Ubuntu doesn't detect Mic2 is plugged in, also not amplified. This can be done manually, but not very userfriendly.

Bug #656570 reported by G4JC on 2010-10-07
This bug affects 1 person
Affects Status Importance Assigned to Milestone
alsa-driver (Ubuntu)

Bug Description

When running system test, when you speak into the Microphone, I use Mic2 which is on the front of my PC. Mic1 is in the back. In order to get system test to work we must change the recording device from the sound properties to Mic2, then amplify by about 50%. Works flawlessly after this. A fairly trivial bug, but might confuse newbies since it doesn't auto-detect.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: alsa-base 1.0.23+dfsg-1ubuntu4
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic
Uname: Linux 2.6.35-22-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
 Cannot stat file /proc/4538/fd/35: Stale NFS file handle
 Cannot stat file /proc/4538/fd/39: Stale NFS file handle
 Cannot stat file /proc/4538/fd/40: Stale NFS file handle
                      USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 3104 F.... pulseaudio
 Card hw:0 'Intel'/'HDA Intel at 0xfbff8000 irq 54'
   Mixer name : 'Realtek ALC888'
   Components : 'HDA:10ec0888,1458a002,00100001'
   Controls : 38
   Simple ctrls : 21
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfbbfc000 irq 55'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100100'
   Controls : 4
   Simple ctrls : 1
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
CheckboxCommand: alsa_record_playback
CheckboxData: Needs to detected when heaphones are in Mic2, then amplify...
 Connect a microphone to your microphone port. Click the Test button, then speak into the microphone. After a few seconds, your speech will be played back to you.

 Did you hear your speech played back?
CheckboxTest: alsa_record_playback_external
Date: Thu Oct 7 18:30:05 2010
LiveMediaBuild: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
PackageArchitecture: all
SourcePackage: alsa-driver
dmi.bios.date: 05/04/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: FB
dmi.board.name: EX58-UD3R
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrFB:bd05/04/2009:svnGigabyteTechnologyCo.,Ltd.:pnEX58-UD3R:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnEX58-UD3R:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: EX58-UD3R
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

G4JC (gaming4jc2) wrote :
Daniel T Chen (crimsun) wrote :

This feature is only available for certain codecs. Also, consider the use case for having both Mic1 and Mic2 active. How should PulseAudio act in that instance?

Changed in alsa-driver (Ubuntu):
importance: Undecided → Wishlist
Raymond (superquad-vortex2) wrote :

there are two analog capture devices

card 0: Intel [HDA Intel], device 0: ALC888 Analog [ALC888 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC888 Digital [ALC888 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 2: ALC888 Analog [ALC888 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

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