Not a kernel bug.
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/1790586
Title:
The proposed grub package in Trusty / Bionic overrides the boot order
on a MaaS deployed system
Status in ubuntu-kernel-tests:
Confirmed
Status in grub2 package in Ubuntu:
Incomplete
Status in linux package in Ubuntu:
Invalid
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@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@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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