[alsa-devel] ALC892 optical SPDIF not working

[Takashi Iwai]

At Fri, 30 Jul 2010 13:32:40 +0200,
Manuel Lauss wrote:
> 
> Hi Takashi,
> 
> On Fri, Jul 30, 2010 at 12:24 PM, Manuel Lauss
> <manuel.lauss at googlemail.com> wrote:
> > On Fri, Jul 30, 2010 at 11:13 AM, Takashi Iwai <tiwai at suse.de> wrote:
> >> At Fri, 30 Jul 2010 10:00:13 +0200,
> >> Manuel Lauss wrote:
> >>>
> >>> Hello,
> >>>
> >>> I have a Gigabyte 890GX-based board with an ALC892 codec.
> >>> The optical SPDIF output does not work at all (i.e. no red light on
> >>> the cable), and the kernel prints
> >>> "ALSA hda_codec.c:407: Too many connections"
> >>> messages whenever sound is played (analog works, but I need
> >>> digital).
> >>
> >> Could you try the latest alsa-driver-snapshot?
> >>    ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz
> >>
> >> I fixed a few things regarding digital I/O handling of Realtek codecs
> >> now, and fixed the too-many-connections bug there, too.
> >
> > I pulled from your tree: AC3/DTS passthrough works now, however "normal" audio
> > only works with 48kHz rate.
> 
> Is there a way to insert an initial playback delay?  Under linux, the
> first 2-2.5 seconds
> of anything played are just silence; on windows audible playback
> starts immediately.

It's the time for synchronization your digital receiver takes, I guess.
Maybe changing SPDIF status makes it resync, which happens at each
opening / closing the stream.


Takashi