Bug#681743: i915: display backlight brightness initially set to zero on boot
> Using an HP dm4t-1200 laptop.
> The backlight is set to zero brightness as soon as the kernel begins to load.
> In my case I can set the brightness higher by simply using the appropriate fn
> key combination, but until then everything looks black.
> It looks to me like the following is the fix:
I'll try to find some moments to look into this this week. If I don't get
back to you soon, feel free to ping me. Those commits are both in 3.5-rc1,
so if you get a chance to test 3.5-rc1 or newer, that would also be useful.
Hope that helps,