How to save nvidia powermizer settings after reboot

This has been bugging me for a while as I notice there is now way to force powermizer to always use level 3 even after a reboot.

Luckily I found a handy youtube video showing how to do this simply by adding an extra line to a file.

Here it is:  http://www.youtube.com/watch?v=DEOBZWOUizc

It’s a simple matter of adding a single line of text:

Option “RegistryDwords” “PerfLevelSrc=0x3322; PowerMizerDefaultAC=0x1”

to the following file:

xorg.conf

located at:

/etc/X11

Please note that this line is added to the “device” part of the file

eg

Section “Device”
    Identifier     “Device0”
    Driver         “nvidia”
Option “RegistryDwords” “PerfLevelSrc=0x3322; PowerMizerDefaultAC=0x1”
    VendorName     “NVIDIA Corporation”
EndSection

The net result of this is that when you restart and look at nvidia-settings you get this:

Screenshot from 2013-12-06 21:57:59

and it stays on level 3

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