Downgrade kernel for ubuntu 22.04 LTS

Question

I am currently on ubuntu 22.04 LTS release which comes with kernel version 5.15.0-27-generic. I want to downgrade to kernel version 5.13 because of touchpad problem in my lenovo thinkbook.

Is it possible to downgrade the baked in kernel in 22.04 LTS release? If yes, how do I achieve it?

You read a tutorial which explains how to install a custom kernel in Linux. — paladin, Apr 26 '22 at 10:55
Yes, but will the system work because 22.04 comes with kernel version 5.15? — Harry, Apr 26 '22 at 11:17
I'd install 20.04 if my hardware is older. Will be supported until 2025 — kanehekili, Apr 26 '22 at 11:36
i downgraded to 5.13 with no problems. touchpad is working again. i used mainline. also needed to set the default kernel in grub to 5.13 .. using GRUB_DEFAULT .. because 5.15 is still installed. — ruthless, Jun 11 '22 at 12:42
I downgraded to 5.11 no problems. You can use ubuntu mainline for that. — Docent, Jun 10 '22 at 16:55
@ruthless Yes I am aware of that. Infact upgrading kernel to 5.18 from mainline is also working. — Harry, Jun 12 '22 at 10:20
I downgraded to 5.13 but to make it work I had to disable secure boot in BIOS. Without that I was getting "error: bad shim signature". — Daniel Andrzejewski, Dec 24 '22 at 08:12

score 13 · Accepted Answer · edited Jan 24 '24 at 01:00

You can try below actions to use pimlie / ubuntu-mainline-kernel.sh:

wget https://raw.githubusercontent.com/pimlie/ubuntu-mainline-kernel.sh/master/ubuntu-mainline-kernel.sh
chmod +x ubuntu-mainline-kernel.sh
search and find your wanted version
ubuntu-mainline-kernel.sh -r | grep 5.13
install that version kernel
ubuntu-mainline-kernel.sh -i v5.13.19
get all menuentries
grep 'menuentry |submenu ' /boot/grub/grub.cfg | cut -f2 -d "'"
change the grub configuration
vi /etc/default/grub
from: GRUB_DEFAULT=0
to: GRUB_DEFAULT="Advanced options for Ubuntu>Ubuntu, with Linux 5.13.19-051319-generic"
update grub
update-grub
reboot
reboot now
verify
uname -r

To make it work in my case (Lenovo Legion 5 15ITH6) I had to disable secure boot in BIOS. Without that I was getting "error: bad shim signature". — Daniel Andrzejewski, Dec 24 '22 at 08:13

score 0 · Answer 2 · answered Jan 18 '23 at 03:53

0

In my case, after clean install of lubuntu-22 on Dell-Inspiron_5570, experienced "elantech touchpad problem" due to which "two finger scrolling" was not working. After 4-5 hectic days on the work dealing with the arrow keys on keyboard, I found it as kernel incompatibility. Then, tried installing different kernel versions following @xiaojueguan answer and found the version 5.15.0-58-generic to be working for me.

answered Jan 18 '23 at 03:53

Prashant Kumar Kashyap

1

I use it in arm64 , kunpeng910 server. OK! – 杨贤文 Feb 18 '23 at 15:37
Following the instructions found at https://wiki.ubuntu.com/Kernel/LTSEnablementStack tell you how to downgrade from the HWE kernel stack to GA; see "To downgrade from HWE/OEM to GA kernel" as the 5.15 kernel is the GA kernel stack of Ubuntu (using the GA kernel stack will mean you get security fixes; using a specific kernel leaves backport security fixes to yourself to perform) – guiverc Feb 25 '24 at 07:26

Downgrade kernel for ubuntu 22.04 LTS

2 Answers2

search and find your wanted version

install that version kernel

get all menuentries

change the grub configuration

update grub

reboot

verify

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