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HDMI Audio in Windows XP - Hardware buffering not supported?

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First post, by bergqvistjl

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I'm trying to get HDMI audio working in Windows XP. I've tried both the onboard Intel HDMI Port (i7 3700) and an NVidia GT 430's HDMI Port - both times audio does work over HDMI, however dxdiag tells me that Hardware Buffering is not available, only Software buffering is - meaning audio doesn't work correctly in a few of my games (e.g. Nascar Racing 2003 - which appears to rely on Hardware buffering). Does anyone know if this is a general Windows XP issue with HDMI audio?

Reply 1 of 2, by shiva2004

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No, it's not.
I had an HTPC with windows XP and HDMI audio works both with a Radeon HD 4350 with native HDMI and with a HD 3650 with an DVI-HDMI adapter.
The two cards were AGP and the platform was more 'xp-era', a 775 machine, perhaps yours is too modern.

Reply 2 of 2, by bergqvistjl

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shiva2004 wrote:

No, it's not.
I had an HTPC with windows XP and HDMI audio works both with a Radeon HD 4350 with native HDMI and with a HD 3650 with an DVI-HDMI adapter.
The two cards were AGP and the platform was more 'xp-era', a 775 machine, perhaps yours is too modern.

Well HDMI audio in general works fine with software buffering, it's just any games that use hardware buffering, the audio don't work properly. I mean it might be just a quirk with that particular game.

The problem is, the game doesn't crash or anything, the audio just sounds odd. So I kinda have to guess whether the lack of hardware buffering is affecting the audio or not, on a per-game basis 😒

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