Thanks, marking Bionic and Xenial as won't fix. Please reopen the bug
against those releases if the SRU becomes needed.
** Changed in: ec2-hibinit-agent (Ubuntu Xenial)
Status: Incomplete => Won't Fix
** Changed in: ec2-hibinit-agent (Ubuntu Bionic)
Status: Incomplete => Won't Fix
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1898087
Title:
Please disable suspend when the package is installed
Status in ec2-hibinit-agent package in Ubuntu:
Fix Released
Status in ec2-hibinit-agent source package in Xenial:
Won't Fix
Status in ec2-hibinit-agent source package in Bionic:
Won't Fix
Status in ec2-hibinit-agent source package in Focal:
Fix Committed
Bug description:
[Impact]
Enabling CONFIG_SUSPEND in the kernel exposes a potential deadlock on
Xen instance types on AWS during hibernation, so it has been disabled
in the linux-aws kernel as an extra safety measure to prevent this
problem from happening.
[Test Case]
Try to suspend the system as a regular user:
$ /lib/systemd/systemd-sleep suspend
Sleep mode "suspend" is disabled by configuration, refusing.
On a system where this change is not present permission error appears:
$ /lib/systemd/systemd-sleep suspend
Failed to open /sys/power/state: Permission denied
[Regression Potential]
The fix is placing a configuration file drop-in to prevent the system from
suspending. On EC2 instances this is unlikely to cause unwanted side effects,
since suspended instances can't be woken up.
Outside of EC2 there is no use of the package itself, but this change disable
suspend when the package is installed.
[Original Bug Text]
From LP: #1892728
We also need to set "AllowSuspend=no" in /etc/systemd/sleep.conf (or a .d
file) as CONFIG_SUSPEND has been disabled in the kernel to improve the
robustness of hibernation.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ec2-hibinit-agent/+bug/1898087/+subscriptions
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