Comment 10 for bug 1864045

@rbalint unfortunately bisecting the kernel is not a trivial task... there are many changes between the stock 4.15 and the 5.0 kernels and the process is probably going to take a long time. I'll check if it's possible to identify only a subset of potential commits that might have caused this problem.

The steps that I've used to verify that the problem was fixed (or at least it thought it was fixed) were pretty easy: I got acpid from https://salsa.debian.org/debian/acpid.git (version 2.0.32-1), recompiled it, moved it to /usr/sbin/acpid (replacing the stock 2.0.28) and then tested multiple hibernate/resume cycles via the AWS APIs.

With this "custom" acpid I wasn't able to trigger any failure. It's also worth mentioning that I was using 5.0.0-1019-aws. I'll repeat my tests again with the latest bionic aws 5.0 kernel and will check if I can reproduce the failures.