Comment # 40 on bug 1208003 from Neil Rickert

Replying to c#39

Full installation with mixed mode EFI does now work for Tumbleweed.  Or, more
accurately, it worked when I tested it a while ago (I think November).

For it to work, you do need to enable the online repos.  Support for 32-bit EFI
is not on the DVD, so the installer needs to download that from the repos.  It
now sets everything up correctly so that grub updates work properly.

You might need to uncheck the box for secure-boot support in boot settings.  I
don't know whether it automatically does that.  However, there isn't any
secure-boot support for 32-bit EFI.