Issue with booting kernel over 5.15.0-47 ubuntu 22.04

Question

So I have an issue with kernel update. I am running kernel 5.15.0-47-generic and tried to update it to 5.15.0-48-generic and even to 5.19.5-051905-generic. I used Ubuntu Mainline Kernel Installer for it. It seems to be installed on my system, but when I want to chose either of them to boot i get this:

error: bad shim signature.
error: you need to load kernel first.
press any key to continue...

I can only load 5.15.0-47-generic and nothing else.
(I didn't find anything similar in other threads so that's why I am asking. Thanks)

You will need to disable secure-boot in BIOS to use mainline and non-standard kernels. — Doug Smythies, Sep 03 '22 at 14:40
@doug-smythies thanks for your answer. After I disable it is there going to be a problem with security? I mean - can I run on this setting for good? — studzin-sky, Sep 03 '22 at 15:00

score 1 · Answer 1 · answered Sep 08 '22 at 14:39

1

You need to disable secure boot from BIOS

answered Sep 08 '22 at 14:39

chunkychunk

21

Issue with booting kernel over 5.15.0-47 ubuntu 22.04

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