Thank you for everyone who commented on this thread. With the exception
of my hardware keys beings reversed, with the information on this post I
was able to get Linux to install and the back light restored. I have a
Gateway NV78.

I ended up adding "acpi_osi=Linux" to /etc/default/grub, "setpci -s
00:02.0 F4.B=00" to etc/rc.local, and installing the back light patched
kernel. "acpi_osi=Linux" restored backwards functionality to the
hardware buttons, "setpci -s..." set my back light to max on boot, and
the back light patched kernel allowed me to use the hardware buttons
after going into suspend mode or if the screen dimmed.

I also ended up having to use "i915.broken=1/i915.alse_backlight=1" to
get in with the boot cd. Not sure why, but "acpi_osi=Linux" wasn't doing
it for me then.

Thank you all again!

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https://bugs.launchpad.net/bugs/765438

Title:
  On startup, the backlight is off on laptop

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