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I thought that the usual update in Ubuntu does install new kernel versions. I noticed that

$uname -r
3.13.0-24-generic

and

$dpkg -l | grep linux-image
ii  linux-image-3.13.0-24-generic   3.13.0-24.47   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-27-generic   3.13.0-27.50   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-29-generic   3.13.0-29.53   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-30-generic   3.13.0-30.55   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-34-generic   3.13.0-34.60   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-35-generic   3.13.0-35.62   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-36-generic   3.13.0-36.63   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-37-generic   3.13.0-37.64   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-39-generic   3.13.0-39.66   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-40-generic   3.13.0-40.69   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-43-generic   3.13.0-43.72   amd64    Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-44-generic   3.13.0-44.73   amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-46-generic   3.13.0-46.79   amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-48-generic   3.13.0-48.80   amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-49-generic   3.13.0-49.83   amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-3.13.0-51-generic   3.13.0-51.84   amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-24-generic 3.13.0-24.47     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-27-generic 3.13.0-27.50     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-29-generic 3.13.0-29.53     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-30-generic 3.13.0-30.55     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-34-generic 3.13.0-34.60     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-35-generic 3.13.0-35.62     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-36-generic 3.13.0-36.63     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-37-generic 3.13.0-37.64     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-39-generic 3.13.0-39.66     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-40-generic 3.13.0-40.69     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-43-generic 3.13.0-43.72     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-44-generic 3.13.0-44.73     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-46-generic 3.13.0-46.79     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-48-generic 3.13.0-48.80     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-49-generic 3.13.0-49.83     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-extra-3.13.0-51-generic 3.13.0-51.84     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
ii  linux-image-generic                 3.13.0.51.58     amd64        Generic Linux kernel image

Any idea why the kernel was not updated?

thanks

edit : I checked the grub configuration and found the following: 

insmod gzio insmod part_msdos insmod ext2
set root='hd1,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1  79b97cb3-a4cc-48a6-afae-f0b5f052eec
else
  search --no-floppy --fs-uuid --set=root 79b97cb3-a4cc-48a6-afae-f0b5f052eec4
fi
linux   /vmlinuz-3.13.0-24-generic root=UUID=d58b8f4c-a995-433b-a117-7dc0e0335ee5 ro  quiet splash $vt_handoff
initrd  /initrd.img-3.13.0-24-generic
111
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  • What makes you think it is not updated? You have plenty of kernels, including the latest one. – Pilot6 May 26 '15 at 15:44
  • possible duplicate of [kernel version 3.13 even I have ubuntu 14.04.2](http://askubuntu.com/questions/622753/kernel-version-3-13-even-i-have-ubuntu-14-04-2) – Pilot6 May 26 '15 at 15:45
  • read [this thread](http://askubuntu.com/questions/618575/how-do-i-find-the-current-stable-kernel-hwe-for-14-04-2) I hope you'll understand it. – JoKeR May 26 '15 at 16:04
  • @Pilot6 I have ubunutu 14.02 ( I did not upgrade to a newer version. The second comment concerns upgrade to a newer version). There are newer versions than the 3.13.0.24. But when I update the system I do not pass to the newer kernel. – 111 May 26 '15 at 16:05
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    Ooops. See `uname -r`? OP probably booted with a previous kernel using grub, or I have no ideas. It is not a duplicate. – Pilot6 May 26 '15 at 16:05
  • @111 you can also clean old unneeded kernels [check here](http://askubuntu.com/questions/2793/how-do-i-remove-or-hide-old-kernel-versions-to-clean-up-the-boot-menu) – JoKeR May 26 '15 at 16:19
  • But I have the oldest version. – 111 May 26 '15 at 16:22
  • @Pilot6. Maybe you are right about the grub. I edit the original post. – 111 May 26 '15 at 16:38
  • Run `sudo update-grub` – Pilot6 May 26 '15 at 16:39
  • Is it safe? My system is dual boot. Do I have to do this, periodically? – 111 May 26 '15 at 16:40
  • Yes, it must be safe. – Pilot6 May 26 '15 at 16:44
  • But it runs on every new kernel image install. The question is why it did not in your case. – Pilot6 May 26 '15 at 16:46
  • I run sudo update-grub, reboot, but again from uname -r got 3.13.0-24-generic – 111 May 26 '15 at 16:58
  • I changed manually 0.24 to 0.51 (in grub) and now I have uname -r, 3.13.0-51-generic (the latest kernel) – 111 May 26 '15 at 17:55

1 Answers1

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Linux 3.16 is the latest version of Linux available in Ubuntu 14.04, and Canonical provide long term support for it, rather than giving users the very latest available version. You probably need to update your system to receive it:

sudo apt-get update
sudo apt-get dist-upgrade

dist-upgrade differs from upgrade in that it updates packages that might otherwise be 'held back', which sometimes includes the kernel. Currently, you are using the latest 3.13 kernel, which will still get security updates, but you'll have to dist-upgrade to get 3.16.

On Ubuntu 15.04, however, the latest version available on Ubuntu is 3.19. If you're using Ubuntu 15.04, again, update using the above method.

If you want to use the very latest mainline kernels, you can download them from here - scroll to the bottom to find the latest version. However, you should not do this on a production computer, because these can be more buggy and could break your system.

You will also have to manually update these every time, because there's no automatic update method. (This used to be a PPA, but now you have to manually download each version).

David Bailey
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