[alsa-devel] [PATCH 08/10] ALSA: hda - Add support for Line-Out automute to Realtek auto-parser

David Henningsson david.henningsson at canonical.com
Sat Apr 30 08:52:58 CEST 2011

On 2011-04-29 19:18, Takashi Iwai wrote:
> By popular demands, I add the functionality to mute / unmute the
> line-out jacks per the headphone plug / unplug.  For achieving this
> and keeping the compatibility with the old behavior, the new mixer
> enum "Auto-Mute Mode" is added.  With this, user can control the
> auto-mute behavior either disabled, speaker-only or lineout+speaker.

Hi Takashi,

Great to see these improvements! I have a question about this patch:

There are three ways we can auto-mute:

Headphones might mute Internal Speakers.
Headphones might mute Line out.
Line out might mute Internal Speakers.

Are we considering the third option here or is that still unsupported?

Also, it might be slightly confusing for the end-user to have options 
that are irrelevant, e g if there are no internal speakers (or line-out 
for that matter), that option will still show up. Right?

David Henningsson, Canonical Ltd.

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