I second this. I've been trying to get a 6970 working for a few weeks, but have been foiled by the white screen problem. Changing frame buffers doesn't seem to help. No white screen with safe mode (-x). I really wanted this card to work to take advantage of its capabilities for Final Cut Pro...
I have the same issue. I can reboot via the USB installation stick after the update to Yosemite, run Multibeast, reboot, and then this. No flags seem to help. I'm totally stuck.
I want to summarize my problem and my solution to display issues with an nvidia graphics card:
Hardware:
Gigabyte GA-X58A-UD7
Xeon W3520
9800 GT 1GB
12GB RAM
graphicsenabler=yes with no specific card data in DSDT
System was perfect on 10.7.1 with the latest Chimera fixing Facetime issues. I...
Thanks for the info, I'll look at that kext. It's a little strange as I've always used graphicsenabler=yes for my 9800GT without any issues or modifications. I haven't been able to figure out what has changed with this update.
And by the way, your English is fine, no need to apologize for it.
Finished building one using the converter method and the A1114 module. It was recognized on reboot and seems to work. I haven't troubleshot sleep issues yet. The pinouts on page 2 of the thread and the picture on page 10 by mooner made this one of the most satisfying and simple hackintosh...
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