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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

MacBook Pro - Any problems with...


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milessthomas

 
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Would there be any problems if I ran my Macbook Pro with the lid closed while using external keyboard, monitor and mouse? Any long term heat related damagae that could be caused?

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cwa107

 
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Quote:
Originally Posted by milessthomas View Post
Would there be any problems if I ran my Macbook Pro with the lid closed while using external keyboard, monitor and mouse? Any long term heat related damagae that could be caused?
Much of the heat generated by the notebook is vented through the keyboard. Heat obviously rises naturally, and with the display closed, much of that effect is negated or insulated. Although I don't think it will cause any problems in the short term, over the long run it could place added stress on your fans (they will run more frequently) which may impact their longevity. To put it simply, if you don't have to do it, I would avoid it.

Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!
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Originally Posted by cwa107 View Post
Much of the heat generated by the notebook is vented through the keyboard. Heat obviously rises naturally, and with the display closed, much of that effect is negated or insulated. Although I don't think it will cause any problems in the short term, over the long run it could place added stress on your fans (they will run more frequently) which may impact their longevity. To put it simply, if you don't have to do it, I would avoid it.
Oh I thought I had read somewhere that with the new macbook pros the heat was mostly dissipated through the rear hinge area and only the older ibooks dissipated heat through the keyboard. Thanks for the info. I don't think I'm going to use it in clamshell mode anyway I am content with the screen size of the laptop for most things. I would only use the external for adium or something so I will keep both screens up at the same time

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Quote:
Originally Posted by milessthomas View Post
Oh I thought I had read somewhere that with the new macbook pros the heat was mostly dissipated through the rear hinge area and only the older ibooks dissipated heat through the keyboard. Thanks for the info. I don't think I'm going to use it in clamshell mode anyway I am content with the screen size of the laptop for most things. I would only use the external for adium or something so I will keep both screens up at the same time
The rear vent below the screen is indeed the main vent. But heat still has a tendency to rise, so much of it will naturally vent through the keyboard - particularly that which is not ducted out the vent (for instance, in situations where the fans aren't on). I'm not saying that running it with the lid close will have major detrimental effects, but it will make the machine work in a way that it wasn't designed to, which could result in long-term shorter service life.

I often use my MacBook Pro with an external display, and in those cases, I just turn the brightness all the way down until the backlight goes out. This preserves the CCFL tube, while keeping the second screen from being a distraction.

Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!
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I use mine with the LCD close a LOT! And after about 10 months I haven't noticed any problems. That's not to say something might happen in the future. But I am comforted by my Apple Care plan.

I guess I just use it this way on faith that since Apple made a method to work in this mode, they tested and made sure there wouldn't be any negative effects.

"Give so much time to the improvement of yourself that you have no time to criticize others"
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Quote:
Originally Posted by cwa107 View Post
...but it will make the machine work in a way that it wasn't designed to...
If the machine wasn't designed to operate with the lid closed, it wouldn't.

Case in point: Apple specifically warned against using iBook in this mode (and, normally, it won't operate this way) but provide directions for PowerBook, MacBook, and MacBook Pro users. So I'm pretty sure it was meant to be used in that way.

Incidentally, with the screen backlight off, the power demands on the DC-in board are lower, which reduces some of the heat generated by the machine.
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