Fixing Nvidia flickering in Ubuntu
I suddenly got tired about Nvidia flickering, so I googled for a while and I found a workaround that disables PowerMizer. PowerMizer changes GPU clock speed on demand, causing a flicker every time it changes. The workaround consists on fixing the clock speed.
Here is my /etc/modprobe.d/options
options nvidia NVreg_RegistryDwords='PerfLevelSrc=0x2222' options nvidia NVreg_Mobile=1
Fixed on Vaio VGN-FE11S with Ubuntu 10.04 and NVidia driver 195.36.15
I hope some day Nvidia releases a fixed driver.