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Audio over HDMI problem

MMars4
Novice
1,742 Views

Welcome

I would like to report the followin issue with some drivers/funcions under Windows 10. After turning Hyper-V on the AC3 bitstreaming over HDMI (Dolby Digital) stops working. The PCM sound/audio and DTS bitstreaming are working fine/correctly in both cases - when Hyper-V is turned on and off, while AC3 bitstreaming works only with Hyper-V turned off.

The problem occured already under the first release of Windows 10 and I think it applies to all drivers which appeared so far.

Additionally, when you start playing a movie some parts of the screen are rendered as a kind of white semi transparent pixelated areas.

My hardware and software configuration:

- Intel Core i5-4460 Processor

- Intel Haswell-DT GT2 Integrated Graphics Controller [Micro-Star International]

- MSI Z97 PC Mate(MS-7850) Motherboard

- Intel Z97 Chipset

- Intel Haswell Mini HD Audio Controller PCI\VEN_8086&DEV_0C0C&SUBSYS_78501462&REV_06

- YAMACHA RX-V475 amplifier connected over/via HDMI

- Microsoft Windows 10 Professional Build 10586 x64

- Video driver 20.19.15.4352

- Audio driver 6.16.0.3190

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1 Solution
MMars4
Novice
795 Views

OK.

I found a solution. Disable VT-d in UEFI!!!

Bitstreaming AC3 with Hyper-V works well.

View solution in original post

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MMars4
Novice
796 Views

OK.

I found a solution. Disable VT-d in UEFI!!!

Bitstreaming AC3 with Hyper-V works well.

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Reply