Hello Gringo Vermelho, I as Grzesiek811, went from 10.6 looking for a solution to this problem during a lot of time.
I indicate my configuration:
Core Quad Q6600
P5Q Pro (updated to the last version)
Asus 9800 gtx, with 2 exits DVI and 1 S-video, connected to direct cable dvi/hdmi
Monitor: 2 Hanns'g with entry HDMI with capacity HDCP
S.O.: 10.6, 10.6.8 and 10.8.5
I have read all your suggestions about the arrangement across display-cfg, so much injected into the NVEnabler, as in the dsdt.aml, device-properties, injecting the rom of 8800 GT, Nvcap (04000000000003000c0000000000000700000000) obtained in windows and with nvcap marker, have to say that the value Nvcap across ioreg I could never obtain it, nevertheless in 10.6 I have this Nvcap (04000000000003001c0000000000000a00000000) and in 10.8.5 ((04000000000003001c0000000000000700000000) .
I have tried everything unimaginable and I have never obtained anything.
Even all the values and possible combinations on display-cfg, with me Id 0612 in NVDAResman.kext, NVDANV50Hal.kext.
macbook pro 8600GT: 03010000 - ffff0001 (this is the value that gives to me ioreg in 10.6 working quite)
macbook pro unibody 9400: 03010300 - ffff0801
macbook pro white 9400: 03010300 - ffff0201
mac pro 8800GT: 03010000 - ffff0001
imac 24 ' 7600GT: 03035000 - ffff3601
Apple TV 7300Go: 01ff0000
mac pro 7300GT: Ffff3600 - 00ff3e01
powermac 6800GT: 00ff3600 - 00ff3e01
On having read the thread on the capacity of the monitors HDCP, I thought that there could be there the problem, which does not do well the conversion of DVI to HDMI, but it cannot be like that because in 10.6.0 I have working two monitors and activated QE/CI, translucent bar, etc only with GraphicsEnabler=Yes, but from this version I have never been able to have two monitors working not even QE/CI.
In 10.8.5 yes he recognizes after me well the card but it has never worked with QE/CI, I have using so much GraphicsEnabler Yes as dsdt.aml, chain of values, rom, I even have used adapter of DVI to HDMI and neither.
I know that you have had 9800 gtx and I believe that you are the only person who can help the few ones that we have this big incoveniente.
As last option I am trying the installation of Maverick to see if he gets the problem ready, because I already do not have any more options to try.
I believe that this problem him happens only to some holders of 9800 gtx, because others yes that can make her work.
Can it be that this card does not work with QE/CI beyond the version 10.6?, it is for keeping on trying it or desisitir definitively.
In windows works perfectly with graphic acceleration and with two monitors.
I do not discard that it has harmed in any of the procedures.
If some day you could help us to solve this problem, personally it would be eternally grateful to you.
And if someone has his card 9800 gtx with two DVI working that does to us the favor of indicating us how.
Thank you very much to all.