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This question already has an answer here:

I am on Welcome to Ubuntu 16.04.2 LTS (GNU/Linux 4.4.0-62-generic i686) and when I do:

aptitude update
aptitude safe-upgrade

no upgrades are offered. aptitude search linux-headers-4.8 offers several 4.8 kernels:

p   linux-headers-4.8.0-28                                                        - Header files related to Linux kernel version 4.8.0
p   linux-headers-4.8.0-28-generic                                                - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-28-lowlatency                                             - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-30                                                        - Header files related to Linux kernel version 4.8.0
p   linux-headers-4.8.0-30-generic                                                - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-30-lowlatency                                             - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-32                                                        - Header files related to Linux kernel version 4.8.0
p   linux-headers-4.8.0-32-generic                                                - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-32-lowlatency                                             - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-34                                                        - Header files related to Linux kernel version 4.8.0
p   linux-headers-4.8.0-34-generic                                                - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-34-lowlatency                                             - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-36                                                        - Header files related to Linux kernel version 4.8.0
p   linux-headers-4.8.0-36-generic                                                - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP
p   linux-headers-4.8.0-36-lowlatency                                             - Linux kernel headers for version 4.8.0 on 32 bit x86 SMP

In the German Wikipedia under ubuntu is written that the kernel 4.8 is available for 16.04.2 LTS since 17 February 2017:

enter image description here

The English Wikipedia and the Ubuntu release page is still on kernel version 4.4 for 16.04.2 LTS. The later one (Ubuntu release page) omits 16.04.2 LTS also and seems to be not up-to-date.

Is it a little bit too early or should I update the kernel by hand?

marked as duplicate by Pilot6, karel, Terrance, George Udosen, Zanna Feb 21 '17 at 20:59

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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Ubuntu 16.04.2 installs a 4.8 kernel for new installations. For systems which are upgraded to 16.04.2 the current kernel series is maintained unchanged. If you have upgraded your system to 16.04.2 and want to have the new kernel and X server, then you must opt in by explicitly installing the hardware enablement stack:

sudo apt-get install --install-recommends xserver-xorg-hwe-16.04

This switches the kernel and X server to a rolling upgrade; see RollingLTSEnablementStack .

Also see Old kernel with Ubuntu 16.04.2 update, as user Pilot6 says.

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    Thanks for the answer. What is the advantage of aptitude install linux-generic-hwe-16.04 over aptitude install --install-recommends xserver-xorg-hwe-16.04? – musbach Feb 19 '17 at 17:20
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    @musbach: The first enrolls only the kernel in the HWE; the second enrolls both the kernel and the X server. If you do not have a pressing need for a new kernel and/or a new X server you should keep the current series, however. The kernel and X server series available initially in 16.04 will be supported for the entire life of 16.04. – AlexP Feb 19 '17 at 17:36
  • Thanks, I understand. I have installed the x-server on kernel 4.4. But are there two different versions of the x-server for kernel 4.8? – musbach Feb 19 '17 at 17:38
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    @musbach: They are different software products, not linked to one another. – AlexP Feb 19 '17 at 17:39
  • .. and you recomment the new software? Is the old one deinstalled? – musbach Feb 19 '17 at 17:40

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