I think problem = Nvidia powermizer
Powermizer work 3 performance level
0 - 169Mhz
1 - 275Mhz
3 - 475 Mhz
My laptop default performance level = 0
NV Clock = 169Mhz (with screen refresh problem)
I run this script in gnome-terminal:
while true; do
if on_ac_power; then
nice /usr/bin/nvidia-settings -q all > /dev/null
fi
sleep 25;
done
performance level automatically switch to 2
NV Clock = 475Mhz
And no screen refresh problem!!!
Sorry very poor english....
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Screen refresh problems with nvidia on intrepid
https://bugs.launchpad.net/bugs/269904
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