[alsa-devel] Strange sound of IDT 82hd206xx6 at font port in AC97 mode

[Takashi Iwai]

At Wed, 5 Feb 2014 15:57:21 +0800,
Raymond Yau wrote:
> 
> http://www.alsa-project.org/db/?f=ce795f0f8e31b9eb5e35cc2fed572290d14b1cda
> 
> 
> >>>
> > >>>
> > >>> Simple mixer control 'Swap Center/LFE',0 Capabilities: pswitch
> > >>> pswitch-joined penum Playback channels: Mono Mono: Playback
> > >>> [off]
> > >>>
> > >>>
> > >>>
> > >>> Do this switch change the output of center and lfe when you
> > >>> run
> > >>>
> > >>> speaker-test -c 6 -t wav -D hw:0,0
> > >>>
> > >> I only hear the font left and font right in both side of my
> > >> headphone(the one for android)
> > >>> seem that your are not using latest alsa driver
> > >> The alsa driver? Well, shall I try the latest kernel?
> > >
> > > Do the channel swap at the orange rack at rear panel ?
> > >
> > > Do you have a speaker to test ?
> > >
> >
> 
> 
> > At the front panel, not swap, I heared front left and front right in
> > both side.
> > At the rack panel, swaped.
> > For the normal headphone(speaker)
> > The font left and font right is switch the side.
> >
> 
> Fix the device part of four line out from speaker to line out for ECS
> A780GM-A
> 
> No more "Rear Mic Jack Mode" , "Front Jack Mode" and "Line Jack Mode" after
> this fix when there is no internal speaker
> 
> those jack mode switches are redundant when the computer have both Line in
> jack and Mic jack

Could you give a proper patch that can be merged to upstream?
See Documentation/SubmittingPatches.


thanks,

Takashi