Hi everyone!

I have just install ubuntu 9.04 and I was trying to adjust the LDC brightness.. I have tried many things, but nothing seem to work.
I have a sony vaio, so I tried to use spicctrl, but it did't work.
I tried through gconf-editor -> apps -> gnome-power-manager, but nothing.
I tried to change the files in /proc/acpi/video/OVGA manually, but nothing changed...

Can anyone help me?

Thank you in advance!