FN-keys in Kubuntu 8.10

Running Kubuntu 8.10 for a while I'm pretty happy with the performance on my AA0 110 L. Most worked out of the box or I was able to run with the help of the forum or with Ubuntu Help https://help.ubuntu.com/community/AspireOne110L
But I'm still struggeling with some function keys:

FN-F4 - Suspend doesn't work (suspend in general works from K-Menu)
FN-F5 - VGA monitor switch doesn't work

Anyone with experience in this?

 

I haven't tried to use a external monitor, but fn-f4 doesn't work for me too. And I can't tell KDE to use it in system settings, as it isn't recognized.

 

In addition to my initial post I have to add the following:
With Xubuntu 8.10 beta the suspend on FN-F4 worked, in Kubuntu it doesn't
With 'xev' the FN-F4 gives as a result the keycode 150. Nevertheless it's not possible to assign the suspend to this key combination in KDE systemsettings.