Post by aquamac on Jun 1, 2008 8:42:00 GMT
How to get 2 Graphics cards going with GFX Strings in OSX86. (Dual Card only - Go here for Single Cards).
PLEASE NOTE - SNOW LEOPARD 10.6 - 10.6.3 When making your output file - that must be done booted from Leopard only or upgrade to 10.6.4 onwards. Snow Leopard 10.6 - 10.6.3 gives the wrong info in the output file and you WILL NOT get QE/CI working!
This is now working in 10.6.4 onwards again!
You may well want to print out these instructions first and go over the procedure first!
You have to have EFI V8 or Chameleon 1 or 2. It will not work with EFI V7 to V7.4
Download one of the following files to your desktop:
Cards for Leopard/Snow Leo Below:
Dual GeForce 8800 GTX 768 mb cards: Click to Download
Dual GeForce 9800 GTX 512 mb cards: Click to Download
GeForce 7800 GX2 512 mb per card:Click to Download
Quadro FX 4500 x2 1024mb:Click to Download
Dual GeForce GTX 280 1024 mb cards: Click to Download
1. Unpack it and drag both the gfxutil program and the in.plist onto your desktop.
Open in.plist with either the Apple "Property List Editor" that comes with Apple developer tools or download Plist Edit Pro for free:
www.macupdate.com/download.php/14363/PlistEditPro.dmg
2. Open up in.plist with one of the above programs, you should see something that looks like this:
Click on the first small triangle next to PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0) and expand the display as below:
3. Where you see NVIDIA GeForce 9800 GTX DDL, change this to the name of your graphics card that you want to use by double clicking it and overwriting the supplied info.
4. Next, do the same with the "00000020" value next to VRAM,totalsize. The default entry is for a 512 mb card, but you need to replace the existing value with one for your card. Here are the values you need for differing Ram amounts of graphics cards.
<00000008> - 128Mb
<00000010> - 256Mb
<00000014> - 320Mb
<00000020> - 512Mb
<00000028> - 640Mb
<00000030> - 768Mb
Only enter the figures between the arrow heads as the original default info!
4. Now expand the second "PciRoot(0x0)/Pci(0x6,0x0)/Pci(0x0,0x0)" and change the info for your second card, the name of the card and the ram size using the info supplied above.
5. Click on File and save the file.
6. Remove either NVInject, NVKush or Natit from your extensions folder. You must do this otherwise GFX strings will not work. Backup the one you use somewhere safe.
7. Shutdown your computer.
8. Place the card you want to use as your main card in your first PCIe slot but NOT the second card.
9. Boot your computer, you may have crappy resolution as you will currently not have QE & CI.
10. Open up the Terminal program in OSX and type the following:
cd ~/desktop (then hit return)
then type:
./gfxutil -f display (then hit return)
You should get something along these lines printed out in the terminal:
PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)
Open up your in.plist again this time with text editor and overwrite the first instance of this information at the top (not the info half way down).
Save the info by clicking File then Save.
You need to power down your PC and REMOVE the first graphics card. Install the second card in THE SECOND PCIe slot, NOT the first slot. This is important.
Reconnect your monitor and fire up your PC again.
11. Open up the Terminal program in OSX again and type the following:
cd ~/desktop (then hit return)
then type:
./gfxutil -f display (then hit return)
You should get something along these lines printed out in the terminal:
PciRoot(0x0)/Pci(0x6,0x0)/Pci(0x0,0x0)
Open up your in.plist with text editor again and overwrite the SECOND instance of this information HALF WAY DOWN (not the info at the top).
Save the info by clicking File then Save.
Phew! You still with me....Good, the hard work is done. You now have a complete in.plist file.
12. Open up the Terminal program in OSX again and type the following:
cd ~/desktop (then hit return)
then type:
./gfxutil -i xml -o hex ./in.plist ./out.hex (then hit return)
you should now have a new file called out.hex on your desktop. Open this file with text editor and it will have your new graphics string. It should look something like this:
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
Copy it and open the finder and head to /Library/Preferences/SystemConfiguration and drag a copy of your com.apple.boot.plist to the desktop. Open it up with Text Edit and under the last string, which is usually the......
<key>Kernel Flags</key>
<string>Yes</string>
add a couple new lines as follows
<key>device-properties</key>
<string>PASTE YOUR LONG HEX STRING HERE!</string>
You should end up with something like this:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Kernel</key>
<string>mach_kernel</string>
<key>Kernel Flags</key>
<string>Yes</string>
<key>device-properties</key>
<string>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</string>
<key>Graphics Mode</key>
<string>1680x1050x32</string>
</dict>
</plist>
NOTE: You don't need the bit at the bottom where I have put
<key>Graphics Mode</key>
<string>1680x1050x32</string>,
this just gives better res while the Grey apple is doing it's spinny thing.
Close and save the file. If it doesn't let you save it, save as a copy elsewhere and you can move it back replacing the old one. Make sure to save a backup copy of the original just in case.
Repair Permissions with disk utility, you should see the com.apple.boot.plist appear and be corrected.
13. Power down and install both your cards in their correct PCIe slots.
14. Boot up again - Hopefully you have 2 cards showing in System profiler
Don't hold me responsible if you break your own install but this does work for some, but not all.
THIS MAY NOT WORK ON MOTHERBOARDS WITH NVIDIA CHIPSETS!
aquamac: 01/06/08
modified: 10/11/08
FOOTNOTE: On Gigabyte and some other boards, you will need to set your bios to boot from PEG2 and put your main card in the second PCIe slot. Failure to do this will result in a kernel panic or your system will hang at the blue boot screen.
