BSOD after waking up from sleep mode related to Xonar card

BearAttack

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I did a clean install of Windows 8.1 recently. Now when my computer wakes up from sleep I receive a DRIVER_IRQ_NOT LESS_OR_EQUAL BSOD related to cmudaxp.sys, which I've discovered is related to my Asus Xonar Essence STX sound card. I am running the Windows 8.1 beta drivers directly from Asus's website, and the drivers were working fine before my clean install. What could be causing this problem now, after everything was fine before?

Specs:

MOBO: MSI Z87-G45
CPU: Intel i7 4770k
RAM: Kingston HyperX Black 8GB 1600Mhz
GPU: Asus GTX680 DirectCuII Top Edition
WIFI: Asus PCE-AC68 Wireless Card

Thanks!
 
i have the same problem with essence stx II on Asus z 77 pro motherboard. Go in BIOS - Settings at Wake up Events and enable Resume by PCIE device. See if works! Please tell me if this was the cause.
 
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