I am working with Ubuntu 20.04 and trying to install a v. 5.4.0 HWE kernel. I can see that one is available from the “focal” release:
$ apt list -a linux-generic-hwe-20.04
Listing... Done
linux-generic-hwe-20.04/focal-updates,focal-security 5.8.0.55.62~20.04.39 amd64
linux-generic-hwe-20.04/focal 5.4.0.26.32 amd64
I am under the impression that I can specify installation from this release using the -t option. However, when I try this it still insists on installing the 5.8.0 version. This one appears to come from “focal-updates” or “focal-security”:
$ sudo apt install -s -t focal linux-generic-hwe-20.04
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
linux-headers-5.8.0-55-generic linux-headers-generic-hwe-20.04 linux-hwe-5.8-headers-5.8.0-55 linux-image-5.8.0-55-generic
linux-image-generic-hwe-20.04 linux-modules-5.8.0-55-generic linux-modules-extra-5.8.0-55-generic
...
I also tried this syntax, but that does not seem to make any useful difference:
$ sudo apt install -s linux-generic-hwe-20.04/focal
Reading package lists... Done
Building dependency tree
Reading state information... Done
Selected version '5.8.0.55.62~20.04.39' (Ubuntu:20.04/focal-updates, Ubuntu:20.04/focal-security [amd64]) for 'linux-generic-hwe-20.04'
The following additional packages will be installed:
linux-headers-5.8.0-55-generic linux-headers-generic-hwe-20.04 linux-hwe-5.8-headers-5.8.0-55 linux-image-5.8.0-55-generic
linux-image-generic-hwe-20.04 linux-modules-5.8.0-55-generic linux-modules-extra-5.8.0-55-generic
...
What am I misunderstanding about the target option and what can I do instead to successfully install the 5.4.0 version?
