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I'm running 14.04 and installed the 4.02 kernel several months ago because it supported my hardware better (ThinkPad T450s) than the 3.13 kernel.

When I run software update, however, it does not update the 4.x kernel at all -- just the 3.13 one.

I also see that 4.0.x is marked EOL at kernel.org and that 4.1.3 is now listed as the current stable kernel.

Questions:

  • Do I need to install the newest kernel manually as I did with 4.0 in the first place?
  • And what would happen if I just removed 3.13 from my system? Would that cause the Software Updater to look for 4.x updates?

Thanks!

Dan Gillmor
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2 Answers2

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Kernels that are not supported by Ubuntu will never be updated.

You can install the latest stable supported Ubuntu kernel 3.19 by running

sudo apt-get install linux-generic-lts-vivid

It will get updates.

If you just remove 3.13, you will get no kernel updates at all.

Pilot6
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I assume, you have installed the kernel manually without a PPA or from the Ubuntu repositories. Therefore you will never get an update and also not, if you remove you 3.x kernel.

To install a supported kernel, follow @Pilot6 answer or search a PPA for a kernel with version 4+.

Or install a kernel via deb packes from here, but you have to repeat this procedure for each new kernel version.

Eg (replace the filenames with you preferred kernel version):

  1. Download the packages

    For 64 bit systems

    wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/linux-headers-4.0.0-040000_4.0.0-040000.201504121935_all.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/linux-headers-4.0.0-040000-generic_4.0.0-040000.201504121935_amd64.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/linux-image-4.0.0-040000-generic_4.0.0-040000.201504121935_amd64.deb

    For 32 bit systems

    wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/linux-headers-4.0.0-040000_4.0.0-040000.201504121935_all.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/linux-headers-4.0.0-040000-generic_4.0.0-040000.201504121935_i386.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/linux-image-4.0.0-040000-generic_4.0.0-040000.201504121935_i386.deb

  2. Install the packages

    sudo dpkg -i linux-headers-4.0.0-*.deb linux-image-4.0.0-*.deb

  3. Update grub

    sudo update-grub

  4. Reboot your system

A.B.
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