[alsa-devel] Strange sound of IDT 82hd206xx6 at font port in AC97 mode
lxr1234 at hotmail.com
Tue Feb 4 02:15:02 CET 2014
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于 2014年02月04日 07:08, Raymond Yau 写道:
> Check the front audio connector of your motherboard in the user
> Check the front audio panel specification of your computer chassis
> whether support Jack detection of headphone and mic
> Only a few multi channel AC97 2.3 codecs (e.g. ALC850) support
> jack detection and most AC97 front audio panel does not have jack
> detection circuit
>> I can't hear the sound in some part of a film and I can hear the
>> stranger accent of sound in the other part of a film(or a music).
>> But all the 7.1 channel in the back ports can output the sound
>> match my mircophone(all are the same).
> The front audio panel headphone share the front channel signal only
> when playing multi channel audio
> You need to use applications（e.g mplayer） which can down mix
> multi channel to stereo or select the stereo track instead of DTS
> of movie DVD when you are using headphone
I find the other thing, this headphone is for android mobile which
combine controller, headphone and speaker. If you don't plug it into
font port fully, it works.
I have tested a nornal headphone, it works too.
Maybe it cause by my hardware, it is not alsa's problem.
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