[alsa-devel] 7.1 surround not working on ALC892/ Ubuntu 13.04
subodh.austin at gmail.com
Mon Mar 3 07:23:06 CET 2014
Thanks a lot for the solution.
It works as expected.
Appreciate you taking time to post the solution.
On Sun, Mar 2, 2014 at 9:34 AM, Raymond Yau <superquad.vortex2 at gmail.com>wrote:
> > I am unable to get 7.1 surround sound option on my system.
> > Alsamixer is not giving me any option to choose 8 channels.
> > Surround 5.1 is working correctly.
> > I am not sure how to configure the system to get the 8 channel setup
> >Distributor ID: Ubuntu
> >Description: Ubuntu 13.04
> >Release: 13.04
> >Codename: raring
> >Attaching all the sound-card information I could gather from the system.
> >Please let me know in case any additional information is needed to debug
> the issue.
> > user1 <at> user1-MI970VF:~/ufouser$ cat /proc/asound/card0/codec#* |
> grep Codec
> > Codec: Realtek ALC892
> For motherboard with 3 audio jacks at rear panel and 10 channels HDA codec
> you need to retask headphone at front panel as side line out
> the easy way is to use hdajackretask (advanced override) or early patching
> to retask
> if green line out at rear panel has sequence 1 in pin default.
> 1) blue line jack as Line Out with sequence 2
> 2) pink mic jack as Line Out with sequence 3
> 3) front panel headphone to Line out with sequence 4
> the three retasked line out should have same default association as the
> green line out
> in theory, it is possible to add the retask of headphone to line out into
> the existing channel mode (8ch) when the codec has extra DAC and volume
> control using multi_Ios pin butt need to hack the jack detection control,
> disable auto mute and independent headphone when the headphone is retasked
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