Il 07/12/2016 17:25, Giovanni Santini ha scritto:

Il 29/11/2016 10:49, David Phillips ha scritto:

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I'm not familiar with GRUB anymore, but it sounds like perhaps the file bootmgfw.efi has not been signed with a key that is trusted by your board's SecureBoot feature. Hence, booting with SB enabled causes a load failure while booting without SB fixes the problem.

Good afternoon, as here I had no major suggestion about what to do, I decided to ask help in the official mailing list as you can see in [1]. After some tests, we found a small bug in grub that prevented the chainload of EFI executables. This fixes my problem. However, it is not present in the official package yet; I suppose that opening a bug report online should be enough.

[1] http://lists.gnu.org/archive/html/help-grub/2016-12/msg00001.html [2] http://git.savannah.gnu.org/cgit/grub.git/commit/?id=ce95549cc54b5d6f494608a...