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KelvinLeFabuleux Level 1 (65 points)

I use my 27" mid2010 iMac as a display for my MacPro. However after the Mac OS X recent update to 10.6.8, I noticed I am unable to control the screen brightness. Usually, I was able to do so using the iMac keyboard to adjust brightness etc. but now they do not respond in Target Display Mode. The brightness adjustment do respond if I am using the iMac but not anymore in Target Display Mode. This is a little frustrating as the screen is really bright and is hurting my eyes.

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