Ubuntu
nvidia-graphics-drivers-180 package

  1. Bug #95444
  2. Comment #197

Comment 197 for bug 95444

Revision history for this message
Thunderbird (thunderbird-linuxhardware) wrote : Re: [Bug 95444] Re: No Screen Backlight Control; Notebooks (Vaio, Macbook, HP/Compaq, Samsung, Zepto et al.) with Nvidia Geforce8/Geforce9/Quadro series graphics

What might be useful is the following on a fresh boot of your system
without using the nvidia driver and also without a framebuffer driver
(a framebuffer driver could prevent an image restore).

Download vbtracetool (git clone
git://anongit.freedesktop.org/~stuart/vbtracetool/), compile it and
then it like mentioned in the QUICKSTART file bundled with it. It will
take 30-60s and then bzip2 the resulting file. The file contains the
boot log of your video bios and might show me where the info I need in
the bios is located.