Here's some background info:-
525]About this Mac
525]Hardware Overview:
525] Model Name: Mac Pro
525] Model Identifier: MacPro3,1
525] Processor Name: Intel Core 2 Duo
525] Processor Speed: 1.87 GHz
525] Number of Processors: 1
525] Total Number of Cores: 2
525] L2 Cache: 2 MB
525] Memory: 6 GB
525] Bus Speed: 1.07 GHz
525] Boot ROM Version: MP31.006C.B05
8]ATI Radeon HD 5450:
8] Chipset Model: ATI Radeon HD 5450
8] Type: GPU
8] Bus: PCIe
8] Slot: Slot-1
8] PCIe Lane Width: x16
8] VRAM (Total): 1024 MB
8] Vendor: ATI (0x1002)
8] Device ID: 0x68f9
8] Revision ID: 0x0000
8] ROM Revision: 113-B7710C-176
8] EFI Driver Version: 01.00.318
dave$ sudo kextstat | grep AMD
63 2 0xffffff7f80ba9000 0x1d8000 0x1d8000 com.apple.kext.AMDSupport (8.0.0) <62 10 9 7 5 4 3 1>
64 0 0xffffff7f80d81000 0x41000 0x41000 com.apple.kext.AMD5000Controller (8.0.0) <63 62 10 9 5 4 3 1>
75 0 0xffffff7f80e62000 0x3cd000 0x3cd000 com.apple.AMDRadeonAccelerator (1.0.0) <74 73 62 10 7 5 4 3 1>
77 0 0xffffff7f812ca000 0x13000 0x13000 com.apple.kext.AMDFramebuffer (8.0.0) <63 62 10 9 7 5 4 3 1>
dave$ ioreg | grep ATY
| | | | +-o ATY,Eulemur@0 <class AtiFbStub, id 0x10000027c, registered, matched, active, busy 0 (7669 ms), retain 8>
| | | | | +-o ATY_Eulemur <class AMDFramebuffer, id 0x100000282, registered, matched, active, busy 0 (557 ms), retain 16>
| | | | +-o ATY,Eulemur@1 <class AtiFbStub, id 0x10000027d, registered, matched, active, busy 0 (1 ms), retain 8>
| | | | | +-o ATY_Eulemur <class AMDFramebuffer, id 0x100000287, registered, matched, active, busy 0 (0 ms), retain 13>
dave$ ls -als /extra/extensions
total 16
0 drwxrwxrwx 11 root wheel 374 18 Jul 2011 .
0 drwxr-xr-x 8 root wheel 272 28 Aug 11:57 ..
16 -rwxr-xr-x 1 root wheel 6148 18 Jul 2011 .DS_Store
0 drwxr-xr-x 3 root wheel 102 25 Jul 2009 AHCIPortInjector.kext
0 drwxr-xr-x 3 root wheel 102 10 Aug 2011 AppleACPIPS2Nub.kext
0 drwxr-xr-x 3 root wheel 102 10 Aug 2011 ApplePS2Controller.kext
0 drwxr-xr-x 3 root wheel 102 2 May 22:55 FakeSMC.kext
0 drwxr-xr-x 3 root wheel 102 20 Sep 2009 Intel82566MM.kext
0 drwxr-xr-x 3 root wheel 102 22 Aug 2009 NullCPUPowerManagement.kext
0 drwxr-xr-x 3 root wheel 102 7 Aug 2011 Patched_10.7_AppleRTC.kext
0 drwxr-xr-x 3 root wheel 102 19 Aug 2009 lspcidrv.kext
dave$ ls -als /extra
total 32
0 drwxr-xr-x 8 root wheel 272 28 Aug 11:57 .
0 drwxrwxrwx 40 root admin 1428 28 Aug 14:45 ..
16 -rwxr-xr-x 1 root wheel 6148 23 Mar 09:24 .DS_Store
0 drwxrwxrwx 11 root wheel 374 18 Jul 2011 Extensions
0 drwxrwxrwx 6 root wheel 204 25 Aug 02:01 RemovedExtensions
0 drwxr-xr-x 3 root wheel 102 28 Aug 11:57 Themes
8 -rw-r--r-- 1 root wheel 678 28 Aug 11:57 org.chameleon.Boot.plist
8 -rw-r--r-- 1 root wheel 701 25 Aug 18:06 smbios.plist
dave$ more /extra/org.chameleon.Boot.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com...yList-1.0.dtd">
<plist version="1.0">
<dict>
<key>EthernetBuiltIn</key>
<string>Yes</string>
<key>GenerateCStates</key>
<string>Yes</string>
<key>GeneratePStates</key>
<string>Yes</string>
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>Kernel</key>
<string>mach_kernel</string>
<key>Kernel Flags</key>
<string>-v -f</string>
<key>PciRoot</key>
<string>4</string>
<key>SMBIOS</key>
<string>/Extra/smbios.plist</string>
<key>Theme</key>
<string>Choose_Your_OS</string>
<key>USBBusFix</key>
<string>Yes</string>
</dict>
</plist>



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