On Thu, 02 Oct 2008, Paride Legovini wrote:
> reproduce the problem there's no delay but then I get two acpi
> event for every brightness change:

That's per BIOS design.  The video event is an active event, that X.org will
react to, etc.

The HKEY 5010 event is Lenovo's "hey OSD application, this is a hint that
the brightness changed, please notify the user" thing.  It was added on the
*60.   I am not aware of anything paying attention to that event, but
thinkpad-acpi exports it in any case.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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