Ubuntu
hal package

  1. Bug #207473
  2. Comment #43

Comment 43 for bug 207473

Revision history for this message
Sympy (sympathy4no1) wrote : Re: Screen brightness double level changes

Well, the original post mentions that without g-p-m the brightness transition works smoothly, so I thought a fix could also be possible with Gnome.

My card is a GeForce 8400M GS (I have a Vostro 1400 lappy) and I have this problem with both nv and nvidia-glx-new. Please let me know of any technical details I can give to help.

What I find curious is that I see a lot of people solving this problem by tweaking /etc/acpi/video_brightnessdown.sh and /etc/acpi/video_brightnessup.sh, while for me changing those files - even deleting them - has no effect all. It seems they're not what the system is calling when I press the fn brightness keys.

This what lshal -m reports with a single touch to fn + up:

07:27:06.173: platform_i8042_i8042_KBD_port_logicaldev_input condition ButtonPressed = brightness-up
07:27:06.178: computer_logicaldev_input_1 condition ButtonPressed = brightness-up
07:27:06.178: computer_logicaldev_input condition ButtonPressed = brightness-up
07:27:06.364: platform_i8042_i8042_KBD_port_logicaldev_input condition ButtonPressed = brightness-up