Display brightness keys suddenly stopped working

[Chris Green]

On Mon, Feb 20, 2012 at 03:38:42PM +0100, Clemens Eisserer wrote:
> HI,
> 
> I just realized the display brightness function keys are no longer
> working, whereas xfce used to interpret those key-presses correctly
> some time ago.
> I would be happy about some hints where to start looking for potential problems.
> 
It's not just me then!  :-)

I have xubuntu 11.10 on an Acer laptop and have to boot back into XP to
change the brightness.  As you say I seem to remember that it *did* work
once.

-- 
Chris Green