https://gist.github.com/sbueringer/bd8cec239c44d66967cf307d808f10c4
Before you install the module follow this guide and add a file in "/etc/dkms" called "rtl8821ce.conf" with the next content in it "POST_BUILD=../../../../../../root/module-signing/dkms-sign-module", then install the module and the problem with the secure boot is fixed without disabling it.
This work because you sign the module to be valid to use under secure boot.
https://gist.github.com/sbueringer/bd8cec239c44d66967cf307d808f10c4 Before you install the module follow this guide and add a file in "/etc/dkms" called "rtl8821ce.conf" with the next content in it "POST_BUILD=../../../../../../root/module-signing/dkms-sign-module", then install the module and the problem with the secure boot is fixed without disabling it. This work because you sign the module to be valid to use under secure boot.