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

Samir Kamerkar
22 April 2026

From Jammy to Resolute: how Ubuntu’s toolchains have evolved

Ubuntu Article

We cover new toolchain versions, devpacks and workflows that improve the developer experience. The evolution of Ubuntu’s toolchains story goes beyond just providing up-to-date GCC, LLVM, and Python. It is also about opinionated openJDK variants, task-focused devpacks, FIPS compliant toolchains, and snaps, like the new .NET snap and Snapcr ...

Rob Gibbon
20 April 2026

Hybrid search and reranking: a deeper look at RAG

AI Article

Many of us are familiar with the retrieval augmented generative AI (RAG) pattern for building agentic AI applications – like digital concierges, frontline support chatbots and agents that can help with basic self-service troubleshooting.  At a high level, the flow for RAG is fairly clear – the user’s prompt is augmented with some relevant ...

Canonical
20 April 2026

Canonical expands Ubuntu support to next-generation MediaTek Genio 520 and 720 platforms

edge computing Article

Canonical is pleased to announce the early access launch of Ubuntu 24.04 LTS for MediaTek’s Genio IoT platforms. Building on the companies’ strategic partnership, this release introduces optimized Ubuntu images for the brand-new Genio 520 and 720, while continuing to provide robust support for the Genio 350, 510, 700, and 1200.  The colla ...