Problem loading X.509 certificate -74

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  • Joined: Sun Feb 14, 2021 5:47 pm
  • Real Name: Matthias Ebert

Problem loading X.509 certificate -74

PostSun Feb 14, 2021 6:23 pm

In OpenSUSE Leap 15.2 I do not get the DeckLink Mini Recorder 4K up and running if secure boot is enabled.

During startup the following message appears as soon as the Blackmagic key is enrolled:
Code: Select all
kernel: integrity: Problem loading X.509 certificate -74

Here are some other details:
Code: Select all
> sudo lspci | grep Blackmagic
04:00.0 Multimedia video controller: Blackmagic Design DeckLink Mini Recorder 4K

Code: Select all
> sudo dkms status -m blackmagic -k `uname -r`
blackmagic, 11.6a26: added
blackmagic, 12.0a14, 5.3.18-lp152.63-default, x86_64: installed

> sudo dkms status -m blackmagic-io -k `uname -r`
blackmagic-io, 11.6a26: added
blackmagic-io, 12.0a14, 5.3.18-lp152.63-default, x86_64: installed

Code: Select all
> sudo mokutil --test-key /var/lib/blackmagic/MOK.der
/var/lib/blackmagic/MOK.der is already enrolled

Loading the modules fails:
Code: Select all
>  sudo modprobe blackmagic
modprobe: ERROR: could not insert 'blackmagic': Operation not permitted

> sudo modprobe blackmagic-io
modprobe: ERROR: could not insert 'blackmagic_io': Operation not permitted

The card works fine without secure boot (which is not an option for me).

What could be wrong with the X.509 certificate?

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