[alsa-devel] 2.1 audio not working in Kubuntu 13.10

[Tomas Black]

Hello Raymond,


thanks for your answer.

I checked the Dell thread and the Realtek datasheet. I see it's possible to
connect to external 5.1 (or 2.1) sound system.

However I want to make it work with the *internal *2 speakers + *internal *
subwoofer.

I've read tons of links and similar threas, it seems it is not possible
under linux :-(

Regards,


Tomas Black


On Sun, Apr 6, 2014 at 10:15 PM, Raymond Yau <superquad.vortex2 at gmail.com>wrote:

>
>
>
> 2014-04-03 2:44 GMT+08:00 Tomas Black <tomas.black at gmail.com>:
>
> Dear friends,
>>
>>
>> I have a Dell L702X laptop which comes with a 2.1 sound configuration - 2
>> speakers + subwoofer from JBL. Sound is suberb in Windows, but  I can't
>> get
>> the subwoofer to work in Linux!
>>
>
>
> http://www.realtek.com/products/productsView.aspx?Langid=1&PFid=37&Level=5&Conn=4&ProdID=252
>
> Take a look at datasheet,
>
> ALC655 is a 5.1 codec and a MONO out
>
> either the subwoofer is at the MONO node 0x17  or the right or left
> channels of the other unconnected stereo nodes
>
> try hdajackretask to change the pin default of node 0x17 to [Fixed]
> Speaker at Int
>
>
> http://en.community.dell.com/support-forums/laptop/f/3517/t/19440542.aspx
>
> seem support 5.1 using two headphone jacks and mic jack
>
>