Skip to main content
  1. Blog
  2. Article

Canonical
on 30 July 2019

Canonical Design Blog: Amazon EC2 On-Demand Hibernation for Ubuntu 18.04 LTS now available

AWS and Canonical today announce the public release of Amazon EC2 Hibernation support for Ubuntu 18.04 LTS, as part of the efforts to continuously optimise Ubuntu on AWS. Amazon EC2 Hibernation gives you the ability to launch Amazon EC2 instances, set them up as desired, hibernate them, and then quickly bring them back to life when you need them. Applications pick up exactly where they left off instead of rebuilding their memory footprint. Using hibernate, you can maintain a fleet of pre-warmed instances that can get to a productive state faster, and you can do this without modifying your existing applications. The necessary software updates are available in Ubuntu 18.04 LTS AWS Machine Images (AMIs) with a serial of 20190722.1 or later. Support for other Ubuntu releases is in progress. Once you've learned about Amazon EC2 hibernation, you can enable hibernation for your Amazon EC2 instances using the Amazon EC2 Hibernation user guide. Limitations: There is a known issue when using Amazon EC2 Hibernation related to KASLR (Kernel Address Space Layout Randomisation). KASLR is a standard Linux kernel security feature which helps to mitigate exposure to and ramifications of yet-undiscovered memory access vulnerabilities by randomising the base address value of the kernel. In a small percentage of tests, instances with KASLR enabled do not resume and become completely unusable after hibernation. Disabling KASLR, which is enabled by default, is known to avoid this issue. Please see bug lp:1837469 for additional details.

Related posts

Abdelrahman Hosny
21 May 2026

Developing web apps with local LLM inference

AI Article

I’ve yet to meet a developer that enjoys working with metered AI APIs. The need to pay for every API call in development works in direct opposition to the ethos of rapid iteration, and it’s easy for the costs to get out of hand. That’s why Canonical has created a different approach to building AI-powered ...

Luci Stanescu
21 May 2026

PinTheft Linux kernel vulnerability mitigation

Ubuntu Article

A local privilege escalation (LPE) security vulnerability in the Linux kernel, codename “PinTheft,” was publicly disclosed on May 19, 2026. The vulnerability was fixed in the mainline Linux kernel tree. A proof-of-concept exploit was published along with public disclosure. The vulnerability does not have a CVE ID assigned at the moment; o ...

Massimiliano Gori
21 May 2026

Canonical announces fully Managed Kubeflow AI operations platform on the Microsoft Azure Marketplace

AI Machine Learning

Canonical has announced the general availability of Managed Kubeflow on the Microsoft Azure Marketplace. This fully managed MLOps platform allows enterprise AI teams to deploy a production-ready environment in under an hour, eliminating infrastructure maintenance. ...