Additional information:
Once 13.10 is installed, it still boots to an off backlight; BUT I can use the 
laptop screen brightness keys to increase backlight power and see the screen, 
although it is somewhat washed out. Each time the laptop is restarted, however, 
the setting is lost and it boots to black.

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https://bugs.launchpad.net/bugs/797537

Title:
  Natty 11.04 Gateway NV79 BACKLIGHT TURNED OFF DURING BOOT

Status in “xserver-xorg-video-intel” package in Ubuntu:
  Expired

Bug description:
  Binary package hint: xserver-xorg-video-intel

  BUG creeped into Maverick 10.10; wasn't in Lucid 10.04. Still exists in Natty 
11.04 (can be verified with Natty distribution CD).
  During boot sequence, display backlight is turned off. Also occurs when 
waking up from suspend. Graphics are being output but cannot be seen because 
backlight is off.  Plugging in an external monitor and setting to mirror 
displays turns on the backlight. (which will go off again upon suspend). Seems 
related to i915 chip settings.

  same bug referenced in detail in: 
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/685727  
and
  
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/705949 
.. both bugs which have languished for ages with no response and have been 
inexplicably closed.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/797537/+subscriptions

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