LTSEnablementStack
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| The Ubuntu LTS enablement (also called HWE or Hardware Enablement) stacks provide newer kernel and X support for existing Ubuntu LTS releases. These enablement stacks can be installed manually but are also available when installing with Ubuntu LTS point release media. These newer enablement stacks are meant for desktop and server and even recommended for cloud or virtual images. However, if one wants to remain on the original GA stacks, the options are: * Install from a previous 12.04.0/12.04.1/14.04.0/14.04.1 point release and update. Previous releases are archived at http://old-releases.ubuntu.com/ * Perform an update or upgrade to an LTS release from a previous release. * Perform a network install using the netboot images rather than the new <'''release'''>-netboot images. === Ubuntu 16.04 LTS - Xenial Xerus === The 16.04.2 and newer point releases will ship with an updated kernel and X stack by default for the desktop. Server installations will default to the GA kernel and provide the enablement kernel as optional. The 16.04 HWE Stacks will follow a new Rolling Update Model as documented at the following location: [[ https://wiki.ubuntu.com/Kernel/RollingLTSEnablementStack | https://wiki.ubuntu.com/Kernel/RollingLTSEnablementStack ]] It is highly recommended to read the above documentation before executing the following commands, as the HWE model has changed in 16.04. Installing the HWE stack is simple: ==== Desktop ==== {{{ sudo apt-get install --install-recommends linux-image-generic-hwe-16.04 xserver-xorg-hwe-16.04 }}} ==== Server ==== {{{ sudo apt-get install --install-recommends linux-image-generic-hwe-16.04 }}} === Ubuntu 14.04 LTS - Trusty Tahr === The 14.04.2 and newer point releases will ship with an updated kernel and X stack by default. If you have installed with older media you can use the following to install the newer HWE kernel derived from 16.04 (Xenial): ==== Desktop ==== {{{ sudo apt-get install --install-recommends linux-generic-lts-xenial xserver-xorg-core-lts-xenial xserver-xorg-lts-xenial xserver-xorg-video-all-lts-xenial xserver-xorg-input-all-lts-xenial libwayland-egl1-mesa-lts-xenial }}} ==== Multiarch Desktop ==== If you run a multiarch desktop (for example, i386 and amd64 on amd64, for gaming or Wine), you may find you need a slightly more involved command, like this: {{{ sudo apt-get install --install-recommends linux-generic-lts-xenial xserver-xorg-core-lts-xenial xserver-xorg-lts-xenial xserver-xorg-video-all-lts-xenial xserver-xorg-input-all-lts-xenial libwayland-egl1-mesa-lts-xenial libgl1-mesa-glx-lts-xenial libgl1-mesa-glx-lts-xenial:i386 libglapi-mesa-lts-xenial:i386 }}} ==== Server ==== Install the HWE kernel derived from 16.04 (xenial): {{{ sudo apt-get install --install-recommends linux-generic-lts-xenial }}} === Ubuntu 12.04 LTS - Precise Pangolin === The 12.04.2 and newer point releases will ship with an updated kernel and X stack by default. The current and supported hardware enablement stack is comprised of the newer kernel and X stacks from 14.04 (Trusty). Anyone wishing to opt into the hardware enablement stack for Precise may do so running the following commands: ==== Desktop ==== {{{ sudo apt-get install --install-recommends linux-generic-lts-trusty xserver-xorg-lts-trusty libgl1-mesa-glx-lts-trusty}}} ==== Server ==== {{{ sudo apt-get install --install-recommends linux-generic-lts-trusty }}} === Check your support status === If you want a tool to determine if your install is still supported please use hwe-supoprt-status as documented on [[1204_HWE_EOL|https://wiki.ubuntu.com/1204_HWE_EOL]] {{{ hwe-support-status --verbose }}} Below contains additional specifics regarding the exact policies and procedures regarding the support, maintenance, and upgrade paths for these hardware enablement stacks. ##== 12.04.5 + 14.04 Hardware Enablement Stack Policies and Procedures == ## ## 1. For the 12.04.5 CDs, we will default to the new Trusty HWE stack. Due to size limitations we are unable to ##provide options for both the Trusty HWE stack and the original Precise stack. ## 1. For the 12.04.5 DVDs, we will default to the new Trusty HWE stack as well. ## 1. The 12.04.0 and 12.04.1 point releases will be archived and available at [[http://old-##releases.ubuntu.com/||http://old-releases.ubuntu.com/]]. ## 1. For the 12.04.5 CDs and DVDs, we will document that anyone installing and wishing to remain on the original ##12.04 stack to please install from the 12.04.0 or 12.04.1 media and update. ## 1. We only intend to support HWE stack package combinations in 12.04 which are derived from the same release, ##eg. the 14.04 X.org must be used in conjunction with the 14.04 kernel and vice versa. Intermixing a 14.04 ##enablement kernel with the 12.04 X.org stack or a 14.04 enablement X.org stack with a 12.04 kernel will not be ##officially tested nor supported. ## 1. Anyone running an original Precise stack will '''NOT''' be automatically updated to the new Trusty HWE ##stack. Users can electively choose to install the Trusty enablement stack meta package if they wish to do so. ## 1. Additionally, anyone upgrading to Precise will not be automatically upgraded to the new Trusty HWE stack. ##Again, they can electively choose to do so by manually installing the appropriate meta package. ## 1. The original 12.04 stack in Precise will remain supported for the usual 5yr life cycle of the LTS release. ## 1. The 14.04 HWE stack will remain supported in 12.04 for the life of the 12.04 LTS release. ## 1. The 14.04 HWE stack will be the last and final HWE stack offered in Precise. ## 1. Anyone running with the newer Trusty HWE stack will remain on that stack. Users will '''NOT''' be ##automatically rolled forward to newer releases. ## 1. Anyone running a Raring, Saucy, or Trusty HWE stack in 12.04 might have an unexpected result if they ##upgrade their entire system to the 12.10 Quantal Quetzal release. The packages offered in the ##Raring/Saucy/Trusty HWE stack would supersede the 12.10 packages. The decision was for update-manager to only ##prompt to upgrade to the next LTS release, which is how it is already. Otherwise, there should be some type of ##package conflicts/replace in place to prevent this from happening. This is only a real concern for the 13.04, ##13.10, and 14.04 stacks. ## 1. Apport has and will be updated to allow bug reporting in Precise against the HWE stacks. These bugs will ##also be appropriately tagged to assist in searching. ## 1. Only the -generic x86 kernel flavor from 14.04 will be supported in the Trusty HWE stack in Precise. <<Include(Kernel/Support, , from="^## start", to="## end")>> ##{{http://media.cdn.ubuntu-de.org/wiki/attachments/09/06/LTSEnablementStackSupport12.04.4.png}} |
For more information, please refer to [[https://wiki.ubuntu.com/Kernel/LTSEnablementStack|https://ubuntu.com/about/release-cycle]] |
Contents |
LTS Enablement Stacks
For more information, please refer to https://ubuntu.com/about/release-cycle
Kernel/LTSEnablementStack (last edited 2023-05-17 17:58:01 by anthonywong)