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Rampage IV extreme No sound on yosemite

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Joined
Jan 15, 2016
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Motherboard
Asus Rampage IV Extreme
CPU
i7 3930K
Graphics
Gainward GTX 680 4GB + Gainward GTX 680 4GB
Mac
Classic Mac
Mobile Phone
  1. iOS
Hi all,

I've just installed Yosemite and after post-installation with Multibeast 7.5, I have no sound after reboot and I already tested old Multibeast versions, rebuild cache..etc
In chimera plist, I use : ncpi=0x2000 dart=0 -f
If I don't boot with -f, I get stuck at this line on the boot.

"pci168c,30 cannot assert wake from D3cold"
"USBF: 1.388 AppleUSBEHCI:: unable to get filterInterruptEventSource"
"USBF: 1.388 AppleUSBEHCI::UINInitialize - Error occurred (0xe00002be)"

Realtek ALC898
DSDT free
Audio ID 1


thank you for your help.
 
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