This is more likely a 'hal' or kernel issue: /usr/share/hal/scripts/hal-system-lcd-set-brightness
Currently has the following code for Sonys: elif [ "$HAL_PROP_LAPTOP_PANEL_ACCESS_METHOD" = "sony" ]; then # echo "{1..8}" > /proc/acpi/sony/brightness # http://popies.net/sonypi/2.6-sony_acpi4.patch echo "$((value + 1))" > $HAL_PROP_LINUX_ACPI_PATH Does this work on your laptop. Could you also please include the DMI decode data for your laptop as detailed on the HotkeyResearch page above so that we can identify your laptop. ** Changed in: gnome-power-manager (Ubuntu) Sourcepackagename: gnome-power-manager => hal Importance: Undecided => Wishlist Status: Unconfirmed => Needs Info -- Brightness Settings Don't Work https://launchpad.net/bugs/76274 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs