additiion: I found out that the P35 has a BIOS option "BOOT / Brightness Control" and I swichted it to "User Control" from "Auto-Dim"
and it seems that the problem happend now only just after login - but then it works.
In Edgy and Feisty the gnome-power-manager works without a BIOS change.
additiion: I found out that the P35 has a BIOS option "BOOT / Brightness Control" and I swichted it to "User Control" from "Auto-Dim"
and it seems that the problem happend now only just after login - but then it works.
In Edgy and Feisty the gnome-power-manager works without a BIOS change.