Am 17.12.2012 13:57, schrieb Raymond Yau:
>
> Hi everybody,
>
> I'm totally stuck with a sound problem I fail to debug on my own.
> Please tell me if my question should be directed to ubuntu or to
this list.
>
> My setup:
> Asus P5Q Motherboard with Realtec ALC1200 soundchip. Stereo speakers
plugged in to the rear output and headphone speaker/mic combo plugged
in to the front jacks. System: Ubuntu 12.10
> Desired behaviour: Sound is played back on headphones AND rear
speaker. Front mic should "just-work"
>
> Problem 2:
> This is the biggest problem.
> As soon as I plug in the front mic, Inside gnome-alsamixer the
volume for master, surround,center,lfe start to jump between on and
off. Why is the Front mic jack controlling these values? How can I
debug this behaviour? I just want them to stay the same, if the mic is
plugged in or not.
> Inside the gnome volume settings, the output port starts to jump
between "Analog Output" and "Analog Headphones"
>
This look like problem in Jack detection of the headphone and Mic Jack
of front audio panel
alsamixer -c0
Does the playback switch change rapidly on and off in alsamixer ?
Do your computer chassis have a hda front audio panel and you connect
them to the front audio connector of the motherboard according to the
user manual ?
Does it help if you disabled the automute switch ?
Thanks a lot. Your input helped me to at least work around the problem.
My chassis has a HDA and an AC97 connector. The HDA connector was
plugged in and correctly configured in BIOS.
I now use the AC97 connector (and changed the BIOS settings) and
everything is working properly.
Regarding your questions: Disabling automute didn't help. And yes, the
playback switch toggled rapidly.
One thing I didn't test: I mistakenly plugged the rear speaker into the
front channel jack (plugging the green connector into a green jack
seemed so obvious). I don't know is this is the same channel as the
headphone connector on the front panel...
In AC97 mode it doesn't matter if I use the front channel jack or the
rear channel jack (both at the rear of the computer) to connect my main
speakers.
Cheers Stefan
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