apport information ** Tags added: apport-collected bionic ec2-images
** Description changed: When testing hibernation / resume on AWS with 5.0 or 5.3 kernels on bionic (using acpid 1:2.0.28-1ubuntu1), we sometimes see failure with repeated attempts. The first attempt will always be triggered, but the next attempt may not. The result is the agent never triggers the hibernation process and the instance will be forced to shutdown after a timeout period. Two workarounds have been identified. The first is to restart acpid during the resume handler. The second is to use the latest upstream acpid (as of Feb 1, 2020). This second workaround indicates there may be a patch missing in the acpid in bionic (1:2.0.28-1ubuntu1) to work with the 5.0+ kernels. To reproduce this problem: 1) Launch an c4, c5, m4, m5, r4, r5 instance type with a 5.0 or 5.3 kernel on a bionic image with on-demand hibernation support enabled. 2) Hibernate and resume the instance, ensuring the system is fully resumed afterward and the swap file has been removed. 3) Hibernate and resume another time. The hibernate should be triggered immediately and the instance should become unresponsive as it saves state to disk. 4) Resume the instance, it should come back with the same processes running. 5) Repeat 3) - 4) as necessary. + --- + ProblemType: Bug + ApportVersion: 2.20.9-0ubuntu7.9 + Architecture: amd64 + DistroRelease: Ubuntu 18.04 + Ec2AMI: ami-0edf3b95e26a682df + Ec2AMIManifest: (unknown) + Ec2AvailabilityZone: us-west-2a + Ec2InstanceType: m4.large + Ec2Kernel: unavailable + Ec2Ramdisk: unavailable + Package: acpid 1:2.0.28-1ubuntu1 + PackageArchitecture: amd64 + ProcEnviron: + TERM=screen + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=C.UTF-8 + SHELL=/bin/bash + ProcVersionSignature: User Name 5.0.0-1025.28-aws 5.0.21 + Tags: bionic ec2-images + Uname: Linux 5.0.0-1025-aws x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm audio cdrom dialout dip floppy lxd netdev plugdev sudo video + _MarkForUpload: True ** Attachment added: "Dependencies.txt" https://bugs.launchpad.net/bugs/1864045/+attachment/5329811/+files/Dependencies.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1864045 Title: Hibernation events sometimes missed on repeated attempts To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/1864045/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
