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by liminalsunset 654 days ago
The BitLocker thing is definitely a problem. On Apple systems which have a similar FDE system, the preboot environment will shut the machine down if the page is left open for too long. The CPU/GPU (if present) are in a pre-power-management state during this time too, so the laptop will really heat up.

I wonder how limited the preboot BitLocker screen environment really is. Could there could be some flag set by the UEFI that says "I'm a laptop and the lid is closed without power connected, shut down after a timeout".
1 comments
vladvasiliu 654 days ago
In my case, my computers will end up on that screen in two cases.

The first is my desktop, without a TPM, which will ask for a BitLocker password. In this case, if I'm not fast enough, it will shut down the computer.

The second is my work laptop, which I usually expect to reboot or otherwise am around when it ends up there, in which case I'll usually type in the PIN quickly enough. However, I expect it to have a similar behavior as the first case, although I haven't tried.

But the reason I know this happens, is that I once left this PC attached to my 32" screen next to my bed, and it woke me up at night. I just went and forcibly shut off the thing.

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liminalsunset 654 days ago
So apparently this is actually configurable, but it's either on or off, and it's set to one minute by default (either 1 minute or no shutdown, no inbetween).

The command in question is ```bcdedit /set {bootmgr} bootshutdowndisabled 1```.

https://www.tenforums.com/antivirus-firewalls-system-securit...

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