Radeon HD 4850 - ATI Function Driver for HD Audio - ATI AA01

Hi all,

When I was at the store earlier I saw a HD 4850 and noticed it was listed on the best of december 2008 video card review when surfing with my blackberry from here. I thought to myself that if its on this list then it's good enough for me .

Anyway I bought and installed the card, runs fine. I just had a question regarding the high definition audio. I noticed a new device under my Sound, video and game controllers named:

"ATI Function Driver for High Definition Audio - ATI AA01"

I figured it was the onboard sound from the video card and navigated to my sound and audio devices and attempted to choose this option under my sound playback but there was no such option. The *only* option there is my SB Audigy 2. Even if I wasn't going to use this device, is there a reason why it won't show up on the list? I searched the net for similiar issues but didnt find anything. Anybody have an idea?

I would basically like to have the "option" to switch to it but its not listing at all. I went into my MB bios and enabled the onboard sound there (Asus M2V - realtek HD) to see if it had anything to do with this and it only listed its own.

I also attempted to install all of the ATI software that I could grab, display drivers, CCC package, VIVO package, reinstalled the ATI HD audio drivers over a few times etc but no luck.

Anybody have any idea?

Btw my setup:

AMD X2 3800+
2 GB system memory
Asus M2V Motherboard
VisionTek Radeon HD 4850 512MB
OCZ 650W PSU

Yeah for me it shows up selectable in Vista but not in XP. Anyway it's for the HDMI output. If you use the HDMI adapter, usually included in your video card box, you can connect it to a TV or home theater system and both audio and video will be outputted from your computer. It's great for hooking the thing up to a sound system or HDTV, but not useful otherwise .

Well I'm the one that is using it in that fashion. I've got the output connected via HDMI, but I am NOT getting any sound. Like ghowthoo said, the driver is loaded and the ATI instructions state go into your Audio Device setting and select the "mixer" as your default devise, but it is not listed as an option. Anyone have any ideas?

Win XP Pro SP3
Dual Xeon 3GHz, 4GB RAM

well, trying your solution was the best ever happened since I bought my HD4350 yesterday. I have tried everything I could even formated the whole Drive and installed everything all over again, but no luck in getting any single sound...
anyway, when I installed Realtek HDMI R2.13, I could finally open music files (unlike before it said that a sound unit was missing even with all drivers installed). But here again, yes I opened the file, and volume is maximated, but still I didn't get a sound.
Can anyone help me with this issue?

The system am using:
Windows XP Media Center Edition Ver 2002 - SP2
AMD Athlon 4600+
2GB RAM

I have had problems in XP after installing ati catalyst 9.7 with drivers for my new 4850 1gb sapphire. I do not have this problem with same system using windows 7 RC newest ati drivers with this video card.
After installing 9.7 drivers my video playback in windows media player acted like it was on fast forward visually along with having no sound.
I had no problems with my video or audio before I installed this card.
How I fixed the problem was to just disable the ATI hdmi audio in Device Manager in windows XP.
My audio and video then worked perfectly again,but anyone wanting to use the hdmi audio on a high def tv would not want to do this IF they wanted to use the hdmi cable.
Until ATI fixes this problem with their XP drivers,I would say just connect to a high def or LCD tv with the hdmi and use pc speakers.
I am not sure if the hdmi audio works on Vista or windows 7 using the hdmi cable on an LCD TV.

Try downloading the new 9.8 drivers from ATI's driver page on AMD website. You can also individually download the hdmi driver there also.
Here's the link for xp hdmi drivers. Notice that you have to install step 1 if you have Service Pack 2 or earlier on xp.If you have Service Pack 3 just download and install Step 2 on this page ---> http://game.amd.com/us-en/drivers_catalyst.aspx?p=xp/hdmiaudio-xp

I haven't heard or seen the Realtek Drivers dissapearing from Device Manager. I did not have that problem,just that the HDMI drivers were blocking my Realtek drivers from working.The new drivers seemed to work until I restarted my computer,which afterwards I had no audio for my videos or mp3's that I play off my harddrive.
So it seems 9.8 drivers the problem has not been fixed for XP.

Hi,
Don't waste your time, if you don't use "HDMI" this feature is pointless, do this to get your sound back:
Restart your system

go to bios
onboard Audio
Set it to Enable (not auto). To force your sound card.
Restart

Done.
Good luck!!!

I had the same problem and figured out that your advise is only the way.
I may be able to buy a fancy HDMI monitor later and will try the device driver for my graphic card (ATI HD4350). Thanks.