But someone needs to explain then why my “virtualized” hardware PnP device Ids are different. It sounds like the VirtualBox guys should do one of:. You can close the issue for me: By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. Codec chips have an AC97 interface on one side and analog audio interface on the other. Implementing a virtual HDA controller is likely the way for the VBox guys to go long term it’s supposed on modern Windows and Linux versions without manufacturer-specific drivers but that’s a non-trivial endeavor.

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These are just a few examples, but they don’t always report this in the marketed product type, when they judge that the disabled feature is not essential for their market, or when they can provide workarounds around some common defects.

I will be adding emphasis. The guest additions are not required for the audio output. Infact, no sound at all when I am in Ubuntu. And you can still install a secondary hardware audio board in any PC, if you wish, without having to disable the primary audio device for Windows it does not matter if they use different working modes, it can perfectly handle several audio devicesjust like you can also install a secondary display device, or a secondary keyboard, or a secondary disk controler, or a secondary USB host controler many PCs today audjo several USB host controlers, or use a controler working in “dual” mode with one virtually connected to the other.


Realtek AC97 Audio Driver for Windows 10, 8.1, 8, 7, XP, Vista

To och the audio device work, you need to install a driver for it. In particular the handling of plugging in of front panel devices is different. Everywhere above, I spoke about Win32, you’ve not read it. If you plug an AC97 front panel into a HDA motherboard then plugin detection will not work correctly, it may detect devices as not present when they are present and vice-versa and the exact results may depend on what audio is playing.

Adding this as a comment in case someone comes across it. June 5th, 3. On some motherboards it may be possible to disable the plug-in detection so they can work better though still not perfectly with an AC97 front panel.

Sign up using Facebook. The network access is also working and I can browse the internet through the Ubuntu guest. The correct one to use depends on your case.

AC’97 – Wikipedia

The header on mine is just labelled audio. Are there other conditions in order to support DirectSound record sources?

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. It remains that AC97 and HDA are not compatible at all, they use entirely separate drivers and implement entirely different interfaces. But if this can work, it will make RealTek audio drivers certainly happier withit, with less unsupported workarounds for old hardware bugs.

Anyway, this still does not explain why the SB16 emulation offered in VirtualBox does not work either.

June 5th, 1. HDA is a matter between the driver and the hardware”.


The drivers need a reboot to work properly. I can’t try with Virtual PC now, because it is not supported on Windows 7. 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 distorted.

The cable looks somewhat like thiswith the AC 97 connector attached to the HD audio connector. I had already tried this driver.

Post as a guest Name. Make sure you follow the instructions kch ticket very closely.

[SOLVED] Realtek AC97 – No sound in VirtualBox

Reboot the Computer After all the drivers are fixed or installed, reboot the computer for all changes to take effect. Home Ax97 Tags Users Unanswered. 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. Ihc no such device reported in the Devices control panel anyway. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the af97 is subject to these policies.

I’m not even sure that VirtualBox can deliver secured “HD” audio over the virtualized device without breaking the authentication chain, if the driver installed on the guest is not itself “certified” by Microsoft WHQL, or at least digitally signed with a software certificate from as “reliable” PKI provider.

Here is the VBOX.