Re: HDMI v. ICH8 on Dell XPS M1330

[Takashi Iwai <tiwai@suse.de>]

At Fri, 29 Feb 2008 06:48:12 -0800,
Tellman, Steven wrote:
> 
> Takashi,
> 
> 	On the XPS M1330 (and XPS M1530) the SPDIF pin of the 9228 is
> hooked to the HDMI as these laptops were made before the HDMI portion
> had their own audio codec portion of the transceiver. So technically, it
> should be pretty simple ;) 

Thanks, that's good to know.

Do you know any other issues that stop HDMI audio working?  IIRC, ATI
board has a h/w switch in the video side to enable/disable its
graphic-board HDMI, for example...

Also, does STAC9228 codec support verbs for controlling HDMI,
e.g. converter channel count (F2Dh, 72Dh) ?


Takashi

> 
> IDT PC Audio Demo/Linux/Test
> 
> -----Original Message-----
> From: Takashi Iwai [mailto:tiwai@suse.de] 
> Sent: Friday, February 29, 2008 5:57 AM
> To: Armando Di Cianno
> Cc: Tellman, Steven; alsa-devel@alsa-project.org
> Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
> 
> At Thu, 28 Feb 2008 20:29:06 -0500,
> Armando Di Cianno wrote:
> > 
> > 
> > On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
> > > Notice we use the "Other Digital" as the jack. Is that possibly
> > > causing
> > > a problem? IEC958 shows up, but doesn't provide output to HDMI
> devices
> > > (that I've tested).
> > 
> > At a user level, this is definitely what I've experienced.
> > 
> > Are there any suggestions for testing if my current ALSA
> > install /should/ work, or how to find out if something is
> misconfigured,
> > or will simply not work?
> > 
> > I will gladly try any suggestions, thoroughly.  Thanks.
> 
> It's a bit hard to judge right now.  So far, many HDMI devices seem
> not working even though it appears set up properly.  I've heard that
> ATI HDMI devices are working, but others are not well, e.g. on some
> devices only left channel is output and on others silent.
> 
> Moreover, I'm not pretty sure whether HDMI is connected from the
> digital out of STAC codec.  On many devices (e.g. ASUS ones), there is
> a dedicated codec for the HDMI transmitter.
> 
> So, right now, it's total lack of (hardware) information,
> unfortuantely.
> 
> We may try some verbs for HDMI that are not used in the current ALSA
> code, at least.  These verbs were extended later...
> 
> 
> Takashi
>