I am using the latest NVidia driver (180).
The one point of yours I have not adequately tested is the EDID. I'm not sure, but my TV may not send the correct EDID information to the computer. It is a 1366x768 screen and it took me a long time to get the resolution setup correctly. When using HDMI, it would not be displayed correctly, then when using VGA it would be. I used the NVidia tool to save the EDID file when I had the VGA plugged in since it worked well with it. Then I load that EDID file in the xorg.conf file via adding an option to devices, "options "CustomEDID" "DFP-0:/path/to/edid.bin" Then I changed back to the HDMI plug, rebooted, and my resolution is perfect with HDMI. NOTE HOWEVER, that I've tried the audio both with and without using this customEDID option. When it is not used, the resolution is not quite correct and the audio still does not work.
If my EDID information from the TV is wrong, what can I do to make the audio work?
Thanks,
Scott
----------------------------------------------------------------------
Message: 1
Date: Tue, 12 May 2009 11:42:41 +0200
From: Paolo Saggese <pmsa4-alsa@xxxxxxxx>
Subject: Re: ASUS M3N78-EM Motherboard (NVidia + ALC1200)
- HDMI Audio not working
To: alsa-user@xxxxxxxxxxxxxxxxxxxxx
Message-ID: <200905121142.42533.pmsa4-alsa@xxxxxxxx>
Content-Type: text/plain; charset="utf-8"
On Tuesday 12 May 2009, Scott Barlow wrote:
> I cannot get the HDMI audio to work with my ASUS M3N78-EM motherboard! I've
To get audio over HDMI may be not so straightforward at times, 'cause
it depends on a number of different things... not necessarily related
to the audio system (ALSA).
First of all: do you see the output device listed with aplay -l ?
Consider that the device which sends audio through HDMI is likely NOT
the default one (which usually is analog out), but rather is seen as a
digital out (that is, IEC958 aka S/PDIF).
If the device exists and is listed, you'll have to explicitly setup
your apps to use it (e.g. plughw:0,1 or whatever it is) or define it
as default on your "~/.asoundrc" file.
Which video driver are you using? AFAIK having audio over HDMI enabled
depends also on the nVidia video driver (you must use a recent version
of the nVidia proprietary driver).
It does also depend on the EDID of your A/V screen (HDTV, projector?)
properly reporting audio capability in the extensions block, otherwise
the nVidia (VIDEO) driver will NOT enable audio over HDMI.
Ciao,
Paolo.
--
Skype: Paolo.Saggese
http://borex.lngs.infn.it/saggese
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