[Bug 2127235] Re: installed linux-image-6.8.0-85-generic package post-installation script subprocess returned error exit status 127

This is the problematic line:
add video=DP-1:1920x1080

For now, comment it out, i.e. change it to:
#add video=DP-1:1920x1080

That should allow you to upgrade everything successfully.

I'm not sure where you got that syntax or the 'add' keyword.


** Package changed: linux (Ubuntu) => grub2 (Ubuntu)

** Summary changed:

- installed linux-image-6.8.0-85-generic package post-installation script subprocess returned error exit status 127
+ grub-mkconfig: 31: /etc/default/grub: add: not found

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https://bugs.launchpad.net/bugs/2127235

Title:
grub-mkconfig: 31: /etc/default/grub: add: not found

Status in grub2 package in Ubuntu:
New

Bug description:
My laptop keeps trying to do a partial upgrade and at the end says there were errors during the upgrade.
The error is 'installed linux-image-6.8.0-85-generic package post-installation script subprocess returned error exit status 127'.
---
ProblemType: Bug
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: llip 6864 F.... wireplumber
/dev/snd/controlC0: llip 6864 F.... wireplumber
/dev/snd/seq: llip 6859 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: unknown
CurrentDesktop: GNOME-Classic:GNOME
DistroRelease: Ubuntu 24.04
InstallationDate: Installed on 2021-10-03 (1468 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 1ea7:0066 SHARKOON Technologies GmbH [Mediatrack Edge Mini Keyboard]
Bus 001 Device 003: ID 13d3:56a6 IMC Networks Integrated Camera
Bus 001 Device 004: ID 0bda:b023 Realtek Semiconductor Corp. RTL8822BE Bluetooth 4.2 Adapter
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: LENOVO 81LB
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-84-generic root=UUID=b0a9de9a-0e26-4598-a70f-935ebbdef6bd ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 6.8.0-84.84-generic 6.8.12
RelatedPackageVersions:
linux-restricted-modules-6.8.0-84-generic N/A
linux-backports-modules-6.8.0-84-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.17
Tags: noble
Uname: Linux 6.8.0-84-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 11/30/2020
dmi.bios.release: 1.22
dmi.bios.vendor: LENOVO
dmi.bios.version: 9VCN22WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo Legion Y530-15ICH-1060
dmi.ec.firmware.release: 1.22
dmi.modalias: dmi:bvnLENOVO:bvr9VCN22WW:bd11/30/2020:br1.22:efr1.22:svnLENOVO:pn81LB:pvrLenovoLegionY530-15ICH-1060:rvnLENOVO:rnLNVNB161216:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrLenovoLegionY530-15ICH-1060:skuLENOVO_MT_81LB_BU_idea_FM_LegionY530-15ICH-1060:
dmi.product.family: Legion Y530-15ICH-1060
dmi.product.name: 81LB
dmi.product.sku: LENOVO_MT_81LB_BU_idea_FM_Legion Y530-15ICH-1060
dmi.product.version: Lenovo Legion Y530-15ICH-1060
dmi.sys.vendor: LENOVO

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