Seems to be related to https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1025555 , which says:
/quote
CONCLUSION: - grub-efi 32bits always creates invalid entries. - Installing Ubuntu32 bits on an EFI system should be blocked by Ubiquity (the Ubuntu installer). In this case, Ubiquity should ask the user to install Ubuntu64 instead.
/unquote
Seems to be related to https:/ /bugs.launchpad .net/ubuntu/ +source/ grub2/+ bug/1025555 , which says:
/quote
CONCLUSION:
- grub-efi 32bits always creates invalid entries.
- Installing Ubuntu32 bits on an EFI system should be blocked by Ubiquity (the Ubuntu installer). In this case, Ubiquity should ask the user to install Ubuntu64 instead.
/unquote