Comment 10 for bug 1939565

Test again with my UEFI develop kit(RainbowPass) platform by following procedures and still cannot reproduce this issue.

1. install focal
2. update shim-signed to 1.40.6+15.4.0ubuntu7 and grub2 to 2.04-1ubuntu26.12
3. install mainline kernel(unsigned), https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.8.18/
4. signed kernel module and enrolled key to MOK( install a DKMS and followed the official procedures)
5. run the script and EFI application to signed key and enroll key to MOK(need to disable secureboot first), https://github.com/Ivanhu5866/MokEnrollKey/blob/master/mok_testkernel_key.sh
this basically is the same procedure as OEM image installation.
6. reboot

@YC
per talk, please enable the shim log for me to check first by
$sudo mokutil --set-verbosity true