> ...and I should mention that it also works on the newer (USB 2.0) pbooks > and the iMac. I'll fix the brightness to adjust properly nevertheless. I suggest you at least check the model by checking the OF device-tree node name. From experience, it tends to be different for each setup, so at least it gives you an easy way from the kernel to know the model you are running on, and thus check that you have a proper range of values for this model. Ben.