snd-hda-intel internal microphone not working, sound recording not working at all

Bug #259877 reported by sibidiba
2
Affects Status Importance Assigned to Milestone
alsa-driver (Ubuntu)
New
Undecided
Unassigned
Declined for Intrepid by Brian Murray

Bug Description

It seems that for many models snd-hda-intel does not get the internal microphone working: see for example bug #141445 or bug #63401. It also does not work for me (Lenovo Thinkpad R61i, Conexant CX20549 (Venice)).

$ lspci -vvnn
http://launchpadlibrarian.net/16966343/lspci

$ dmesg
http://launchpadlibrarian.net/16966399/dmesg

On some models not even an external microphone is working, as it comes with a _HUGE_ noise and extremely jerky sound. See bug #69306 .

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