[Bug 1853022] Re: shim-signed package can not be configured on Lenovo Yoga C630 WOS

[Dimitri John Ledkov]

It is correct, On the yoga C630 WOS normal UEFI variable writting is not
supported by the hardware firmware.

At most, I have managed to use Windows 10 utilities to override the path
of the windows bootloader to point at the grub efi app, and can be done
to point at the shim.

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Title:
  shim-signed package can not be configured on Lenovo Yoga C630 WOS

Status in grub2 package in Ubuntu:
  New
Status in shim package in Ubuntu:
  New

Bug description:
  Hello!

  Besides issue with shim itself described in Bug 1849863 I noticed that
  there is also issue with shim-signed package installation script.
  Attempt to install shim-signed on Lenovo Yoga C630 WOS cause following
  errors and left shim-signed package in unconfigured state, which will
  cause more issues later on (for instance update-manager will always
  try configure shim-signed on every upgrade).

  Installing for arm64-efi platform.
  grub-install: warning: Cannot set EFI variable Boot0000.
  grub-install: warning: efivarfs_set_variable: writing to fd 7 failed: Invalid argument.
  grub-install: warning: efivarfs_set_variable: failed to unlink /sys/firmware/efi/efivars/Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c: Invalid argument.
  grub-install: warning: _efi_set_variable_mode: ops->set_variable() failed: Invalid argument.
  grub-install: error: failed to register the EFI boot entry: Invalid argument.
  dpkg: error processing package shim-signed (--configure):
   installed shim-signed package post-installation script subprocess returned error exit status 1
  Processing triggers for man-db (2.8.7-3) ...
  Errors were encountered while processing:
   shim-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  Setting up shim-signed (1.39+15+1533136590.3beb971-0ubuntu1) ...

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