[SOLVED] kernel update necessary?

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Allewyn2
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[SOLVED] kernel update necessary?

Post by Allewyn2 »

I just updated the kernal yesterday to the one in the following pic:
5.11.png
and now the update manager is telling me to update to:
5.4.png
So what I do? 11 is higher than 4 but I believe programmers know what they are doing, for the most part.
Can someone explain this to me?
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 3 times in total.
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Grayfox
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Re: [] kernal update necessary?

Post by Grayfox »

When you update a kernel.
The older one is still installed, just not "Active"

If you go to View on the Update Manager you will find "Linux Kernels", here you can see all installed Kernels.

You will find 5.4 as well as the 5.11 one.

It is a good idea to keep the older kernel on the system for fallback reasons.

You can update the 5.4 kernel if you want.
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Re: [] kernal update necessary?

Post by Allewyn2 »

Ah ok, that explains it thank you :)
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Re: [SOLVED] kernal update necessary?

Post by rickNS »

Just to add,
I'm guessing that update has been available to you for some time ? Anyway,
Linux Kernel 5.4 is a LTS kernel (long term support) supported till 2025.
Kernel 5.11 is not LTS,
EDIT, my bad 5.11 is not end of life, even though there are many sources on web that say it is...confusing.

see, https://<blocked blogspam>/linux-kernel-5-11 ... linux-5-12
another source, https://en.wikipedia.org/wiki/Linux_ker ... on_history
Last edited by rickNS on Tue Oct 19, 2021 10:20 am, edited 2 times in total.
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Re: [] kernal update necessary?

Post by rickNS »

Allewyn2 wrote: Tue Oct 19, 2021 12:53 am Ah ok, that explains it thank you :)
Quoted you just so you'd get the message sooner.
Last edited by rickNS on Tue Oct 19, 2021 10:14 am, edited 1 time in total.
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Re: [SOLVED] kernal update necessary?

Post by rene »

Note; Ubuntu kernel series 5.11 has not reached EOL; that series will be supported until February 2022. The above "9to5linux" link speaks of upstream, kernel.org kernels and there's no or at best an almost accidental relation between "Upstream-LTS" and "Ubuntu-LTS".
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Re: [SOLVED] kernal update necessary?

Post by rickNS »

rene wrote: Tue Oct 19, 2021 9:21 am Note; Ubuntu kernel series 5.11 has not reached EOL; that series will be supported until February 2022. The above "9to5linux" link speaks of upstream, kernel.org kernels and there's no or at best an almost accidental relation between "Upstream-LTS" and "Ubuntu-LTS".
Oops, did not know all that, will edit my above post.
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Re: [SOLVED] kernal update necessary?

Post by rene »

FWIW I agree it sucks --- but Ubuntu has a very fixed 6-month release schedule, 2-year LTS schedule, which at best by accident synchronizes with any upstream kernel.org schedule. Ubuntu has the resources to itself support a kernel series and e.g. backport fixes from later upstream kernel series so they basically "do their own thing" --- and to be honest, historically kernel.org "LTS" kernels weren't a thing at all. Frankly I believe that to this day they serve mostly to confuse the issue...
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