[Bug 1866152] [NEW] UEFI prevents live version from loading 18.04

[Trent Tschirgi]

Public bug reported:

System: Lenovo ThinkPad E590
64-bit core i7 processor
UEFI
Preloaded with Win 10 booting from UEFI

Process attempted to dual-boot Ubuntu 18.04 with Windows 10;

Unable to run Ubuntu 18.04 installer from a flash key.
System gave one long beep, computer restarted.

Disabled Bitlocker under Windows
Disabled Secure Boote in UEFI

Attempted to start from flash key again,
with Ubuntu 18.04 64-bit

Received error message on black screen:

Failed to open efi\BOOT\mmx64.efi
Failed to load image efi\BOOT\mmx64.efi not found
Failed to start Mokmanager
Something has gone seriously wrong
import_mok state failed(): not found

Attempted to force boot Ubuntu 18.04 from flash drive using Supergrub
2-beta.

Supergrub message:
"Sorry but we are booted via UEFI and can not load this OS.  Please try booting SG2D via BIOS compatibility mode.  Press ESC to return to main menu."  

So it looks like I can't use the 18.04 installer to load Ubuntu on my
laptop under UEFI-- It may be possible to do it under Legacy/BIOS, but
then I can not have a dual-boot system.

** Affects: syslinux (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1866152

Title:
  UEFI prevents live version from loading 18.04

Status in syslinux package in Ubuntu:
  New

Bug description:
  System: Lenovo ThinkPad E590
  64-bit core i7 processor
  UEFI
  Preloaded with Win 10 booting from UEFI

  Process attempted to dual-boot Ubuntu 18.04 with Windows 10;

  Unable to run Ubuntu 18.04 installer from a flash key.
  System gave one long beep, computer restarted.

  Disabled Bitlocker under Windows
  Disabled Secure Boote in UEFI

  Attempted to start from flash key again,
  with Ubuntu 18.04 64-bit

  Received error message on black screen:

  Failed to open efi\BOOT\mmx64.efi
  Failed to load image efi\BOOT\mmx64.efi not found
  Failed to start Mokmanager
  Something has gone seriously wrong
  import_mok state failed(): not found

  Attempted to force boot Ubuntu 18.04 from flash drive using Supergrub
  2-beta.

  Supergrub message:
  "Sorry but we are booted via UEFI and can not load this OS.  Please try booting SG2D via BIOS compatibility mode.  Press ESC to return to main menu."  

  So it looks like I can't use the 18.04 installer to load Ubuntu on my
  laptop under UEFI-- It may be possible to do it under Legacy/BIOS, but
  then I can not have a dual-boot system.

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