I have my MacBook connected to an external monitor (via HDMI), and the brightness of MacBook monitor is set to 50% of max brightness . I usually put my display to sleep when I leave my computer for a break, and everytime I wake it up, the MacBook monitor will be set to maximum again.
Any idea how do I fix it so that when I wake up the display, I do not need to adjust the screen brightness down again?
I am running Lion on an early 2009 MacBook.