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display on/off-sensor placement / clamshell mode

Hi .. I want my MacBookpro to run in permanent clamshell mode without needing to close the display. I thought I could just trick the open/close sensor system or so

any idea? where is that bugger, in the hinge?

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Located on the back of the right side of the keyboard, about in the middle.

It is commonly called a reed switch. By sliding a paperclip along the bezel bottom you can locate the magnet in the bezel. Placing a magnet on the top case in the correct position will "sleep" the display.

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Good Luck,

N.

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Genius. Trying to figure this out for years. Even the IT guys I was working for didn't know.

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I have a MBP with a busted screen (backlight working). It's hooked up to a studio diplay that is configured as main monitor in system preferences. The MBP display doesn't do a thing now, neither open or closed. No need to trick any sensors.

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but is it still in the system prefs? i hate saerching for windows that are located on a second screen thats switched off

Once the external display is configured as main all windows are displayed on it.

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ok .. it seems to be in the screen on the right side of the camera and the little hook thingy that keeps the cover down. attaching a magnet there sends my MacBookpro to sleep

thanks machead3

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Had this happen on an A1278; couldn’t figure out why. Magnetized USB connectors were the problem. Demagnetize them with something like this: https://amzn.to/2CEM4pJ

There are 4 strong N or S domains on the upper display border by the camera, starting about 2” from the outer edge of the display clamshell and ending about 3-4” inches in, on both right and left sides. This makes me think there’s either 1 or 2 clamshell sensors (hall or reed type) in the palm rest on either side of the trackpad.

pmset -g log:

Display is turned off

Entering Sleep state due to 'Clamshell Sleep' …

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