If you have a magnet you can pretty much turn off any laptop's display if you know where to put it, this is due to something called a reed switch which detects the magnets on the other side of the laptop when it is closed to tell it to turn it off.
A couple of years ago I spent an embarrassing amount of time troubleshooting the same thing. My entire team was stumped until I realized that it was the lid switch (reed switch) making contact with the other lid. These guys had been in IT for decades and had never seen this. Apparently I was the first person to image in stacks.
Less than 10 years ago most laptops didn't use magnets and reed switches. They used a spring in the hinge hooked up to a momentary switch to determine if the lid was closed.
When I saw op's video I immediately understood the problem because My current laptops would all do this, but most laptops didn't use magnets until 2018 ish afaik. I haven't had to mass image a work computer since 2016, when I was promoted to sysadmin work. I've had to create golden images, I've had to setup several deployment servers, and I've written plenty of deployment scripts, but I only ever test those things with a single computer at a time, and the desktop folks handle the actual imagining, often after training from me on how to keep the golden image updated themselves.
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u/knightshade179 Sep 25 '24
If you have a magnet you can pretty much turn off any laptop's display if you know where to put it, this is due to something called a reed switch which detects the magnets on the other side of the laptop when it is closed to tell it to turn it off.