smashedup Posted December 11, 2013 Share Posted December 11, 2013 (edited) Hi there, many people have had problems with the 2nd HDMI port of their NVIDIA 8800GT and 9800GT cards under Lion and ML. Mostly with beamers. This seems to have helped a lot of people: 1. Download the macpro8800gt.rom2. Rename macpro8800gt.rom -> 10de_0611.rom and put it in /Extra (or what ever dev-id you have)2. Put this in your boot.plist (the one in /Extra)<key>GraphicsEnabler</key><string>Yes</string><key>UseNvidiaROM</key><string>yes</string><key>VBIOS</key><string>yes</string>Reboot and use both your displays with DVI/HDMI! (taken from here: http://www.insanelymac.com/forum/topic/261594-solved-8800gt-dvi-hdmi-problem/ ) It looks like this workaround doesn't work around anymore. At least not for me (I have a 9800GT). I had to update my bootloader to Chameleon 2.2 r2248 in order to successfully bootup Mavericks. Unfortunately now I can't use the 'UseNvidiaROM' and 'VBIOS' arguments anymore, otherwise neither my old ML partition nor my new Mavericks partition will bootup. ML will from Chameleon 2.0.1 r2109. Any ideas much appreciated! Thx! Cheers, Martin edit: I'm sorry, it looks like I've chosen the wrong section. This thread is supposed to live in either the NVIDIA or the Chameleon section, I guess. It's not related to Mavericks at all! (maybe someone can move it?) Edited December 11, 2013 by smashedup Link to comment Share on other sites More sharing options...
styrian Posted December 11, 2013 Share Posted December 11, 2013 You could try to get the NVCAP of the original Mac GT 8800 and set it in chameleon as argument. Have fun. Link to comment Share on other sites More sharing options...
smashedup Posted December 11, 2013 Author Share Posted December 11, 2013 thanks for your reply! But I tried installing NVEnabler_64.kext again (didn't work for me with Chameleon 2.0.1 or 2.1) and it works like a charme (without VBIOS and UseNvidiaROM). Link to comment Share on other sites More sharing options...
ramarlero Posted December 12, 2013 Share Posted December 12, 2013 Smashedup, I have the Asus 9800 gtx and take a lot of time finding a solution, this one that appears at first me does not work, I have proved it even injecting the rom in NVEnabler_64, in device propierters and not at all. Also I have tried with different values of display-cfg and neither.When I use UseNvidiaROM, it is always begun again in the starter. Only it me works in 10.6, having graphic acceleration and two screens working, but neither in 10.6.8 nor in 10.8.5 I have obtained acceleration, although yes he recognizes the card after me.The problem from what I have investigated the conversion of DVI seems to be HDMI, I have in the graph two exits DVI and two monitors have entry HDMI, they are connected by direct cable of DVI to HDMI.I have done many tests and all if success, if I meet on the solution I will write it here, and if someone it obtains that it indicates it here for the others. P.D.: I have written this itself also in the thread [sOLVED] 8800GT DVI->HDMI problem? Link to comment Share on other sites More sharing options...
smashedup Posted December 13, 2013 Author Share Posted December 13, 2013 yes, you're right, it's the DVI-HDMI conversion causing problems. But I can say for sure that - in my case - it had nothing to do with the OSX- but only with the bootloader-version. Above described methods work for Lion/ML/Mavericks all the same for me. Link to comment Share on other sites More sharing options...
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