Comment 1 for bug 77739

Here are :

- a hald fdi policy script (/usr/share/hal/fdi/policy/20thirdparty/10-laptop-panel-mgmt-policy.fdi) which :
  * modifies the hal "laptop_panel.num_levels" property provided by buggy acpi to replace it with 21 (the correct value for my computer)
  * changes the laptop_panel.access_method not to interfere with the others sony systems.
These modifications are applied only for Sony CorporationVGN-S5M_S.

- patches for hal-system-lcd-{get,set}-brightness-linux (hal 0.5.8.1-4ubuntu1)

With these, all works fine on my computer using gnome-power-manager.