I got Ubuntu 11.10, with gnome-shell as desktop manager, and whenever I boot(select ubuntu from grub, just so you know where we are) it gives no screen, and if I wait a minute orso, and press the powerbutton, it will activate my screen and turn off(normal way). Now I found when I just turn it off in mid boot, then when I select ubuntu from grub(not the recovery one) it wil lcheck for errors, it will find no errors but my screen is turned on. I have no clue why my laptop does this.
tl;dr screen will only be turned on when there is a error check involved in the boot.
Anyone?!
Try to do this in you terminal:
Look for:
Change it too :
And update Grub:
And see if it helps if not post wath happens.