Re: Control audio output between Line Out and Headphones

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On 12 June 2017 at 19:19, Daniel Krebs <mailinglist@xxxxxxxxx> wrote:
> Am 12.06.2017 um 01:15 schrieb Ed Greshko:
>>
>> 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset
>> High Definition Audio (rev 05)
>> 01:00.1 Audio device: NVIDIA Corporation GK106 HDMI Audio Controller
>> (rev a1)
>>
>> I have my Bose speakers plugged into the line-out on the back-panel of
>> my tower.  In pavucontrol it shows as plugged in.  When I plugin a set
>> of headphones into the headphone jack at the front of the tower the
>> speakers cut out and the headphones are active and show active in
>> pavucontrol.
>>
>> http://tinyurl.com/yave5h2g  has some screenshots which I think are self
>> explanatory.
>> I think it is the job of the HW to cut out the Line output when the
>> headphones are inserted and inform the SW.  FWIW, I'm also using KDE but
>> it shouldn't make a difference.
>
>
> Well, I certainly agree that it is nice to have such a feature. My Problem
> is, that the 3.5 mm connectors tend to wear out quiet fast so I'd like to
> not pull them in and out multiple times a day...
> A bad contact gets very annoying and is not good for amp or headphones
> either I think (you know, the loud crack when you put in the plugs while the
> amp is running)
>
[...]

A crude/basic workaround would be to use something like this command:
$ amixer -q set Headphone toggle && amixer -q set Front toggle

This assumes you have one of them muted and the other unmuted and
it'll simply toggle their states.

You can assign this command to a _custom_ shortcut in the
gnome-control-center -> Keyboard and assign some hotkey or key combo
to invoke it.

-- 
Ahmad Samir
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