[Bug 1790586] Re: The proposed grub package in Trusty overrides the boot order on a MaaS deployed ThunderX system

[Po-Hsu Lin]

** Tags added: bionic

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Title:
  The proposed grub package in Trusty overrides the boot order on a MaaS
  deployed ThunderX system

Status in grub2 package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Similar to bug 1642298, bug 1750732 and bug 1788539

  This issue was only spotted on ThunderX Cavium ARM64 system and an AMD
  Naples amd64 server in this SRU cycle.

  Steps:
  1. Deploy the ThunderX system with Trusty + T-LTS 4.4 kernel (It works fine with just Trusty, however this was tested on the AMD Naples, not ThunderX since it does not support 3.13 kernel)
  2. Check the efibootmgr output
  3. Enable proposed, install grub-common
  4. Check efibootmgr again

  Result:
  In step 2, the boot order is correct:
  ubuntu at wright-kernel:~$ sudo efibootmgr
  BootCurrent: 0002
  Timeout: 10 seconds
  BootOrder: 0002,0000,0003,0004,0001
  Boot0000* ubuntu
  Boot0001  UEFI: Built-in EFI Shell
  Boot0002* UEFI: IP4 Ethernet vNIC Controller 62:54:CA
  Boot0003* UEFI: IP4 Ethernet vNIC Controller 62:54:CB
  Boot0004* UEFI: IP4 Ethernet vNIC Controller 62:54:CC

  But in step 4, the boot order will be overridden:
  ubuntu at wright-kernel:~$ sudo efibootmgr
  BootCurrent: 0002
  Timeout: 10 seconds
  BootOrder: 0000,0002,0003,0004,0001
  Boot0000* ubuntu
  Boot0001  UEFI: Built-in EFI Shell
  Boot0002* UEFI: IP4 Ethernet vNIC Controller 62:54:CA
  Boot0003* UEFI: IP4 Ethernet vNIC Controller 62:54:CB
  Boot0004* UEFI: IP4 Ethernet vNIC Controller 62:54:CC

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: grub-common 2.02~beta2-9ubuntu1.15
  ProcVersionSignature: User Name 4.4.0-134.160~14.04.1-generic 4.4.140
  Uname: Linux 4.4.0-134-generic aarch64
  ApportVersion: 2.14.1-0ubuntu3.29
  Architecture: arm64
  Date: Tue Sep  4 07:45:19 2018
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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