Are these registers honoring the correct distinctions between read and write accesses? The PnP enumerator also indicates that the following compatible IDs should be used to match a driver:. Are the emulated device registers returning the correct flags? Real player was still having issues 10 years ago and codecs were free with Media pla yer,,,Microsoft took codecs out of media player and other items, and recently has been hacking its audio software to make more income. Or say which is the manufacturer and version, as reported in your installed device? Note that although the discussion isn’t useless it really doesn’t belong here. Only the bit seems to be a problem..

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Strange enough, my PC supports both AC97 and HDA it also supports some old games that just support the SB16 working modedo you mean that it actually has two parallel devices? Note that although the discussion isn’t useless it really doesn’t belong here.

Preview Download View KB. User reviews about AC’97 Audio Codec. This can only be explained by differences in the emulation layer of the host, not on the guests as they are strictly identical. A lot of cons More. AC97audio a97, Windows7. Then look for the “hardware device IDs” or the “compatible device ID’s: Your review for AC’97 Audio Codec.


Make sure you follow the instructions on ticket very closely.

I can’t try with Virtual PC now, because it is not supported on Windows 7. This is an important step in getting audio to a point where it “just works”—users won’t need to worry cojtroller getting the right device plugged into the right audio jack. Could that be caused by lack of hardware virtualization? It almost certainly doesn’t support both. The Realtek AC97 drivers do install though they complain about being unsigned but on my system Fedora 11 bit host the audio output is crackling and auxio.

See TracTickets for help on using tickets. But if this can work, it will make RealTek audio drivers certainly happier withit, with less unsupported workarounds for old hardware bugs.

VOGONS • View topic – Integrated sound card in DOS

Free Difect for Windows. I tried with and without the guest additions and I also tried SoundBlaster 16 with and without the guest additions.

What happens if the guest OS itself uses its own local virtualization notably for memory-mapped device registers? And I still don’t have ajdio sound in a Windows 7 guest 32bit or 64bitor Windows XP guest 32bit onlyor Windows Vista guest 32 bit or 64bit ; I only get sound in a Linux guest.

May be it works because your actual audio on the host is effectively compatible with AC’97 and your audio device is still more basic.

Please take this discussion to the forum. May be it’s the mixer device instead of the audio device that does not work through the virtualization, and that does not properly enumerate the list of actual audio devices that it can control and their capabilities.


It is often used by gamers and those who regularly view films. SoundMAX hardware is known as providing crystal-clear audio playback. This software dramatically enhances the audio playback of most personal computers.

And they’ell be also able to uninstall the “physical” devices from their guest OS by turning off the emulation when unchecking the associated emulations offered by VBOX in its configuration panel. Are these registers honoring the correct distinctions between read and write accesses?

Do you recommend it?

Last modified 9 years ago. Use the AC97 device. None of teady solutions found do really apply to VirtualBox emulations, because all these solutions using various OEM drivers with various workarounds for the same problems are only meant to solve variably the same issues in a real hardware but not in the virtual emulation where they are not at all relevant and where they would finally cause more problems.

In the majority of cases, this hardware audo remain inactive otherwise. The Realtek drivers would be a reasonable solution, if they worked properly – there seem to be issues with audio crackling and volume control.