Ubuntu
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  1. Bug #101986
  2. Comment #61

Comment 61 for bug 101986

Revision history for this message
Daniel T Chen (crimsun) wrote : Re: [Bug 101986] Re: speakers are unmuted after resume from suspend while headphones are plugged in

On Fri, Oct 16, 2009 at 6:40 PM, Brandon Sandrowicz <email address hidden> wrote:
> Through searching I have found this: https://lists.ubuntu.com/archives
> /kernel-team/2006-March/000699.html
>
> There is no mention of *why* it needs to be blacklisted. Is it possible
> that due to changes in the past 3+ years this blacklisting is no longer
> necessary?  At one point I pulled down the alsa source and trying to
> grok it for some sort of obvious error, but I couldn't make heads or
> tails of it.

Well, I'll explain here (that's my patch):

Many of those AD19xxB codecs erroneously expose X Jack Sense mixer
elements via the driver. You have to disable them (or mute them using
alsamixer if they're exposed) to get ANY audible analog output. As far
as I know, that remains the case and is completely orthogonal to your
issue, BUT I can't tell without seeing the contents of your
/proc/asound/card*/*codec*/* before and after the second suspend.