** Description changed: + [Impact] + Booting MacBook is broken + + [Test plan] + We don't have a test plan per se to verify this bug, but the shim fix has been tested. Hard to verify those bugs :( + + [Where problems could occur] + We disable mirroring of vendor dbx into MokListXRT EFI variable, so mokutil is not able to read the vendor dbx anymore. Other things might not be able to do so either; we don't believe we've been using it so far, though. + + [Original bug report] Hi, I have a MacBookPro14,3. After upgrade to Ubuntu 21.04 it failed to boot. At first I thought I'm affected by https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1925010. But my MacBook has newer efi Version and the fixed version of shim- signed is not solving my issues. >sudo dmesg | grep EFI [ 0.000000] efi: EFI v2.40 by Apple [ 0.011978] ACPI: UEFI 0x000000007AF7D000 000042 (v01 INTEL EDK2 00000002 01000013) [ 0.012029] ACPI: Reserving UEFI table memory at [mem 0x7af7d000-0x7af7d041] [ 0.411423] fb0: EFI VGA frame buffer device [ 0.418914] EFI Variables Facility v0.08 2004-May-17 [ 2.696996] fb0: switching to amdgpudrmfb from EFI VGA I reinstalled Ubuntu 21.04 from scratch and updated all packages during installation. The reboot failed. I hear the apple start sound and then an endless repeating echo. I've chrooted inside my system and verified that shim-signed 1.47+15.4-0ubuntu2 is installed. The suggested workaround from the other bug works (I can normally boot afterwards): /boot/efi/EFI# cp -b ubuntu/grubx64.efi ubuntu/shimx64.efi /boot/efi/EFI# cp -b ubuntu/grubx64.efi BOOT/BOOTX64.EFI "sudo apt reinstall shim-signed" reliable breaks my macbook again. Is there anything I can do to help solving this issue? What do you need?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1928434 Title: shim-signed does not boot on EFI 2.40 by Apple To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1928434/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
