[Bug 1936759] [NEW] shim-signed 1.48+15.4-0ubuntu5 does not secure boot

[Jacques Williamson]

Public bug reported:

shim-signed package installs with no error with apt upgrade, but then
the system cannot boot afterwards with secure boot enabled. System hangs
indefinitely on UEFI manufacturer logo screen (Dell in this case), not
getting as far as grub. Disabling secure boot is a workaround.

Rolling back to previous shim-signed version 1.46+15.4-0ubuntu1 fixes
the problem (system can once again boot with secure boot enabled).

Done this for now to allow secure boot to be enabled:
$ sudo apt install shim-signed=1.46+15.4-0ubuntu1
$ sudo apt-mark hold shim-signed

Details of system where problem is observed:
- Dell XPS 13 7390 laptop
- Intel® Core™ i7-10510U CPU / 16GB RAM
- BIOS/UEFI firmware version: v1.8.0 (latest)
- Ubuntu hirsute 21.04 64bit (Linux only, single OS, not dual booting)
- Kernel version: 5.11.0-22-generic
- GRUB: 2.04-1ubuntu45

Any questions / additional info, please ask.

** Affects: shim-signed (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1936759

Title:
  shim-signed 1.48+15.4-0ubuntu5 does not secure boot

Status in shim-signed package in Ubuntu:
  New

Bug description:
  shim-signed package installs with no error with apt upgrade, but then
  the system cannot boot afterwards with secure boot enabled. System
  hangs indefinitely on UEFI manufacturer logo screen (Dell in this
  case), not getting as far as grub. Disabling secure boot is a
  workaround.

  Rolling back to previous shim-signed version 1.46+15.4-0ubuntu1 fixes
  the problem (system can once again boot with secure boot enabled).

  Done this for now to allow secure boot to be enabled:
  $ sudo apt install shim-signed=1.46+15.4-0ubuntu1
  $ sudo apt-mark hold shim-signed

  Details of system where problem is observed:
  - Dell XPS 13 7390 laptop
  - Intel® Core™ i7-10510U CPU / 16GB RAM
  - BIOS/UEFI firmware version: v1.8.0 (latest)
  - Ubuntu hirsute 21.04 64bit (Linux only, single OS, not dual booting)
  - Kernel version: 5.11.0-22-generic
  - GRUB: 2.04-1ubuntu45

  Any questions / additional info, please ask.

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