Public bug reported:

(From http://bugzilla.gnome.org/show_bug.cgi?id=364383 )
There is an issue in 91-reset-brightness-state.patch (and maybe some related 
patches) where even if the hardware doesn't report a valid brightness, it will 
try to dim the screen.

The patch defines LAPTOP_PANEL_CURRENT_BRIGHTNESS = -1, and then later
passes it to gpm_brightness_level_save, which compares it to itself,
causing the first IF to always be true (bypassing the error checking).

I'm not exactly sure how it crashes, as I haven't compiled it, but it
needs looking into.

Thanks Henrik Rosenø for reporting this one.

** Affects: gnome-power-manager (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

-- 
Crash on Systems that don't report Screen Brightness
https://launchpad.net/bugs/68216

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