HD Audio for Windows XP guests (Vbox 4.0)

[sqrt]

Are we supposed to be able to use the HD Audio emulation in Windows XP guests ? Although AC 97 support is working fine, HDA is a nightmare with XP guests.

1. After hours of research, I was able to find something that accept to install (IDT Audio from Intel), but unfortunately the driver reports a Code 10... What drivers must be installed in theory ?

2. Many sites relate about Microsoft Universal Audio Update, that thing is present in the Device Manager.

[Perryg]

My understanding is the HD audio is only for Vista and newer. You should not need it in XP and AFAIK will not work.

[r9guy]

Dear sqrt
I have to argue your opinion. HD audio works fine on windows XP machines. the problem is I guess that IDT's HD audio driver is not tested on windows XP. my laptop is using IDT HD audio but if i will run XP driver will not work as weel. and it is a bug that that Virtual box is setting Hardware codes to IDT not intel because in the audio controller selection list it clearly says Intel HD Audio.

[mpack]

I have to argue your opinion. HD audio works fine on windows XP machines

Not on standard XP machines it doesn't. XP does not have native HD audio support, though non-native drivers are available and certain OEMs of course bundled whatever drivers their OEM PC required. It is possible to get RealTek HD audio drivers for an XP VM, but I've never bothered - stereo is fine for me.