https://bugzilla.kernel.org/show_bug.cgi?id=15895





--- Comment #11 from ykzhao <yakui.z...@intel.com>  2010-05-20 06:12:53 ---
(In reply to comment #9)
> unplugging the cord also triggers display dimming, and causes "invalid
> framebuffer id"; it might just be an X thing, i dunno

Will you please boot the system into the console mode and see whether the issue
still exists when using the following command to adjust the backlight
brightness?
   >echo XXX > /sys/class/backlight/*/brightness


thanks.

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