From the Wikipedia entry:įor digital audio, if an HDMI device supports audio, it is required to support the baseline format: stereo (uncompressed) PCM.
PCI HDMI INPUT VIDEO CARD SOFTWARE
There's no reason an AMD card shouldn't but yes, with the appropriate settings and drivers, this certainly is possible - just ensure these audio devices are available, and set as the system default or the output for that application.Įven if the device exists, there do seem to be some possible software issues under linux but the hardware certainly supports it I had someone check up an AMD system, and he runs linux - and he reports it turns up under lshw as something like 02:00.1 Audio device: Advanced Micro Devices nee ATI Turks HDMI Audio
PCI HDMI INPUT VIDEO CARD DRIVER
I do believe there's a similar setup with intel onboard video - on my laptop, its called 'Intel(R) display audio', and I suspect it uses the default driver on my desktop. This screenshot is from windows, but we're talking about the hardware capabilities I'm unsure about AMD cards but modern Nvidia cards have a onboard HD Audio compliant sound adaptor built in for this purpose - I've checked this with cards of 400 series and higher This may require special drivers, and you might have to change your default output device. I'm not certain what the situation with Linux is, but audio out via HDMI does come up as a separate sound device on Windows when you have a discrete video card.
Failing that, you can make some assumptions - a brand new card now probably supports it. You may have some luck contacting the manufacturer, asking the retailer or searching for other users of the card model. Unfortunately, graphics card manufacturers don't seem to put the HDMI audio details into their spec sheets (at least MSI doesn't). I had a MSI nVidia 9500 GT that did this. Some older cards only have partial support, and require a S/PDIF connection to a header on the motherboard/sound card.
However, whether it works for you depends on the specific card, though all the recent cards I know of from AMD or nVidia do support audio via HDMI. The HDMI standard itself does support audio.
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