Airplay will not send video when Both Video cards are enabled and working

[Staypuft]

I want to make a structured post to increase the likelihood that I get a response - forgive me if this is too much data...

Question First:
Why cant I use Airplay when I install my GTX 560 ti with my HD3000 onboard set as primary and enabled?

Details:
I have a working ML 10.8.5 build with a GA-Z68MA board with UEFI bios (U1C)

HD3000
No HDMI Audio (I dont need it but if it is causing the problem I will try to fix it)
Working: DVI Video, HDMI Video, QE/CI, Onboard Audio from Rear Jacks, Onboard Mic
I used the Kext edit @mrbubbles thread to enable the HD3000 without DSDT injection
I can Airplay 100% with 0 failures on only HD3000 graphics

NVIDIA GTX560 ti
Using Default Multibeast drivers (Cannot update from the NVIDIA Retail package 304.00.05f02 package because installer reports already better drivers)
I have not tried HDMI output from this card
DVI Video @ 2560x1440 on Dell U2711
QE/CI Working
Dual Monitors with DVI or HDMI on HD3000 and Dual Link DVI on GTX560 ti

• AppleTV 3
• Airplay will stream audio from iTunes with both cards activated
• I am using the MacMini5,1 sysdef
• NVRAM is working (icloud, imessage etc.)
• http://imgur.com/YKiPdiZ - Image of the System info for graphics subsystem
• View attachment staypuft.ioreg.txt.zip
• http://pastebin.com/j9rr5KDU - Output from Console for an Attempt to start Airplay video streaming
• http://pastebin.com/P3YcUbyt - Output of System Diagnostic report for coreaudiod

org.chameleon.boot.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>EthernetBuiltIn</key>
<string>Yes</string>
<key>GenerateCStates</key>
<string>Yes</string>
<key>GeneratePStates</key>
<string>Yes</string>
<key>GraphicsEnabler</key>
<string>No</string>
<key>Kernel</key>
<string>mach_kernel</string>
<key>Kernel Flags</key>
<string>darkwake=0</string>
<key>Legacy Logo</key>
<string>Yes</string>
<key>Timeout</key>
<string>2</string>
<key>UseKernelCache</key>
<string>Yes</string>
</dict>
</plist>

Let me know if there is anything else I can do to be helpful on troubleshooting this issue!

Thanks!

~Staypuft

 

[toleda]

Why cant I use Airplay when I install my GTX 560 ti with my HD3000 onboard set as primary and enabled?

Only enabled and recognized HD3000 is required for Airplay Mirroring. ioreg.txt is not helpful. Attach a copy of IOReg. [Guide] How to Make a Copy of IOReg.

 

[Staypuft]

Toleda - thanks for weighing in - I actually resolved my problem by simply switching to a Radeon HD6850 card. It looks like something to do with the audio device on the Nvidia GTX560ti.

it is largely academic for me at this point - but if you think we can help other GTX560ti users I will make the IOREG file you have requested...