[mythtv-users] [OT]HDMI, SPDIF, DVI Nvidia, etc
Calvin Harrigan
charriglists at bellsouth.net
Thu Feb 19 21:04:17 UTC 2009
Allen Edwards wrote:
>
>
> On Thu, Feb 19, 2009 at 12:32 PM, Calvin Harrigan
> <charriglists at bellsouth.net <mailto:charriglists at bellsouth.net>> wrote:
>
> OK, disaster might be a bit strong.
>
> I've been looking for good information on disabling the audio
> portion of the video card output for almost a week. My problem is
> with my new video card, when I connect it to the tv it sees that it
> is hdmi auddio capable and enables audio over the dvi->hdmi cable.
> Doing so caused the tv to ignore the stereo analog signal that it's
> being fed and try to play the hdmi audio which is most times just
> crackling noises. If I connect my spdif output to a little
> connector on the video card I can get audio for several applications
> (mythtv being one), but not all, worst than that after the audio
> stops the crackling noises begin again, especially after using xine.
> I would really like to disable that hdmi audio feature, but what
> I've found on the nvidia forums is not working.
> I'm running Linux kernel 2.6.24 with Nvidia drivers 180.29
> drivers with a 9500GT (G96). Nvidia is rightfully claiming that the
> TV is telling the driver via it's edid (Extension Block Details
> really) that the tv has audio capabilities via hdmi. With that
> information I downloaded my TVs edid and edited it to remove all
> references to having audio and redid the checksums etc. X thinks the
> edid is fine, so does monitor asset manager, but for some reasons it
> seems that the driver still enables audio. The only way I can
> disable audio for sure is to remove the entire Extension Block, but
> doing so removes several of the extended supported modes that I use.
> Seems that the driver is only looking for the presence of an
> extension block and is not really reading into it to discern whether
> or not the set supports audio. I can send both edids the original
> and the patched versions if anyone would like to take a look.
> Anyone have similar issues/problems? Any input would be
> greatly appreciated, thanks.
>
> Calvin
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org <mailto:mythtv-users at mythtv.org>
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>
>
> I will just point out that I had a problem where some applications would
> work with spdif and some would not and I had to connect an analog cable
> for sound from those applications. After putting the wiki together and
> following it, I now have all applications putting out sound through the
> spdif putput and have disconnected the analog cable. The wiki has three
> setups for hdmi audio and I must admit to not knowing which ones work
> the best or at all but I think they all should work. If you have not
> already done so, you might give them a try.
> http://www.mythtv.org/wiki?title=AllensDigitalAudioHowto
>
> Please let me know what your experience is with the three setups if you
> try them so I can refine the wiki for the next person.
>
> Allen
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Thanks,
I probably could have gotten the other apps to work but didn't try to
because of the noise that I get when notihing is playing. It's quite a
grating noise.
Calvin
More information about the mythtv-users
mailing list