MBP 2011, Screen Brightness in Energy Saver mode issue?

hi,
got a new 2011 MBP 17', setup dim in energy saver mode & plugged in an external DVI monitor via Thunderbolt port. energy mode dims & blanks LCD but the external screen does not. It does however then turn off and lock when display sleep is reached.
anyone any ideas if this is just a "feature of the new port" that we need to ask apple about or have i missed something?
FYI, energy saver pref screen pops up only on 1 screen. displays pref pops up on both but currently only the MBP LCD screen has a brightness and auto adj settings. external screen just has resolutions & refresh rate options.
thanks,
Simon.

Nope - on my wife's MB (i.e. 13" MacBook, unibody/late 2008), there's no 'custom setting' or 'Details' when clicking on the menu bar battery icon. There is a shortcut to the Energy Saver preference pane, but no option to control brightness in that preference pane other than the checkbox I mentioned above. You can set timers for display sleep, etc., of course.
So, what I see on my MBP, what I see on my wife's MB, and what you're seeing on your MBP seem to be the same. If you have access to a MacBook, check again - if you find the setting your thinking of, post a screenshot...

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MBP 2011, Screen Brightness in Energy Saver mode issue?

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