Comment 7 for bug 1864045

I have tried the 'fixed' acpid version and also tried various versions with 5.0 and 5.3 kernels, but the issue does not seem to be fixed.

I've backported acpid 1:2.0.32-1ubuntu1 in ppa:rbalint/scratch2 which is practically the same as 2.0.32-1 compiled on Ubuntu, but the second hibernation attempt still fails.

Package versions used:
linux-aws-wip/5.3.0.1012.13
acpid/1:2.0.32-1ubuntu1~18.04.0~rbalint3 from ppa:rbalint/scratch2
ec2-hibinit-agent/1.0.0-0ubuntu8~18.04.0~rbalint3 from ppa:rbalint/scratch2

Instance type: c4.large

Vanilla Bionic, i.e. kernel 4.15.0-1060-aws and Bionic's acpid hibernates twice without any issue.

Could you please add detailed reproduction steps that show how the new acpid was used to fix the issue?

For now it looks like a kernel regression and bisecting the Linux commit changing the behaviour would be highly useful.