3

I feel almost stupid asking a brightness question with all the similar ones out there, but I haven't yet found a working solution, so here goes:

System

HP dv3500 series laptop (dv3550eo - Scandinavian version) with a GeForce 9300M GS graphics card, drivers version 280.13 running on Ubuntu 11.10.

The system keys for changing brightness are Fn+F7 and Fn+F8, respectively, but nothing happens - I can't change the brightness.

A few of the tricks I've tried:

I'm guessing it's a driver problem, but I've already installed the nvidia drivers (there was a popup upon first restart after install).

I apologize in advance for not reiterating the rest of the suggested fixes I've tried, as they are too numerous for me to remember, and have frankly left me exhausted.

I hope a user with a similar computer to mine has found a fix, elsewise I fear this shall be the fourth time over the years I've given Linux a crack only to give it up again within a fortnight :-/

Fingers crossed for a solution.

1

Please try smartdimmer. I've succeeded using it via command line, now looking a way to bind it to fn+f7 and fn+f8.

0

Open /etc/default/grub with your favorite text editor, ie gedit

gksudo gedit /etc/default/grub

Look for the line

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

and add acpi_backlight=vendor to it so that it reads

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Update grub to include the changes done

sudo update-grub

Reboot

sudo reboot
  • Thanks for the suggetion. I've tried that one as well, but it doesn't solve the problem for me. – MartinDK Feb 14 '12 at 14:14

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.