Ubuntu
guidance-power-manager package

  1. Bug #140782
  2. Comment #23

Comment 23 for bug 140782

Revision history for this message
Javier Mena (javimena) wrote :

The brightness keys in my vostro 1000 and Ubuntu 7.10 are completely dead. Before upgrading they keys behaviour was vey weird.

I still don't know where is the problem, and I don't have any solution.

I just can change the brightness manually using (*without* blacklisting video module). At least is a temporary solution to me:

First, view all the possible levels in LCD brightness file:

cat /proc/acpi/video/VGA/LCD/brightness

choose one, say X level (for example 75), and
echo 75 | sudo dd of=/proc/acpi/video/VGA/LCD/brightness

Adding the option 'no_automatic_changes=0' doesn't works completely for me. It just let me push the brightness down (Fn+UP doesn't works) and only using a pure terminal (i.e. CTRL+ALT+F1).

The "brightness miniapplication" (I don't know the exact name in english) doesn't works. The gnome-power-manager doesn't shows me any option to adjust the brightness.

BIOS: 2.6.1