[Bug 1761336] Re: Drops to grub> prompt in Secure Boot Mode

Mathieu Trudel-Lapierre mathieu.tl at gmail.com
Tue Apr 24 13:33:05 UTC 2018


Could MSI Fast Boot skip scanning devices which the EFI subsystem in the
ESP's copy of grub rely on?

There are also actually two "ubuntu" entries in firmware, one with extra
firmware-specific extra options appended. One may work with fastboot
while the other does not.

If you re-enable Fastboot and hit F12, does one of the two 'ubuntu'
entries you should see there work normally?


** Changed in: shim-signed (Ubuntu)
       Status: New => Incomplete

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Title:
  Drops to grub> prompt in Secure Boot Mode

Status in shim-signed package in Ubuntu:
  Incomplete

Bug description:
  I've Ubuntu installed with Windows 10 in dual-boot. When I run the PC or when I restart it this happens:
  1. I see the motherload screen.
  2. A grub command line appears.
  3. I type 'exit' to halt it.
  4. The motherload screen appears again.
  5. Finally the grub where I can select the OS shows up and all runs properly.
  --- 
  .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No existe el archivo o el directorio: '/proc/sys/kernel/moksbstate_disabled'
  ApportVersion: 2.20.1-0ubuntu2.15
  Architecture: amd64
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 16.04
  EFITables:
   abr 05 15:07:13 toni-MS-7922 kernel: efi: EFI v2.31 by American Megatrends
   abr 05 15:07:13 toni-MS-7922 kernel: efi:  ESRT=0xdef80998  ACPI 2.0=0xde7c8000  ACPI=0xde7c8000  SMBIOS=0xf04d0  MPS=0xfd520 
   abr 05 15:07:13 toni-MS-7922 kernel: esrt: Reserving ESRT space from 0x00000000def80998 to 0x00000000def809d0.
   abr 05 15:07:13 toni-MS-7922 kernel: Secure boot could not be determined
  InstallationDate: Installed on 2018-04-04 (0 days ago)
  InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
  Package: shim-signed 1.33.1~16.04.1+13-0ubuntu2
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 4.13.0-38.43~16.04.1-generic 4.13.16
  SecureBoot: 6   0   0   0   0
  Tags:  xenial
  Uname: Linux 4.13.0-38-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True

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