I have the same problem with my new acer 5735z.
As soon as it comes to the grub screen my laptop display turns black.
If I use an external monitor I am able to boot into ubuntu and add the
"setpci"-script to the sleep.d and rc.local files. But as soon as I i.e. change
display settings the screen ge
The problem seems to be solved for me after performing the following
steps which are a combination of littleendians solution and a post from
unknown47 in this forum entry:
http://ubuntuforums.org/showthread.php?t=1743301.
1. Goto edit-mode in grub and add "acpi_osi=Linux" to the line that says "..