Public bug reported: After upgrading shim-signed to 1.33.1~17.10.1 (and installing the grub updates that were published at the same time), the system is stuck in a boot loop. I've had to downgrade shim and grub to their release versions to get the system to boot again.
The following message gets displayed before the system resets each time: > System BootOrder not found. Initializing defaults. > Creating boot entry "Boot0000" with label "ubuntu" for file > "\EFI\ubuntu\shim64.efi" > > Reset system A similar message, without the last line, was already displayed on successful boots before the update. According to the information in bug #1747889, the Thinkpad X1 Carbon might be affected as well. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: shim 0.9+1474479173.6c180c6-1ubuntu1 ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13 Uname: Linux 4.13.0-32-generic x86_64 .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled' ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Feb 19 11:10:34 2018 Dependencies: EFITables: Feb 19 10:08:21 mdbauman kernel: efi: EFI v2.50 by Lenovo Feb 19 10:08:21 mdbauman kernel: efi: SMBIOS=0xba69b000 SMBIOS 3.0=0xba698000 ACPI=0xbb5fe000 ACPI 2.0=0xbb5fe014 MEMATTR=0xb4a1f298 Feb 19 10:08:21 mdbauman kernel: Secure boot enabled and kernel locked down Feb 19 10:08:21 mdbauman kernel: Bluetooth: hci0: Secure boot is enabled Feb 19 10:18:41 mdbauman fwupd[2852]: disabling plugin because: failed to coldplug uefi: UEFI firmware updating not supported InstallationDate: Installed on 2017-09-09 (162 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926) SecureBoot: 6 0 0 0 1 SourcePackage: shim UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: shim (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug artful ** Attachment added: "Related BIOS settings" https://bugs.launchpad.net/bugs/1750351/+attachment/5058149/+files/BIOS_SETTINGS.pdf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1750351 Title: (Thinkpad T470) Boot loop after update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1750351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs