Comment 35 for bug 477226

Luke, thank you for finding time to work on this bug.
I also tried adding options snd-hda-intel model=lenovo-x200 to my alsa-base.conf
After that I run sudo depmod -a and rebooted.
Like Adam, nothing happened. When I plugged headphones, everything was as it was before.
I dont have external microphone but I suppose plugging headphones into microphone jack should have the same effect as plugging external microphone.
Nothing happened after that. My internal microphone was still recording sound.
Hope that helps.