After update from openSUSE Leap 15.0 into openSUSE Leap 15.1 in VirtualBox, I also had unbootable system and I get GRUB error: “symbol ‘grub_efi_allocate_fixed’ not found”. Opened new bug https://bugzilla.opensuse.org/show_bug.cgi?id=1153828 as the old one was quite long and closed without fix
As this is:
- an old thread where not many people will look into anymore;
- this thread is about Tumbleweed and NOT about Leap 15.1;
- you probably want maximum exposure to those who may be able to help you;
I suggest you start a new thread with a good title that will draw the attention of the people that browse through the list of new threads.