Hi there
I've spent the past week or so trying to get my audio working properly in Yosemite 10.10.2.
I have a rather complex set up, although it seems quite functional and I'm comfortable with it.
My system specs are:
- Mobo: ASUS Sabertooth 990FX R2.0
- CPU: AMD FX 8350
- Audio: Realtek ALC892 8-Channel High Definition Audio
- OS: Fedora 21
I'm running OS X as a qemu guest, with the latest upstream Fedora 21 builds. I am passing through a number of PCI devices to the guest:
- Nvidia GeForce GTX 650
- Nvidia GeFroce GTX 650 audio
- USB 3 controller
- Realteak audio (ALC892)
I have attempted to use:
- HDAEnabler1
- HDAEnabler2
- HDAEnabler7
- HDAEnabler12.kext
(along with a patched AppleHDA.kext & also HDAEnabler.dylib with corresponding HDEF values set through Chameleon)
- AppleHDA8Series.kext with the HDAEnabler.dylib with corresponding HDEF values set through Chameleon.
I also tried to using Clover, however found I'd have an extremely fast key repeat rate, which led me to believe there's an issue with Clover retrieving my bus ratio/clock speed, so have not tried much more testing with Clover at this point.
I have concluded that the AppleHDA method is not going to work, given I am running on an AMD board (although when using HDAEnabler*.kext, PCI entries did change the HDEF in IORegistryExplorer)
I then moved onto VoodooHDA, which was a lot more promising. Immediately, I had sound working - at first with noise (fixed by reducing input gain to 0 on the line-out), although I am now facing horrible stuttering when listening to any audio (the sound randomly drops out for a few seconds, and then comes back fine, and so on) - this seems unrelated to CPU load as I've tried stressing out the CPUs whilst playing audio with no change.
I've manually set my bus ratio to 20 in the hosts BIOS (I think? The process wasn't very intuitive) and reflected that change in my Chameleon config, with no change (I then tried lowering that value to 18 in the Chameleon settings as I have read that under clocking the bus ratio is okay, to still no avail)
I am quite happy to use VoodooHDA, so long as the audio issues are resolved, and I'm not too bothered about anything apart from using a 2 channel 3.5mm audio cable (as Voodoo currently does, although with stuttering). Has anyone had any experience fixing my VoodooHDA issues? Or alternatively, patching AppleHDA properly for this sort of set up?
I am next tempted to try putting the audio card on its own PCI bus (as I am using qemu this sort of thing is possible..), I shall report back here with any other news/fixes if I have any!
submitted by munnerz
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