Hello Matthew, Sorry, made WinDbg picture for KSPROPERTY_AUDIO_MUTE request (Prop ID 0xD) for Mute node). Here is a picture for KSPROPERTY_AUDIO_VOLUMELEVEL request (Prop ID 4) for Volume node 1 designated as 8 by wdmaud. Regards, Eugene
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windbg_volumelevel.jpg
Description: JPEG image