This revision provides means for the audio codec to supply parametric data about its analog interface much like Intel High Definition Audio. There’s no such device reported in the Devices control panel anyway. I have no idea what “the output of alsa-info. I am sure there is differences and there is something going wrong in the ones that are failing. When I put the CPUs down to 1 it started working much better.

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We need to figure out a way to add those drivers to VBox additions, with permission from Realtek. In fact it should just read “does not work on Windows 7 guest” because this also includes bit version “and Vista guest” where exactly the same symptom is observed.

Audio software Sound cards Computer-related introductions in Retrieved from ” https: Gianfranco Costamagna costamagnagianfranco on I will ivh adding emphasis. If not, can you direct me to instructions on how to submit documentation? This probably has to do with how the HOST machine is set up. Short of these two options, I am prepared to drop the issue entirely and someone else with the same problem and is better up to speed with working with this code and these tools can pickup the effort.

Sound in VirtualBox from MacOS X Host

Sign up or log in Sign up using Google. We’ve just released Oracle Solaris 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.


Incomplete Is Audio support code still under development for this Volume Slider function or should it be working properly? Comment on this change optional. In that case you’ll still need to support it for some time at least for the next 3 yearsbecause lots of customers will ONLY be able to support paravirtualization In VirtualPC for Vista, this is what Microsoft chose, using a simple entry to the hypervisor, for its virtual audio device driver.

Some people had to switch to Alsa from Pulse Audio. AC97 is supported by most operating systems, such as Windows and Linux. The specification covers two types of component, and the “AC-link” digital interface between them: The least significant bit represents 1.

drivers – How to get ICH AC97 audio controller to work under Ubuntu Server – Ask Ubuntu

The standard was used in motherboardsmodemsand sound cards. Same with mplayer, under normal user, runs under sudo but no sound. Ubuntu Wily Werewolf development branch Release: Post as a guest Name.

I have not experienced anything like this on any of the other Guest OSes that I just listed If you have additional information requests, I will be happy to try and supply whatever you ask.

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. I’m not sure of the exact different I assume that HD audio will gives better audio quality but I’ll always go for HD audio if the mainboard has it, if the mainboard only has AC97 then I’ll och AC97 connector.


If, this can explain why Windows Update can find a driver for you, and not for me. I installed Windows 10 in virtualbox on my macbook and now speakers and mic are not working with win I recommend to ask Realtek to add those drivers to VBox Guest Additions until we have better solution. Fill in your details below or click an icon to log in: But more recent “HD Audio” devices are not all directly compatible with this older AC’97 specification which seems to be supported only as a local-only virtualization, indirectly on the guest where it reuses the actual HD Audio driver in a lower layer of the guest OS, and only t oprovide backward compatibility within some applications ; HD Audio devices include additional security requirements which are part of the DirectSound driver model specification for managing, for example, the HDCP protocol over HDMI and digital audio output jacks, and for managing DRM rights and data encryption for the highest quality output including within the audio mixer which cannot mix unsecured and secured audio sources and render a high quality mixed signal to an unsecured analog output.


Sign up using Facebook. Gene Soo genesoo wrote on Hi, can you please report then on the upstream Virtualbox ticket page? No upgrade log present probably fresh install dmi.