<p><br>
><br>
> A stationary computer usually has headphone jack(s) and line out jacks.<br>
> In some cases analog-output.conf will be a subset of<br>
> analog-output-headphones.conf, causing line outs to be unusable (because<br>
> headphones are unplugged).<br>
><br>
> This late in the cycle, this was the safest way I could think of to try<br>
> to fix this for a particular computer. In later versions of PulseAudio<br>
> we could consider making a dedicated line out path instead, and have<br>
> proper jack detection there.<br>
></p>
<p>How about emulated hda codec in virtualbox/qemu which line out does not has jack detection ?</p>
<p>The other cases are those notebook and think center which have headphone, line out and internal speakers<br>
</p>