22631Re: [linux-dell-laptops] Re: AC3 pass-through with I8200
- Jan 7, 2004If you use alsa you can use S/PDIF output. You can not see it from many
mixers but of you use the console based alsamixer you will see two new
items. IEC958 IEC958 P
On Tue, 6 Jan 2004, Max Baker wrote:
> Two things :
> 1. Where is there and S/PDIF output on this machine??
> 2. DON'T buy the Extigy. I have an i8200 as well and have had nothing
> but problems with the extigy. In windows and especially in Linux. In Windows
> I get random lockups, in Linux I wrestle with the drivers for days and
> eventually it works, but then locks up. Unplug the Extigy and everything is
> fine. I believe it has somethign to do with either A) The Extigy is crap
> (they lied on the box, it doesn't do 24 bit AT ALL!) or B) The USB Chipset on
> the i8200 doesnt like the Creative, and/or is crap. Kinda the same vein as
> all the USB mouse problems people have with our machines.
> Again, I emplor you, find another sound card, not the extigy. And I would
> die to know how to get an s/pdif output from this machine ;-)
> > Message: 20
> > Date: Fri, 02 Jan 2004 20:31:37 +0100
> > From: Raffael Herzog <herzog-lists@...>
> > Subject: AC3 pass-through with I8200
> > Hi,
> > I've got S/PDIF working correctly with my I8200, which is already a great
> > improvement of sound quality over the analog output. However, I often
> > watch DVDs and would like to have true 5.1 sound for this (currently, Xine
> > downmixes it to Pro Logic to send it to the receiver which in turn upmixes
> > it back to 5.1). OK, the sound card can't encode 5.1 itself, but it *can*
> > do AC3 pass-through to pass the decoding to the receiver - which would
> > actually be the perfect solution, as this would also give me EAX, if
> > available on the DVD.
> > So I tried to enable AC3 pass-through in the Xine settings. And it
> > actually seems to work somewhat - but only somewhat. I get some sound on
> > the internal speaker which I suppose is the encoded AC3 signal, it sounds
> > very much like an "analogised" digital signal (similiar to a modem).
> > However, I can't use it on the analog output, I need it on the S/PDIF
> > output. Looks like some routing problem to me, i.e. the signal is simply
> > routed to the wrong output.
> > Did anyone get this last step working, i.e. routing the AC3 signal from
> > the DVD correctly to the S/PDIF output? I know it *can* work because with
> > Dell software, it does. Maybe some tweaking in the .asoundrc is already
> > enough, or maybe, some small peace of software is needed to route the
> > signal correctly?
> > Any advice would be appreciated...
> > TIA,
> > Raffi
> > PS. I'm considering buying a SoundBlaster Extigy, but it's a bit of an
> > overkill: I don't do any gaming, I really don't need 5.1 sound for
> > anything other than watching DVDs, and the internal sound card can do
> > that. With an Extigy I'd end up in a configuration hell because of two
> > soundcards (one of which isn't always present), two sound systems (ALSA
> > and OSS) and unofficial kernel drivers.
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