Comment 10 for bug 764195

Guys, the best thing i could manage until now was install the ¨experimental¨ drivers for nvidia.

When I open the ¨additional drivers¨, he gives me two options, the proprietary and the open source.

Using the proprietary, I can´t control the backlight (stays at 100%), but i can use unity. By the way, in this situation, the ¨additional drivers¨ dialog says the nvidia driver is installed but not ¨currently in use¨, just like bro described.

Using the open source ¨experimental¨ alternative, the backlight control works the same way than worked with no special driver installed at all. In that situation, I can´t use unity, but I can control brightness.

One thing worth saying is that even when I can control the backlight (with nvidia open source, or with no special driver), this control is strange. I only have four degrees of light and I can vary among them with the four lower degrees of the graphic indicator. All the higher levels are useless.

I´m using the nVidia Corporation GT218 [GeForce 310M] (rev a2) on a Sony Vaio VPCCW21FX.