Help with Downgrading Linux Kernels

[shabinder]

Hey there, as usual I am facing some issues with nvidia and the latest kernel, So I intend to downgrade to prev kernel but I am unable too

when I install prev kernel, I see an unsigned image installed and available in grub which stucks at logo.

here it is:

shabinder@default-admin:~$ dpkg -l | grep linux-image
rc linux-image-5.11.0-27-generic 5.11.0-27.29~20.04.1 amd64 Signed kernel image generic
rc linux-image-5.11.0-36-generic 5.11.0-36.40~20.04.1 amd64 Signed kernel image generic
rc linux-image-5.11.0-37-generic 5.11.0-37.41~20.04.2 amd64 Signed kernel image generic
ii linux-image-unsigned-5.11.0-36-generic 5.11.0-36.40~20.04.1 amd64 Linux kernel image for version 5.11.0 on 64 bit x86 SMP
ii linux-image-unsigned-5.11.0-37-generic 5.11.0-37.41~20.04.2 amd64 Linux kernel image for version 5.11.0 on 64 bit x86 SMP

as you can see my 5.11.0-36 is marked as rc, but it works fine as opposite to 5.11.0-37 where suspend doesn't work

I want to remove 5.11.0-37 completely and keep 5.11.0-36 as default and 5.11.0-27 as an additional for emergency cases

Can anybody help me out here ?

[StarTreker]

If you have Synaptic Package Manager installed, you can use it to remove the kernels you are not using.

Once your in Synaptic, type in search box Linux-Headers. You will find huge list, just gotta make sure you mark the right one for removal, and then hit apply.

[andreak9173]

This link on how to downgrade the kernel will help. Since Zorin OS is based on Ubuntu you can follow these steps even though they are for Ubuntu.

How to Upgrade/Downgrade Kernel in Ubuntu

[shabinder]

Thanks