1

I have Kubuntu 13.04 installed on an HP envy DV7 with the dual graphics chipsets intel 4000 and Nvidia 630M. And when I try to reduce my screen brightness it doesn´t actually go down until it reaches 10%. I´m running the standard nouveau drivers, no proprietary drivers.

Braiam
  • 67,791
  • 32
  • 179
  • 269
Frank Barcenas
  • 1,361
  • Nvidia 630M is a chipset with CUDA ? Here is problem with CUDA (and Optimus) solved : http://askubuntu.com/questions/311151/how-can-i-install-nvidia-driver-gt-520-and-cuda-5-0-in-ubuntu13-04/311154#311154 – dschinn1001 Oct 04 '13 at 11:10

1 Answers1

2

Try it once.. It has solved all problems about brightness! Including mine!!

  • Open terminal ( Ctrl+Alt+T ) and type:

    sudo cp /etc/default/grub /etc/default/grub.bak
sudo gedit /etc/default/grub

    You will find this line in the new opened window: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

  • Change it to:

    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

  • Save and close the window and type this in the terminal:

    sudo update-grub

  • Restart your system..

Saurav Kumar
  • 14,916