[pulseaudio-discuss] HDMI passthrough request for help

Xavier Bestel xavier.bestel at free.fr
Tue Feb 22 07:49:00 PST 2011

On Tue, 2011-02-22 at 09:44 -0600, pl bossart wrote:
> > There are a few things missing for me to have xbmc+pulse working well
> > with a surround system over HDMI:
> > - volume control when in passthrough mode
> > - volume control via the amplifier; I see 2 methods here:
> >        - either via HDMI CEC, but from the latest spec the only
> >          available commands are volume-up and volume-down, no way
> >          to directly set a volume, nor to calibrate it properly
> >        - via a serial cable, it's amp-specific but more capable
> > - [off topic] more than 2 PCM channels via HDMI radeon drivers
> Does any of these features work with plain ALSA? I don't think what
> you describe is a PulseAudio limitation?

No it doesn't, but I think aggregating a volume control channel and a
PCM channel would be more of a PA thing that an ALSA thing.


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