I have Ubuntu 16.04.4 LTS and the Linux kernel version is 4.13.0-39. But in The Linux Kernel Archives I can't find version 4.13.

Edit 1: How do they choose what Linux kernel version to put in the next point release of LTS version with LTS Enablement Stack?

Edit 2: What are the criterias to pick a Linux kernel version and put in a Ubuntu version?

LTS enablement stack bring new Linux kernel version along with a point release, but wouldn't that bring the "bugs" from the recently released version?


By default, Ubuntu systems run with the Ubuntu kernels provided by the Ubuntu repositories. However it is handy to be able to test with unmodified upstream kernels to help locate problems in the Ubuntu kernel patches, or to confirm that upstream has fixed a specific issue. To this end we now offer select upstream kernel builds. These kernels are made from unmodified kernel source but using the Ubuntu kernel configuration files. These are then packaged as Ubuntu .deb files for simple installation.

These kernels are not supported and are not appropriate for production use.

See https://wiki.ubuntu.com/Kernel/MainlineBuilds and http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D for more details.

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