On Tue, Mar 4, 2008 at 4:44 AM, Jiang zhe <zhe.jiang@xxxxxxxxx> wrote: > On Mon, 2008-03-03 at 06:59 +0800, Tobin Davis wrote: > > It is possible that HDMI audio is pulled from an unknown i2c bus on > > the > > video chip. 3dfx did that a long time ago with their 3500 card for > > their tv tuner portion. > > > > I think at this point, unless Steven knows more, this may be > > unsupported > > until nVidia adds support in their driver or opens up part of the > > spec. > > > I googled some info about the nvidia G84** or G86** graphics core. > They got the audio signal from the external audio device through spdif. > > For Dell M1330, the spdif configuration for the stac92** codec looks > well, maybe the graphic driver can control whether the audio signal is > allowed to transfer through the HDMI port? In addition to anecdotal evidence, I can confirm that on my work machine the ATI video driver does seem to touch the audio. Interestingly it's the userspace X driver, not the in-kernel FGLRX module. rlrevell@chronopolis:~$ strings /usr/lib/xorg/modules/drivers/fglrx_drv.so | grep -i hdmi | grep -i audio ex_aHDMIAudioParameters Isn't DRM fun? ;-) Lee _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
