I'm unable to do a fresh tumbleweed install with SecureBoot enabled. After
selecting usb device in boot menu i get a black screen not responding anymore.
Pushing Esc after some time leads to an error message with system freeze:

Failed to load image: Security Policy Violation

When i disable SecureBoot i can boot fine.To exclude possible mistakes:

- USB installer created with SUSE ImageWriter
- Checksums are all fine
- selected right entry in boot menu to boot usb-stick in UEFI mode

Other distro's (Ubuntu, Debian, Fedora) officially supporting SecureBoot are
working fine out of the box with SecureBoot enabled. With Leap i get the same
behavior as described above.

Is there something wrong with the signatures?

regards