Aspire 5336

JasonPC
  7 years ago
  Acer (Laptop or Netbook)
  Mint (older version)
  Works fine with some minor problems
What works:

Everything excluding brightness adjustment once back light is fixed

What doesn't work:

Back-light until fixed

What was done to make it work:

Shine a bright light on the screen to log in and open the terminal,( or alternately log in and open terminal blind) then enter:

sudo setpci -s 00:02.0 F4.B=0
(enter password if light doesn't come on)

When you press enter the light should come on and stay on until you log out, switch user reboot etc. To make it stay on you will need to then enter (as root):

gksudo gedit /etc/rc.local


Then in the new window enter ( you may need to enter your password first ) the following above the line that says "exit 0" at the bottom of the page:

while [ true ];do
sleep 1
sudo setpci -s 00:02.0 F4.B=0
done

The light should now come on automatically as normal.

Please note: when you use attempt to adjust the brightness you'll see the the display on the screen to tell you that it's changing but it doesn't although I think that changing the "0" for Various combinations such as "00" or "ff" may work.

Additional notes:

Follow these instructions to the letter and all should be fine, how ever the slightest mistake and the chances are it will not work.

This method should work for all Ubuntu based distributions as well.