Comment 52 for bug 573984

Solved!

I have a nv5911e, core i5. Ubuntu 10.10

1. Bios updated to v1.22, (this step alone don't solve the problem)
2. I used the kernel form:
    https://launchpad.net/~kamalmostafa/+archive/linux-kamal-mjgbacklight
   Thanks Kamal!!
3. I added
    /etc/default/grub:

   GRUB_CMDLINE_LINUX="acpi_backlight=vendor"

4. Run:
    sudo update-grub

I have not detected any new problem with kernel or bios change. Not overheating detected yet