Ubuntu Tutorials

I know many people are curious regarding which Ubuntu kernel is available, and how the kernels differ between distributions. I thought it would be interesting to create a reference outlining each of the supported and available kernels on Ubuntu, and which release they correspond to. I will try to keep this page updated with the latest information regarding Ubuntu kernel versions, including:

• Ubuntu Release (supported releases only)
• Kernel Version (including main and updates)
• Installation / Upgrade Instructions (how to install a specific kernel)

I hope this ends up becoming a useful quick reference for the community.

Ubuntu Kernel Versions

I’ve included a screenshot of the initial data. Please note that this screenshot is not kept up to date. Please download the latest PDF linked below.

Download the latest .pdf here.

Today, considering it is a holiday here in the US, I figured I’d take a day off from the tutorials and ask a question of you.

All of my servers run logwatch (which will make for a great tutorial coming up soon), and I pretty regularly see something like this in the daily output:

--------------------- Kernel Begin ------------------------

1 Time(s): TCP: Treason uncloaked! Peer XXX.XX.XX.XXX:XXXX/XX shrinks window 1898670412:1898670413. Repaired.
1 Time(s): TCP: Treason uncloaked! Peer XXX.XX.XX.XXX:XXXX/XX shrinks window 1911943385:1911943386. Repaired.
1 Time(s): TCP: Treason uncloaked! Peer XXX.XX.XX.XXX:XXXX/XX shrinks window 1922304386:1922304387. Repaired.
1 Time(s): TCP: Treason uncloaked! Peer XXX.XX.XX.XXX:XXXX/XX shrinks window 1922444120:1922444121. Repaired.
1 Time(s): TCP: Treason uncloaked! Peer XXX.XX.XX.XXX:XXXX/XX shrinks window 1949802160:1949802161. Repaired.

———————- Kernel End ————————-

I’m not really sure what that means, but if anyone can offer me some feedback I’d appreciate it.  So far I’ve seen conflicting answers from basic Googling.

To make up for not blogging over the past few weeks I’ve got a few things up my sleeve here. I definitely want to get back into my old habit so I’ll just dive right in.

This tutorial will outline a few methods of finding your installed Ubuntu version or kernel version. These can be useful if you ever need to troubleshoot a problem or need more information for a bug submission.

The first method you can use is a GUI method to see what version you have installed. Personally I think it could be made a bit more prominent, but that isn’t my call. To find the version using the GUI method simply do the following:

System > About Ubuntu

The resulting window will show some main contents and then thank you for your interest in version.

“Thank you for your interest in Ubuntu 6.10 – the Edgy Eft – released in October 2006.”

The other method to find your version is a command line method. There are two commands you can use:

cat /etc/issue

or you can use

cat /etc/lsb-release

…and finally to find your kernel version and a few more details about your machine use the uname command which, per the man pages, shows system information. Examples:

uname -a : print all information

uname -r : print the kernel release

uname -v : print the kernel version

uname -o : print the operating system

see man uname for more details on using the uname… and now you should be able to find out more about your machine, report better bugs and continue to make Ubuntu even better!