I can not enable the +20 boost for my microphone using alsamixer in the 64 bit Beta 12.04. AlsaMixer identifies the device as NVidia CK804 and identifies the "Mic Boost" setting as on/off +20, but the up/down arrows do not change the setting. With the gain on the microphone set to the maximum, it is barely audible and effectively unusable. Is there a workaround?
Item: Mic Boost (+20dB) [Off]
I have this working well enough now. I installed the Gnome Alsa Mixer from the Ubuntu Software Center (USC); I believe this can be accomplished from the command line as
. The setting is available from that mixer.
sudo apt-get install gnome-alsamixer
On a related note, I found that (at least in 12.04) Skype:
- uses the pulse audio server, which you may need to install
- the volume settings on the microphone are very different between pulse audio an the sound recorder app
- Skype does not sign out properly if I just close the app and I need to sign back in under Windows to reset the condition.