Linux On My Samsung

@seabird is right, and sadly @Vins is also right...

A quick workaround for me was to disable UEFI mode from the BIOS and boot again. Obviously, the samsung folder is still missing but at least the backlight is working now!

Anyway, I'm planning to reinstall Ubuntu 13.04 to have all the features ...

Mmmm I don't remember... any way to find out? I've just checked under "About this computer" but it doesn't say anything about it.

Same problem here! Also tried with Ubuntu 12 but didn't work. My notebook model is 900X4C-A07US