[pulseaudio-discuss] [PATCH 5/6] alsa-mixer: Disable line-out if headphone jack is plugged

[Sjoerd Simons]

On Sun, 2014-11-02 at 18:04 +0800, Raymond Yau wrote:
> >
> > Line-out gets muted when headphones are plugged in on HDA cards, encode
> > this in the line-out path so pulse can match that state.
> > ---
> 
> How about those notebooks with four jacks : hp, line out,  line in and
> mic,  5.1 intermal speakers
> 
> e.g. Clevo P180HMx with alc892 support external 7.1 speaker using four jacks
> 
> https://launchpadlibrarian.net/152871682/Card0.Codecs.codec.0.txt

Crazy machines :).. But for this you wouldn't be using the line-out path
as far as i know. 

Tbh. while hardware-wise those machines clearly have the capabilities,
does this actually work on linux atm without changing the pin
configuration all around?

Tbh, these kind of problems all come down to the fact that essentially
pulse is second-guessing what the kernel is doing. This patch, in the
end, is another heuristic that makes the pulse state match the kernel
state...

-- 
Sjoerd Simons <sjoerd at luon.net>