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Problem: Microphone in or Line in microphone audio is instantly captured and sinked to the local speaker, cause horrible echo problem

About my system: (NO PulseAudio used (cause its always crash and unstable for my system/hardware, so auto killed and never used)

I have ALSA 1.0.25 version running in Ubuntu 12.04 / 64-bit, with random kernel installed:

kernel 3.5.0-17-generic
kernel 3.8.x
kernel 3.11.x

But the echo problem is not resolved after trying all kernel.

So, last option left now is to use ALSA 1.0.27 to see if that solves the problem. Is there any away to use ALSA 1.0.27 from any PPA to install in the Ubuntu 12.04? (without making it from source, to avoid breaking other packages and dependencies)


wget http://www.alsa-project.org/alsa-info.sh -O alsa-info.sh && bash alsa-info.sh

# after making settings
$ chmod -R 777 /var/lib/alsa/asound.state # to enable read/write access
$ alsactl store 

# on every reboot 
$ alsactl restore
share|improve this question
The ALSA drivers are part of the kernel, and kernel 3.11 is newer than ALSA 1.0.27. Please show the output of amixer scontents. –  CL. Oct 24 '13 at 7:01

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