Thanks go out to the Netkas/Matrix and all who were involved in the writing of GFX Strings!
PLEASE NOTE - SNOW LEOPARD 10.6 - 10.6.3 When making your output file - that must be done booted from Leopard only or upgrade to 10.6.4 onwards. Snow Leopard 10.6 - 10.6.3 gives the wrong info in the output file and you WILL NOT get QE/CI working!
This is now working in 10.6.4 onwards again!
You may well want to print out these instructions first and go over the procedure first!
You have to have EFI V8 or Chameleon 1 or 2. It will not work with EFI V7 to V7.4
Download one of the following files to your desktop:
Cards for Leopard/Snow Leo Below:
Dual GeForce 8800 GTX 768 mb cards: Click to Download
Dual GeForce 9800 GTX 512 mb cards: Click to Download
GeForce 7800 GX2 512 mb per card:Click to Download
Quadro FX 4500 x2 1024mb:Click to Download
Dual GeForce GTX 280 1024 mb cards: Click to Download
1. Unpack it and drag both the gfxutil program and the in.plist onto your desktop.
Open in.plist with either the Apple "Property List Editor" that comes with Apple developer tools or download Plist Edit Pro for free:
www.macupdate.com/download.php/14363/PlistEditPro.dmg
2. Open up in.plist with one of the above programs, you should see something that looks like this:
Click on the first small triangle next to PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0) and expand the display as below:
3. Where you see NVIDIA GeForce 9800 GTX DDL, change this to the name of your graphics card that you want to use by double clicking it and overwriting the supplied info.
4. Next, do the same with the "00000020" value next to VRAM,totalsize. The default entry is for a 512 mb card, but you need to replace the existing value with one for your card. Here are the values you need for differing Ram amounts of graphics cards.
<00000008> - 128Mb
<00000010> - 256Mb
<00000014> - 320Mb
<00000020> - 512Mb
<00000028> - 640Mb
<00000030> - 768Mb
Only enter the figures between the arrow heads as the original default info!
4. Now expand the second "PciRoot(0x0)/Pci(0x6,0x0)/Pci(0x0,0x0)" and change the info for your second card, the name of the card and the ram size using the info supplied above.
5. Click on File and save the file.
6. Remove either NVInject, NVKush or Natit from your extensions folder. You must do this otherwise GFX strings will not work. Backup the one you use somewhere safe.
7. Shutdown your computer.
8. Place the card you want to use as your main card in your first PCIe slot but NOT the second card.
9. Boot your computer, you may have crappy resolution as you will currently not have QE & CI.
10. Open up the Terminal program in OSX and type the following:
cd ~/desktop (then hit return)
then type:
./gfxutil -f display (then hit return)
You should get something along these lines printed out in the terminal:
PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)
Open up your in.plist again this time with text editor and overwrite the first instance of this information at the top (not the info half way down).
Save the info by clicking File then Save.
You need to power down your PC and REMOVE the first graphics card. Install the second card in THE SECOND PCIe slot, NOT the first slot. This is important.
Reconnect your monitor and fire up your PC again.
11. Open up the Terminal program in OSX again and type the following:
cd ~/desktop (then hit return)
then type:
./gfxutil -f display (then hit return)
You should get something along these lines printed out in the terminal:
PciRoot(0x0)/Pci(0x6,0x0)/Pci(0x0,0x0)
Open up your in.plist with text editor again and overwrite the SECOND instance of this information HALF WAY DOWN (not the info at the top).
Save the info by clicking File then Save.
Phew! You still with me....Good, the hard work is done. You now have a complete in.plist file.
12. Open up the Terminal program in OSX again and type the following:
cd ~/desktop (then hit return)
then type:
./gfxutil -i xml -o hex ./in.plist ./out.hex (then hit return)
you should now have a new file called out.hex on your desktop. Open this file with text editor and it will have your new graphics string. It should look something like this:
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
Copy it and open the finder and head to /Library/Preferences/SystemConfiguration and drag a copy of your com.apple.boot.plist to the desktop. Open it up with Text Edit and under the last string, which is usually the......
<key>Kernel Flags</key>
<string>Yes</string>
add a couple new lines as follows
<key>device-properties</key>
<string>PASTE YOUR LONG HEX STRING HERE!</string>
You should end up with something like this:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Kernel</key>
<string>mach_kernel</string>
<key>Kernel Flags</key>
<string>Yes</string>
<key>device-properties</key>
<string>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</string>
<key>Graphics Mode</key>
<string>1680x1050x32</string>
</dict>
</plist>
NOTE: You don't need the bit at the bottom where I have put
<key>Graphics Mode</key>
<string>1680x1050x32</string>,
this just gives better res while the Grey apple is doing it's spinny thing.
Close and save the file. If it doesn't let you save it, save as a copy elsewhere and you can move it back replacing the old one. Make sure to save a backup copy of the original just in case.
Repair Permissions with disk utility, you should see the com.apple.boot.plist appear and be corrected.
13. Power down and install both your cards in their correct PCIe slots.
14. Boot up again - Hopefully you have 2 cards showing in System profiler
Don't hold me responsible if you break your own install but this does work for some, but not all.
THIS MAY NOT WORK ON MOTHERBOARDS WITH NVIDIA CHIPSETS!
aquamac: 01/06/08
modified: 10/11/08
FOOTNOTE: On Gigabyte and some other boards, you will need to set your bios to boot from PEG2 and put your main card in the second PCIe slot. Failure to do this will result in a kernel panic or your system will hang at the blue boot screen.
Thanks go out to the Netkas/Matrix and all who were involved in the writing of GFX Strings!
