Am 11.06.2017 um 13:22 schrieb Ed Greshko:
On 06/11/17 18:40, Daniel Krebs wrote:
I'm struggling to configure the audio output of my Fedora 25
installation. I'd like to find a way to easily switch between front
audio (headphones) and line out in Gnome Shell without physically
plugging/unplugging any jacks.
So to clarify my setup is as followed (on ASUS PRIME B350-PLUS
Mainboard with Realtek ALC887 Audio Codec):
* Headphones connected to the front headphone jack of my case via
internal mainboard header
* Amplifier connected to green jack on the mainboards backpanel
When both, amp and headphones, are connected, the sound is only played
via headphones. In the Gnome audio settings the the line out output
device disappears and there is only the headphones output device.
Then I used alsamixer so change "Auto-Mute Mode" from [Enabled] to
[Disabled]. This way sound is played via amp and headphones
simultaneously. Gnome audio settings still shows only the headphones
as output device. I can than change Volume of "Headphones" and "Front"
via alsamixer separately to get any mute/unmute combination I want but
obviously this is neither comfortable nor compatible with any gnome
extensions that would let me change output easily (like
https://extensions.gnome.org/extension/906/sound-output-device-chooser/)
I generated more Information with the alsa-info.sh script which can be
found here:
http://www.alsa-project.org/db/?f=9c9fd41a57760353f5989f85ae5b8e9185d1c2f6
Any Ideas?
Personally, I like to use pavucontrol (Pulse Audio Volume Control).
I have 2 Audio Output Devices. One is the built-in audio device on my
mother board, the other HDMI audio out on my nVidia card. With
pavucontrol I can select which device I want a particular application to
use and I can mute and adjust volume individually. My headphones are
out of order at the moment due to the cord being chewed by a cat and I
don't need it....but if I plugged it in I would have a 3rd output device
and could assign it on a per application basis.
I tried that, but with the same results. Choosing Headphones plays Audio
on both, headphones as well as line-out. Choosing line-out plays only on
line-out. Whats strange is, that it shows line-out as "(unplugged)"
while actually it is plugged and plays sound..
DK
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