error: /boot/vmlinuz-4.18.16-1-default has invalid signature

[Manuel Quintero Fonseca <manuel@xxxxxxxxxx>]

I Compiled the stable kernel obtained from kernel.org, when starting the grub
the error came out:

Loadin Linux 4.18.16-1-default ..
error: /boot/vmlinuz-4.18.16-1-default has invalid signature.
loading initial ramdisk ...
error: the kernel must be loaded first


The steps for the process were:

$ git clone git: //git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
cd linux-stable

$ git checkout -b stable v4.18.16

$ cp / boot / config-`uname -r` * .config

$ make
#make modules_install install

#reboot

with that it is supposed to be compiled and installed in the system and I configure the grub

the source: https://kernelnewbies.org/KernelBuild

openSUSE TW

NOTE: I tested it on a virtual machine in the same way, and did not frame the error

regards

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