I'm pretty much in the same boat, but using 10.5.7. I do have the correct resolution, but now I'm running into a glitching type problem when I move a window or scroll I get horizontal lines on the screen, that appear as 1/4" dashes, that trail the window. If I'm scrolling, it may only show 2 lines at the bottom of the window when scrolling down, and 4 at the top of the window when I'm scrolling up. It doesn't really hurt anything but it just seems like something isn't working right. I also can't seem to get Quartz enabled. When I used OSX86 Tools to enable it, I couldn't get my system to start back up. Here's my System Profile description: NVIDIA GeForce 9800 GTX DDL:
Chipset Model: NVIDIA GeForce 9800 GTX DDL Type: Display Bus: PCIe PCIe Lane Width: x16 VRAM (Total): 512 MB Vendor: NVIDIA (0x10de) Device ID: 0x0613 Revision ID: 0x00a2 ROM Revision: 3172a Displays: SyncMaster: Resolution: 1920 x 1080 @ 60 Hz Depth: 32-Bit Color Core Image: Software Main Display: Yes Mirror: Off Online: Yes Quartz Extreme: Not Supported Display Connector: Status: No Display Connected
You cannot really flash that card as apple never used it in the mac pro therefore no suitable mac rom exists. However, if you download an injector such as NVEnabler.kext and try the card in slot 2 to start with you may be able to use it. You must have your 7 series card in slot 1 though as this will inject the information that is missing from your 9 series cards bios. If this works, try reversing the cards around. You wont get a picture on the screen that way though until your mac hits the blue boot screen as that is when the injector loads.
Thanks a lot for the reply Aquamac, i have done some test reading this forum and insanelymac + netkas. I've done all the test/tips with no luck (maybe is this 9800gt). the main problem is all about the mac pro 1,1. The only official "big" gfx card is the 8800. I read about flashing a 285, maybe i can try with this card.