BFG 7800GS on MDD G4 Jun 18, 2011 17:51:54 GMT
Post by bubbamj on Jun 18, 2011 17:51:54 GMT
I own a MDD dual 1.0GHz G4, currently running a G5's Radeon 9600. I bought a new 7800GS for the G4, and made sure it is the 5.70 firmware. Its the BFG 7800GS OC with the big copper heatsink. I can take pictures if needed. Anyway, I went on The Mac Elite's wiki site and downloaded the "GeForce 7800 GS generic (nvflash, gotoh), tmeperature sensor removed for G4 running Leo (gotoh) " ROM and flashed it to the card. I don't have a PCI graphics card besides a flashed Radeon 7000 (for my B&W G3) so it is no use, but I flashed the 7800GS after backing up the current PC ROM, and then erasing the eeprom. So I THINK I did it correctly, though it has some problems. First of all, the device ID matches in both the old PC rom and the new Mac one: 0x00f510de. My MDD is dual booting 9.2.2 and 10.5.8. I went and modified a few OSX kexts in Extensions folder: NVDAN40HalPPC.kext and NVDAResmanPPC.kext and added 0x00f510de to the Info.plist then fixed my disk permissions and rebooted with the 7800GS installed. It loaded past the Apple logo and spinning circle to a blue screen with a frozen mouse, and went no further. I could hear the 7800 fan stop running as soon as I git that blue screen. I can successfully boot into Safe Mode though, and after process of elimination, I discovered that NVDAResmanPPC.kext was causing the hang. Though, even if I removed it (with a backup on USB of course), the Mac booted normally, though I checked in System Profiler, and it DID list as a 7800GS, though it said Core Image was "Software" and Quartz Extreme was not supported. I tried removing AppleHWSensor.kext and modified GeforcePPC.kext to list the device ID, but still nothing works. I cant have NVDAResmanPPC.kext installed at all without the mac hanging on startup, no matter what I try. And I cant open any videogames either, like World of Warcraft. Upon opening it, it states it cannot start 3D acceleration then quits. Halo and the Halo Demo both state an error occurs and quits, and Doom 3 and Quake 4 just simply don't open. These games work fine when I reboot after placing the Radeon 9600 back in. At this point I am unsure of what to do. I can attach pictures of whatever needed, copies of the original PC rom, and the mac rom I flashed, plus the kexts I modified if anyone wants to see them. Help please? Thank you for your time.