Eu instalei o Ubuntu 12.04 no meu Toshiba Satellite L645D e o brilho da tela não funciona. Alguma sugestão?
I've installed Ubuntu 12.04 on my Toshiba Satellite L645D and the screen brightness does not work. Any suggestions?
You might want to edit your xorg.conf configuration. In a terminal, type:
sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.backup
This will make a backup of your xorg.conf file - just in case :) That being done, type:
gksudo gedit /etc/X11/xorg.conf
and under Section "Device" add the following line:
Option "RegistryDwords" "EnableBrightnessControl=1"
Save and reboot.
Perhaps this already does the trick. In that case, congratulations!
I know it is a bit late but I had the exact same problem with my girlfriend's computer, a Toshiba Satellite L645D with Ubuntu 14.04 LTS. I think this fix should also work on this computer model with other Debian-related Distros.
After searching and trying everything in the web I found this page:
Keybinding to change brightness by way of acpi brightness file?
So what I did to fix the problem was open /etc/default/grub with nano (or whatever text editor you may like):
sudo nano /etc/default/grub
And search the line that starts with: GRUB_CMDLINE_LINUX_DEFAULT="(something)" I don't remember exactly what text it had on the quotes. And make it look like:
Then update the grub with:
Finally, reboot and that's it! Hope that helps :D