Ok, I just checked with other distributions and it seems that the efibootmgr bug is upstream.
If there is a way to prevent efibootmgr execution, please tell me. For exemple ubiquity should be patched in some way.
By the way, it should be reported in the release notes that, in order to boot ubuntu from EFI, you need to either install rEFIt or executing these commands from in osx:
Ok, I just checked with other distributions and it seems that the efibootmgr bug is upstream.
If there is a way to prevent efibootmgr execution, please tell me. For exemple ubiquity should be patched in some way.
By the way, it should be reported in the release notes that, in order to boot ubuntu from EFI, you need to either install rEFIt or executing these commands from in osx:
$ sudo mount -t msdos /dev/disk0s1 /efi/ ubuntu/ grubx64. efi
$ sudo bless --mount /efi --setBoot --file /efi/EFI/