How to downgrade the Ubuntu kernel?

[Juerg Haefliger]

> Hi all,
> 
> I'd like to know how to downgrade the kernel version in Ubuntu systems?
> 
> I'm having a system with Ubuntu 18.04.4 LTS(4.15.0-91-generic kernel)
> and I want to downgrade only the kernel version to 4.4.0-66-generic(it
> is part of 16.04). Is it possible? If so can someone please clarify to
> me on how to do this?

This is not something we support but you could download the deb from [1] and
install it manually using 'dpkg -i <deb>'. Or add
deb http://archive.ubuntu.com/ubuntu xenial-security main restricted
to /etc/apt/sources.list and then run
$ apt update
$ apt install linux-image-4.4.0-66-generic

...Juerg

[1]
https://packages.ubuntu.com/xenial/amd64/linux-image-4.4.0-66-generic/download
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/kernel-team/attachments/20200901/d4c45755/attachment.sig>