dlerch Posted July 28, 2011 Share Posted July 28, 2011 So I have a relatively quick PC running Windows 7 Ultimate. Specs: Asus P5Q Pro Turbo Mobo CPU: Q9550 3.4ghz OC Gskill 8gbs DDR2 Ram SLI GTX 260s Yes my board is non SLI, but I installed the SLI patch for Windows and it works flawlessly. I need to get SLI working on OSX. As Snow Leopard fails to boot with a 2nd GPU installed. So I have three options: Get SLI to work on OSX Buy a more powerful graphics card that is faster than my SLI setup now and it must be supported by OSX. Or just find some way to disable my 2nd card when I choose to boot OSX. Any help? Whoever solves it gets a reward. Link to comment https://www.insanelymac.com/forum/topic/263889-gtx-260-sli-in-osx/ Share on other sites More sharing options...
CooSee Posted July 28, 2011 Share Posted July 28, 2011 here's an old HowTo! Dual Cards HowTo ! no guarantee CooSee ' Ya Link to comment https://www.insanelymac.com/forum/topic/263889-gtx-260-sli-in-osx/#findComment-1724893 Share on other sites More sharing options...
iquit040 Posted July 28, 2011 Share Posted July 28, 2011 I have GTX460s running in SLI in my computer for win 7... in lion they both work independently. This was not fun to get working... You need a DSDT and to edit it to give addresses of the cards... I'm attaching my dsdt for you to see what i did.... i have a section in there for hdmi audio, but won't work for you and if you don't have hdmi, might be an pain... so might need to drop that out if you are cutting and pasting sections from my DSDT http://tonymacx86.blogspot.com/2010/01/adv...a-graphics.html that post shows you how to edit for one card... so you may have to do these steps to get the correct info for the cards, make/edit a dsdt and the put the second card in after putting the dsdt in the extra folder before the final shutdown before adding the second one in. you will need DSDTSE to open and edit DSDT files. I was working with dsdt auto patcher from Mald0n and talking with him when i was having issues with my setup (my power management was causing kernel panics) just sharing some info and letting you know dual cards is possible, but SLI will not work in OSX... upside is the 4 monitor option for me now and not having to remove a card to get osx to work iquit040dsdt.zip Link to comment https://www.insanelymac.com/forum/topic/263889-gtx-260-sli-in-osx/#findComment-1724987 Share on other sites More sharing options...
dlerch Posted July 29, 2011 Author Share Posted July 29, 2011 That seems like an easy fix, only one problem I installed [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url] after I upgraded to 10.6.4. Just like the instructions asked me to, then I installed the nvidia injector. Now I am getting a pci configuration begin message when I -v boot. With both cards in and with just one card in. How the heck can I use the DSDT editor if I can't even get it to boot anymore? Can I edit them from command in [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url] or with [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url]? I am at a loss here and I really do not want to have to reformat the install and start over again. Any help would be much appreciated. Link to comment https://www.insanelymac.com/forum/topic/263889-gtx-260-sli-in-osx/#findComment-1725082 Share on other sites More sharing options...
CooSee Posted July 29, 2011 Share Posted July 29, 2011 pci configuration begin message add to your kernel flags in ' /Extra/com.Apple.boot.plist ' : npci=0×2000 CooSee ' Ya Link to comment https://www.insanelymac.com/forum/topic/263889-gtx-260-sli-in-osx/#findComment-1725096 Share on other sites More sharing options...
dlerch Posted July 29, 2011 Author Share Posted July 29, 2011 Worked like a charm, thanks :-D Now I have two video cards installed, I can run windows and OSX without taking my spare card out. Link to comment https://www.insanelymac.com/forum/topic/263889-gtx-260-sli-in-osx/#findComment-1725121 Share on other sites More sharing options...
red! Posted August 3, 2011 Share Posted August 3, 2011 Hi everyone i tried to get my two GTX460 working as well but no success! i have posted my problem already here. maybe some of you can help me out there!!!! cheers red! Link to comment https://www.insanelymac.com/forum/topic/263889-gtx-260-sli-in-osx/#findComment-1728598 Share on other sites More sharing options...
Iseeutoo Posted December 14, 2011 Share Posted December 14, 2011 Hello i got also problem with SLI on P5Q Deluxe. 2x 8800GT under windows with hack work perfect but osx hang on pci configuration begin when 2 cards are in slots. Iv tried to dsdt patch from your example. Compiled without errors also cards at P0P2 and P0P3 works with Qe/CI and correct detected ports but dont work together. If you could check my DSDT iquit040 then ill be glad. Thanks a lot. ;< DSDT with Two cards. P0P2, P0P3 http://www.mediafire.com/?27otmgg68w3qjct Clean DSDT http://www.mediafire.com/?sm3om478o539oug Link to comment https://www.insanelymac.com/forum/topic/263889-gtx-260-sli-in-osx/#findComment-1778665 Share on other sites More sharing options...
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