:406    inputs:
[   24.549122] ALSA sound/pci/hda/hda_auto_parser.c:410      Mic=0x1b
[   24.549128] ALSA sound/pci/hda/hda_auto_parser.c:410      Internal Mic=0x1e
[   24.549135] ALSA sound/pci/hda/hda_auto_parser.c:410      Mic=0x1a


auto Mic detection is automatically disabled by the driver when you are not dock Mic, Mic and int mic

do this computer really have two extra Mics and one into Mic ?



ARECORD

**** List of CAPTURE Hardware Devices ****
card 1: SB [HDA ATI SB], device 0: CX20588 Analog [CX20588 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: SB [HDA ATI SB], device 2: CX20588 Alt Analog [CX20588 Alt Analog]
  Subdevices: 2/2
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1




Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Mic' 'Internal Mic' 'Mic 1'
  Item0: 'Internal Mic'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Mic' 'Internal Mic' 'Mic 1'
  Item0: 'Internal Mic'
Simple mixer control 'Input Source',2
  Capabilities: cenum
  Items: 'Mic' 'Internal Mic' 'Mic 1'
  Item0: 'Internal Mic'

(In reply to Nathanael Noblet from comment #11)
> Created attachment 796560 [details]
> FIXED!!!!
> 
> Applying this patch to /usr/share/pulseaudio/alsa-mixer/paths/ fixes the
> underlying issue.
> 
> I was speaking with diwic in #pulseaudio. Apparently pulse assumes that
> internal microphones never need to use a mic boost. So this ignores the mic
> boost channel. With this patch, pulse uses the mic boost channel properly
> and even seems to restore it to a good volume on reboots. I've emailed diwic
> with the results and he mentioned he'd try to get it fixed in the kernel
> (not sure what that has to do with it as he got off IRC pretty quickly after
> the suggestion and request of an email)... However this patch makes the
> hardware work nicely here.

Nathanael,

since we are talking about internal microphone and that file analog-input-internal-mic.conf also has sections

  [Element Internal Mic Boost]

and

  [Element Int Mic Boost]

I wonder what their role is and if they shouldn't be more suitable for handling the mic boost of the internal microphone.

Lennart,

what is your opinion about the patch from comment 11? Can we see it included and fixed package released?

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Please reopen. This problem persists, even with Fedora 21.

The issue remains the mic boost. If I go in and use the Alsa mixer to set the mic boost, I can get it to work. However, the settings don't stick. I haved to repeat this process every time I want to use the microphone.

Pulse should be able to remember the settings once they are set!

Reopening per comment 16.

Adding back needinfo for comment 13.

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plan to fix it in a currently maintained version, simply change the 'version' 
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