[alsa-devel] HDMI v. ICH8 on Dell XPS M1330
rlrevell at joe-job.com
Wed Mar 5 01:54:58 CET 2008
On Tue, Mar 4, 2008 at 4:44 AM, Jiang zhe <zhe.jiang at intel.com> 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
rlrevell at chronopolis:~$ strings
/usr/lib/xorg/modules/drivers/fglrx_drv.so | grep -i hdmi | grep -i
Isn't DRM fun? ;-)
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