I've been running Ubuntu 14.04 on my laptop, a Sony Vaio VCGEP33F, but a few days ago I began using Nvidia drivers (331.79) This laptop also has an Intel integrated GPU, but I have disabled it in the BIOS, and so long the OS has not noticed it.
My question is the following, since I started using Nvidia drivers, sometimes as I boot up the computer, after GRUB (I have windows 8 installed along Ubuntu) the screen will go black, with no backlight and so it will stay. May I flash a light at the screen I can see it'working, I can login, but cannot see crap.
If I reboot the computer several times (Itś random, and between 3 or 7) sometimes I see a nvidia logo and that is when the backlight will be on, else I will be stuck with no backlight at all. Then, if I connect a display to the VGA output during boot and disconnect it after logging in the laptop's screen will be on.
I've been researching on the issue,but have not found anything like this, many people need to use bumblebee, me nope as I disabled the other GPU, many people have no brightness cntrol, which I have if the screen is on.
Although annoying, I said it solves itself but I would like to know how to fix this! thanks in advance.