Comment # 10 on bug 1194184 from Ulrich Windl

(In reply to Takashi Iwai from comment #9)
> But you can retry and check again: uninstall openSUSE-signkey-cert package
> once.  Then install it again, check whether the error persists.  Then reboot
> and check whether you can enroll it.

# rpm -ve openSUSE-signkey-cert
Preparing packages...
openSUSE-signkey-cert-20210302-lp153.1.1.x86_64
EFI variables are not supported on this system
Failed to delete /etc/uefi/certs/BDD31A9E-kmp.crt.del
# zypper install openSUSE-signkey-cert
[...]
���berpr���fung auf Dateikonflikte l���uft: .....[fertig]
(1/1) Installieren: openSUSE-signkey-cert-20210302-lp153.1.1.x86_64
.....[fertig]
Zus���tzliche rpm-Ausgabe:
EFI variables are not supported on this system
Failed to import /etc/uefi/certs/BDD31A9E-kmp.crt
# ll /etc/uefi/certs/
insgesamt 12
-rw-r--r-- 1 root root 1288 24. Nov 07:14 4AAA0B54.crt
-rw-r--r-- 1 root root 1257 16. Jul 10:59 BCA4E38E-shim.crt
-rw-r--r-- 1 root root 1177  3. Mai 2021  BDD31A9E-kmp.crt