animani Posted July 1, 2011 Share Posted July 1, 2011 Hey guys so I wanna have two cards in my rig... why? GTX 500 series does not work yet in Snow Leopard so I wanted to buy it as I mostly use for win/games anyway. And I can stick with my second one which is working since a while already under OSX. I can wait until a fix for the GTX comes out. I just wanted a better card for gaming thats all. But my question is: Is there any way to deactivate the card from Bios or any other method while I am running OSX. I guess both cards working even just one doing the job for OSX would be a lot of power consumption for no reason. Hope I explained my self clear enough. Cheers. Link to comment https://www.insanelymac.com/forum/topic/261192-2-video-cards-1st-for-win-2nd-for-osx/ Share on other sites More sharing options...
ifrit05 Posted July 1, 2011 Share Posted July 1, 2011 Is there any way to deactivate the card from Bios or any other method while I am running OSX. No. Unless you can disable the individual PCI-E slot in your BIOS. But that would be a hassle to do on every boot just to boot Windows or OS X with a different GPU. Link to comment https://www.insanelymac.com/forum/topic/261192-2-video-cards-1st-for-win-2nd-for-osx/#findComment-1706395 Share on other sites More sharing options...
animani Posted July 1, 2011 Author Share Posted July 1, 2011 It would be just until we get some solution to make any latest ATI or Nvidia video card working under OSX, Then I could remove the second one. I am not gonna be jumping from OSX to WIN every hour so I guess the only solution would be disconnecting power cables right before. Shouldn't I be able to choose the primary graphic slot? Therefore the second one will be ignored? Doing that would be easier I have to change from AHCI to IDE every time I want to run winXP so for me is just the same. I did not know yet how to add AHCI support in windows XP. Shame on me! Also should work the only card with DVI cable plugged? Only card installed and being the only slot selected as primary graphic card in BIOS? Just speculating. Link to comment https://www.insanelymac.com/forum/topic/261192-2-video-cards-1st-for-win-2nd-for-osx/#findComment-1706721 Share on other sites More sharing options...
Krazubu Posted July 2, 2011 Share Posted July 2, 2011 Pretty easy to do : Make the OSX card hardware primary (from BIOS and in 1st PCI-E). Set it properly in OSX and ensure dev IDs for the secondary card are removed from NV kexts. Make the hardware secondary card "software primary" in windows, you can install both cards, no matter. You'll still need to switch the display cable. That's all. Link to comment https://www.insanelymac.com/forum/topic/261192-2-video-cards-1st-for-win-2nd-for-osx/#findComment-1707117 Share on other sites More sharing options...
animani Posted July 2, 2011 Author Share Posted July 2, 2011 Thanks for the info mate. How do I know which ID is the card? Link to comment https://www.insanelymac.com/forum/topic/261192-2-video-cards-1st-for-win-2nd-for-osx/#findComment-1707201 Share on other sites More sharing options...
camoguy Posted July 6, 2011 Share Posted July 6, 2011 Thanks for the info mate. How do I know which ID is the card? Excuse me for butting in, but I have successfully done what you are trying. Secondary card 560 Ti, primary for snow 8400. I tried nvenabler but I would get kernel panics on boot, but I never removed the device id's and vendor id's from nvenabler info.plist. I had it working through a dsdt code, I identified my 8400 gs in dsdt and ignored my other card. Then it worked, but after update 10.6.8, I started getting hung up on PCI Configuration Begin... I pulled the 560 out and that solved that. Just yesterday I got Lion gold master, got sound, wireless, and my 8400 working flawlessly. Then I tried my 560 as the primary and only card, low and behold, Lion has fermi drivers. All I did was create the nvcap and display-cfg information and add that to dsdt. So now I no longer need to have two cards... SO back to the question, click on the apple in the corner, about this mac, more info, graphics/displays should reveal that, also could be digged up in ioregistryexplorer, lspci tool would reveal that, if it's an nvidia card, nvidia's vendor id is 10DE, then devid would be something like 0x08a3 Link to comment https://www.insanelymac.com/forum/topic/261192-2-video-cards-1st-for-win-2nd-for-osx/#findComment-1709992 Share on other sites More sharing options...
qbe Posted August 23, 2011 Share Posted August 23, 2011 camoguy, do you think it can be done in snow leopard without editing dsdt? can the low card be located in second slot? what im aiming for is have snow leopard and lion install both on computer, i need it because of software i work with. when i boot to lion, i will you 560ti but when i boot to snowleo, some old nvidia would boot. when all of my software migrate to lion, i could abandon it, but so far i cant. do you think its possible without too much hassle ie editing dsdt as that is something i would rather not go into... Link to comment https://www.insanelymac.com/forum/topic/261192-2-video-cards-1st-for-win-2nd-for-osx/#findComment-1738758 Share on other sites More sharing options...
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