adamsweeting Posted August 30, 2009 Share Posted August 30, 2009 Hey people... Hope someone can help me out, I'm going mad here! I've got a perfect vanilla 10.5.8 running on another harddrive... Got Snow running good on a seperate harddrive, with sound, networking - just can't get hardware accelerated GFX. Installed retail Snow using my 10.5.8 system, EFIv10.1, the usual extensions in /E/E I am not using dsdt.aml.. GFX is working via software rendering, but as soon as I add EFI strings to the boot.plist in /E/E - the system boots, but I get a black screen. I know it's running coz I can get sounds, eject DVD tray via keyboard etc. I've tried using EFI studio, UIinstaller, copying the hex from my 10.5.8 system = all don't work. One thing I thought of was that a while ago when there was an issue with mouse jerking when a Quicktime update came out, I flashed my GFX card with a custom ROM that solved it. I don't know if that would be the cause... because it works perfectly with EFI in 10.5.8 I also got the same result adding Natit.kext to /S/L/E Link to comment https://www.insanelymac.com/forum/topic/182908-black-screen-when-using-efi-strings-8800gt-512mb/ Share on other sites More sharing options...
pentiumpc Posted August 31, 2009 Share Posted August 31, 2009 I have a 8800GT 512MB, work perfectly in SL.. let me know how I can help.. Link to comment https://www.insanelymac.com/forum/topic/182908-black-screen-when-using-efi-strings-8800gt-512mb/#findComment-1243507 Share on other sites More sharing options...
adamsweeting Posted August 31, 2009 Author Share Posted August 31, 2009 What's the device ID of your card? Link to comment https://www.insanelymac.com/forum/topic/182908-black-screen-when-using-efi-strings-8800gt-512mb/#findComment-1243741 Share on other sites More sharing options...
adamsweeting Posted August 31, 2009 Author Share Posted August 31, 2009 Solved now. I flashed my GFX with a vanilla ROM from the manufacturers website using nvflash. Then created my own custom EFI string using OSX Tools with DVI / DVI output. All working properly now. Link to comment https://www.insanelymac.com/forum/topic/182908-black-screen-when-using-efi-strings-8800gt-512mb/#findComment-1244406 Share on other sites More sharing options...
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