DisplayPort audio issue with Windows 10

I'm using a Surface Pro 2. After my upgrade from Windows 8.1 to Windows 10, I'm not getting any audio out from the DisplayPort.

I use DisplayPort to HDMI to a receiver. I've upgraded to the latest RealTek audio drivers, but it's not helping. Could there be a different driver issue at play?

Any suggestions appreciated.

Right-click on your volume icon and click playback devices. Ensure it's selected.

samsonbiatch said:

Right-click on your volume icon and click playback devices. Ensure it's selected.

Thanks for the suggestion. I've confirmed that the correct playback device is selected, but it makes no difference.

have you checked that your DP is DP++ as in capable of pushing out audio? if you got some reaally old DP-HDMI cable or adapter, might be that it hasnt got that ++ qualification

batlhilz said:

have you checked that your DP is DP++ as in capable of pushing out audio? if you got some reaally old DP-HDMI cable or adapter, might be that it hasnt got that ++ qualification

The same cables were working fine when I was using Windows 8.1. So it doesn't seem to be a hardware issue.