Thread: Request - Graphics Power Management for GeForce 8400GS 512MB DDR3 64-bit

Please, somebody help me...!

I have ZOTAC nVIDIA GeForce 8400GS @ 512 MB DDR3 64-bit PCI-e VGA.

Using Mac OS X Snow Leopard 10.6.3 - Lion 10.7.3 on my Lenovo L-IG41C1 Mobo with Intel 82801G Southbridge ICH7 the Q/E & C/I work perfectly by using modified NVDANV50Hal.kext.., but my USB Mouse "jittering, leak, I couldn't move it on and then my System freeze"...!? If I'm using the G41 OnBoard VGA (x4500); my System work fine with no Q/E & C/I.

So, I assume that Graphics Power Management for my PCI-e caused the problem.
Please, somebody generate & build this one for my 8400GS PCI-e VGA...

Thanks & regards.

Try use EFI and put in device propertise at Boot.plist you can try mine:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Kernel Flags</key>
<string>npci=0x2000 USBBusFix=yes GraphicsEnabler=yes EthernetBuiltIn=yes</string>
<key>device-properties</key>
<string>6c0200000100000001000000600200000d000000 02 010c00d041030a000000000101060000010101060000007fff 04001e00000072006f006d002d007200650076006900730069 006f006e0000002e0000006e5669646961204765466f726365 2038343030204753204f70656e474c20456e67696e65205b45 46495d22000000400030002c00640065007600690063006500 5f00740079007000650000000b000000646973706c61791000 00004e00560043004100500000001800000004000000000003 000c00000000000007000000000e0000006e0061006d006500 00000b000000646973706c617914000000400030002c006e00 61006d0065000000120000004e5644412c446973706c61792d 41100000006d006f00640065006c0000001a0000006e566964 6961204765466f72636520383430302047530e0000004e0056 0050004d000000200000000100000000000000000000000000 000000000000000000000000000014000000400031002c006e 0061006d0065000000120000004e5644412c446973706c6179 2d4220000000400031002c0063006f006d0070006100740069 0062006c00650000000e0000004e5644412c4e564d61632200 00005600520041004d002c0074006f00740061006c00730069 007a0065000000080000000000002020000000400030002c00 63006f006d00700061007400690062006c00650000000e0000 004e5644412c4e564d616322000000400031002c0064006500 76006900630065005f00740079007000650000000b00000064 6973706c61791c0000006400650076006900630065005f0074 0079007000650000000f0000004e5644412c506172656e74</string>
</dict>
</plist>

BTW, with same VGA but other CPU Chipset, it run perfectly with no problem (on my nForce 630i for example).

Some problems occur on my Lenovo G41 Mobo. I've using a lot of methods from many forums to fix this problem; modify xxx.kext, EFI String, Natit, but nothing work.

But, someone on another forum say that:
"...if you're experiencing slow performance with any nVidia card (namely the Quadro and Fermi platforms) just disable/remove the AppleGraphicsPowerManagement kext in /S/L/E/ and you'll see that you'll write to disk less (??? I have no idea why) and you'll also have a bunch more free RAM."

What do you think about this, should I remove my AGPM to the trash...!? Thanks and regard...