[alsa-devel] problem with the driver for ALC3260 sound chip

[Takashi Iwai]

On Wed, 23 Nov 2016 21:42:26 +0100,
marve wrote:
> 
> Dear all,
> 
> Here a rephrase of my issue with TOSLINK SPDIF output of my Dell XPS One
> 2710 system running Linux.
> 
> 
> First: I have tried other hardware with my DTS receiver and the receiver
> worked fine. Also I have checked the HDMI output of my computer, also
> working!
> 
> Second: The SPDIF output worked fine on a Windows 7 installation with
> PCM and DTS. I stopped using Windows privately.
> 
> Most success I got with debugging the SPDIF TOSLINK is:
> - With the HDA Intel sound cards Jack Retasking tool:
>      - Check Showing unconnected pins. Actually, the TOSLINK is
> connected but shows "not connected" in the tool.
>      - Manually override Pin ID 0x1e
>      - Select "SPDIF Out" and "Apply Now"

You're sure that this pin is correct?  I mean, did you get *any*
signal from the SPDIF I/O by enabling this pin?


> - Then with PulseAudio Volume Control:
>     -  In the Configuration Tab, select "Profile: Digital Stereo
> (IEC958) Output"
>     -  In the Output Devices "Digital Output (S/PDIF)" appears and is
> the only option and in the advanced tab PCM, DTS, AC3, MPEG, EAC3, AAC
> are selected
> 
>  - I check if in alsamixer tool that the SPDIF channel is unmuted
> 
> When I play a sound, the vumeter of PulseAudio Volume Control does
> react, see png attachment (https://postimg.org/image/5tu4rax9t/), but my
> external DTS receiver doesn't get input!

First off, you should try the normal audio PCM stream instead of DTS
or such.  It's possible that the SPDIF status bits aren't properly set
and the receiver doesn't accept the non-audio signals.

And, as a primary testing, please test with aplay.  You can pass
-Dspdif or -Dspdif:1 option to transmit over the SPDIF device.

Last but not least, check the IEC958 status bits of the assigned PCM.
You can use iecset program in alsa-utils for checking / setting the
bits.


Takashi