<p><br>
> ><br>
> > I'm using an ALC899 codec with 6x3.5mm jacks and so far, I've been<br>
> > using sink-remap [1], which worked fine, 5.1 sound being remixed to<br>
> > 2.0 as expected.<br>
> > <br>
> > However, there are two problems with this:<br>
> > - even though I select the Stereo sink as output in pavucontrol, the<br>
> > sound is also playing via my Surround sink<br>
> > - the two sinks have their volumes linked.<br>
><br>
> So the setup is exactly as instructed in the Arch wiki? Two things seem<br>
> to be wrong in the instructions (I don't know how that could be - did<br>
> the author not test what he or she wrote to the wiki?): the "remix"<br>
> option should be "no" in both cases. Otherwise anything played to the<br>
> stereo sink will be upmixed to all channels of the 7.1 sink.<br>
><br>
> The second thing is that if the stereo and 5.1 sinks are not supposed<br>
> to use overlapping channels, then the channel maps are wrong, because<br>
> both sinks use the front-left and front-right channels of the master<br>
> sink. The stereo sink should have "side-left,side-right" in the<br>
> "master_channel_map" parameter.<br>
><br>
> > Apparently, I could set my card to 5.1 and the grey socket would be<br>
> > automatically treated as a 2.0 device, however the behavior is<br>
> > completely the same as my earlier setup, including the caveats<br>
> > described above<br>
> ><br>
> > I would like to split them in separate devices as follows:<br>
> ><br>
> > - two sinks visible, Stereo (for the 2.0 amplifier) and Surround (for<br>
> > my 5.1 headset with a built-in amplifier), physical 7.1 device hidden<br>
> > in pavucontol/KDE's plasma-pa widget<br>
><br>
> Hiding the 7.1 sink is not currently possible.<br>
><br>
> > - for the Stereo sink, I want the LFE to be mixed into the stereo<br>
> > channels when downmixing, but left untouched for stereo content (just<br>
> > like it did with PA6.0). Same for rear and center channels.<br>
><br>
> This does not require any changes to anything. As long as remixing is<br>
> enabled in daemon.conf (like it is by default), playback streams with<br>
> LFE will be downmixed to have LFE in the left and right channels, and<br>
> if the playback stream doesn't have an LFE channel, then there's<br>
> nothing to do (leaving LFE "untouched for stereo content" doesn't make<br>
> sense to me, because there's nothing to leave untouched).</p>
<p>The easy way is to use hdajackretask your grey line out as internal speaker, there will be headphone, 5.1 line out jacks and stereo speaker</p>