Brightness control on xps13 ultrabook

I have just installed OpenSuse 12.3 on my XPS13 Ultrabook (see my install story here for people interested in purchasing the same model).

Everything works perfectly, except the Brightness adjust does not work. I found a bug report here, but I perhaps somebody here has an idea on how to fix this?

Thanks

did you already do this ?

echo 0 > /sys/class/backlight/intel_backlight/brightness
then everything is fine until next reboot or suspend/resume.