Comment 15 for bug 1980831

I tried to install the mainline kernel and to sign it according to https://www.digitalpeer.com/blog/install-custom-or-mainline-kernel-on-ubuntu, https://ubuntu.com/blog/how-to-sign-things-for-secure-boot, https://github.com/berglh/ubuntu-sb-kernel-signing.

It seemed to work, but when I boot it says the shim signature is not recognized, or something of the sort.

I'll try some more, but perhaps someone can point me to relevant and up-to-date documentation? Thank you.