For those of you with a Samsung laptop showing this problem, please see
this issue:
https://bugs.launchpad.net/ubuntu/+source/acpi/+bug/971061
in particular my last two posts.
I think a kernel patch can be made to flush the events from the embedded
controller, at resume, in the same way that I do it with my C program
that I attached to that issue for Samsung laptops (and maybe others with
the problem). TL;DR: If the events don't get flushed (queried), the GPE
of the EC is never triggered again (chicken and egg situation), my
little program queries the events and "unstucks" the EC immediatly.
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https://bugs.launchpad.net/bugs/89860
Title:
/proc/acpi/button/lid/*/state always says "open"
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