[alsa-devel] Auto-muting line-outs?

[Raymond Yau]

2010/8/3 David Henningsson <david.henningsson at canonical.com>

> I'm getting bug reports from downstream about auto-muting not working,
> and when looking at some of them I find that the reason is that they
> have a headphone + line-out combination instead of headphone + speaker.
>
> Looking at commits such as 2a2ed0df, this is intentional. I'm not sure
> what the majority of users want or expect in this case though, of course
> the users who like it the way it is, aren't raising their voices. :-)
>
> Anyway, for users that really want auto-muting for their line-outs,
> would a suitable workaround to recommend them, be to tweak
> user_pin_config, turning the line-out into a speaker-out, or would that
> have undesirable side effects?
>
>
headphone + speaker usually occur in laptop

headphone + line out occur in desktop

As HDA support multi streaming, the front panel green/pink jacks may be used
independent of the audio jacks in rear panels in desktop on some HDA codec