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

[Po-Hsu Lin]

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

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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:
  New

Bug description:
  Similar to bug 1642298, bug 1750732 and bug 1788539
  This issue was only spotted on ThunderX Cavium ARM64 system in this SRU cycle. It works fine with ARM64 moonshot, and other X86 systems.
  (I will check on that AMD Naples later)

  Steps:
  1. Deploy the ThunderX system with Trusty + X-HWE 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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