Mmmh, a search through sources.debian.net indicates that this path is mentioned in the source code of packages dkms and virtualbox.
https://codesearch.debian.net/search?q=%2Fvar%2Flib%2Fshim- signed%2Fmok%2FMOK.der I guess that DKMS creates the certificate, and VirtualBox seems able to use it. I will see if I can do the same with acpi-call, but it's too late for Focal. Maybe the package could be backported once it will be synchronized from Debian Sid. In the meantime I'll let the bug report open. Thanks for your help ! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872213 Title: MOK not asked upon installation of acpi-call-dkms To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acpi-call/+bug/1872213/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs