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>the attacker will simply wait until the laptop is unlocked.

A potential counter measure is for the machine to periodically encrypt itself again and prevent use until a password/key is supplied ("clamming up"). This would prevent an attacker who snatched a logged-into computer from having unbounded carte blanche access to the machine. I'm envisioning something that every 10 minutes locks itself.

Does anyone know of such a solution?

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A screen saver (w/ require password & possible full hibernation with memory flush)?

That's defeated by a USB mouse jiggler [1], which is apparently commonly used by the type of people who seize computers in the wild.

[1] https://www.amazon.com/CRU-Inc-30200-0100-0011-WiebeTech-Jig...

Yes, my idea was a intension counter measure to 'mouse' jigglers.

I think they are talking about a system that unconditionally asks for the password every 10 minutes even while the computer is in active use.

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