cdleon/macbook-pro-2011-defective-gpu-fix-v2-better-ux.md

## macbook-pro-2011-defective-gpu-fix-v2-better-ux.md

      
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              macbook-pro-2011-defective-gpu-fix-v2-better-ux.md
            
          
    Improving heat management after macbookpro 2011 discrete GPU fix, also a script to automate part of the fix process

Taken from StackExchange


Thanks to LangLangC

NOTE: This is experimental; works for some people, not for others
Improved thermal and power management
Open Terminal.app
Create login hook folder for thermal and power management
sudo mkdir -p /Library/LoginHook
Create login hook file
sudo nano /Library/LoginHook/LoadX3000.sh
Add folowing contents when nano opens
#!/bin/bash
kextload  /System/Library/Extensions-off/AMDRadeonX3000.kext
pmset -a force gpuswitch 0    # undocumented/experimental
exit 0

Use ctrl + o to save and ctrl + x exit

Make it executable
sudo chmod a+x /Library/LoginHook/LoadX3000.sh
Register login hook
sudo defaults write com.apple.loginwindow LoginHook /Library/LoginHook/LoadX3000.sh
Reboot normally
Check that proper kexts exist
kextstat | grep AMD
The command above should display
... com.apple.kext.AMDLegacySupport (1.5.1) ...
... com.apple.kext.AMD6000Controller (1.5.1) ...
... com.apple.kext.AMDSupport (1.5.1) ...
... com.apple.kext.AMDLegacyFramebuffer (1.5.1) ...

And this
... com.apple.AMDRadeonX3000 (1.5.1)  ...

should also appear on the list
Reboot normally
Boot into single user recovery by pressing on boot
Command + r + s
Modify NVRAM
nvram boot-args="-v agc=0"
Reboot
reboot
Script ot make part of the process automatic
Open terminal
Create script
sudo nano /force-iGPU-boot.sh
Add contents
#/bin/sh
sudo nvram boot-args="-v"
sudo nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00
exit 0
Make exectuable
sudo chmod a+x /force-iGPU-boot.sh
When booting into single user mode (Cmd + r or CMD + r + s) use
sh /force-iGPU-boot.sh