Internal display off when lid opened?

Hey guys!
Just installed Lion and one thing I immidiately noticed is the way Lion handles internal display when external display is plugged in. I use a big 24-inch display with my early 2011 MacBook Pro. I like to open the lid for better WiFi connection but dont really like the display to turn on. In Lion, it automatically does so I have two displays.
Is it possible to open the lid but still keep the internal display off and only the external one on?
Thanx!

Support are quoting Apple's engineers as saying it is "expected behaviour" under Lion for the MBP's internal display to reactivate upon opening the lid, even if you want to use only your external display. A new version of the clamshell mode-related knowledgebase article (replacing HT3131) is due shortly confirming this.
This is despite:
- the obvious temperature-related benefits that were achievable (under Snow Leopard) by opening your MBP lid whilst continuing to output solely to, say, a 27" cinema display
- the wifi connectivity benefits of having the lid open
- the waste of energy and inefficient use of graphics processing power in needlessly running two active screens (ie if running your MBP in clamshell mode would otherwise make it too hot and/or noisy or you need it open for wifi)
- the negative longer-term impact on the battery and other components from running the MBP any hotter than it needs to be.
If you would like to have the previous behaviour restored, please lobby Apple to change how Lion handles clamshell mode. Options available to them include changing Lion's expected behaviour or adding a user-selectable option within System Preferences.
Feedback can be submitted here:
http://www.apple.com/feedback/macosx.html

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Solved!
Go to Solution.

No driver or BIOS will fix this. This is the normal behavior.
Here is how it works.
AC Power: You close the LID it will hibernate. Open the Lid it will power back on.
Battery Power: You close the LID it will hibernate. Open the Lid it will not power back on.
Combinations I believe it will behave like Battery Power.
Reason behind the change is battery power. They do not want you to power back to your document with a low battery. Chop it up to the possibility of lost of data. Like many other Computer manufactures they are paranoid of being sued.
I had asked this same question a while back. I also checked it out on the same model you have. I confirmed the first two scenarios above. It works just as I listed it above.
I hope this helps. I think you machine is working normally. This should apply to all current models and future models unless they change the spec. I guess the second tech was somewhat right, but he should of explained it so you understood it.
Good Luck,

Internal display off when lid opened?

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