[Bug 1956835] Re: package linux-firmware 1.187.24 failed to install/upgrade: installed linux-firmware package post-installation script subprocess returned error exit status 1

[Alistair]

I have ZFS (ZSYS) installed and the snapshots on a laptop can fill up the space.  I was able to free up the disk space by loading the zsys config file (not installed by default) and reduce the number of "keep" snapshots.  ZSYS assumes that it is running on a machine that is up most of the time, but if it is not, then there can be large changes (kernel updates) within more than expected snapshots, hence space fills up faster than may have been expected.
The actual space available to /boot is 2G, but when the snapshots don't get garbage collected, the free space gets too small for updates to run.
zsys assumptions and garbage collection default rules need to be re-considered based on usage, even if it is just described in the man/info pages, rather than needing to look them up in didrocks blogs (again).
If the problem was caused by lack of /boot space, close this bug.

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Title:
  package linux-firmware 1.187.24 failed to install/upgrade: installed
  linux-firmware package post-installation script subprocess returned
  error exit status 1

Status in initramfs-tools package in Ubuntu:
  Incomplete

Bug description:
  After updating the system, rebooted and this error appeared.
  Fixed a problem related to /boot/grub/grubenv - "Error in environment" and grub-common.service
  by providing absolute path to grub-editenv.  /boot/grub/grubenv was full of 0x00000, rather than 0x2323 as it has now.

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: linux-firmware 1.187.24
  ProcVersionSignature: Ubuntu 5.11.0-44.48~20.04.2-generic 5.11.22
  Uname: Linux 5.11.0-44-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27.21
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alistair   3520 F.... pulseaudio
  CasperMD5CheckResult: skip
  Date: Sat Jan  8 17:37:06 2022
  Dependencies:
   
  ErrorMessage: installed linux-firmware package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2020-11-12 (422 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  MachineType: Hewlett-Packard HP EliteBook 8470p
  PackageArchitecture: all
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_x1by5v@/vmlinuz-5.11.0-44-generic root=ZFS=rpool/ROOT/ubuntu_x1by5v ro quiet splash vt.handoff=1
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: /usr/bin/python3.8, Python 3.8.10, python-is-python3, 3.8.2-4
  RelatedPackageVersions: grub-pc 2.04-1ubuntu26.13
  SourcePackage: initramfs-tools
  Title: package linux-firmware 1.187.24 failed to install/upgrade: installed linux-firmware package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/12/2018
  dmi.bios.release: 15.113
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68ICF Ver. F.71
  dmi.board.name: 179B
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 42.38
  dmi.chassis.asset.tag: CNU3109W10
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.ec.firmware.release: 66.56
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68ICFVer.F.71:bd04/12/2018:br15.113:efr66.56:svnHewlett-Packard:pnHPEliteBook8470p:pvrA1029D1102:skuC3Q91UC#ABU:rvnHewlett-Packard:rn179B:rvrKBCVersion42.38:cvnHewlett-Packard:ct10:cvr:
  dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI
  dmi.product.name: HP EliteBook 8470p
  dmi.product.sku: C3Q91UC#ABU
  dmi.product.version: A1029D1102
  dmi.sys.vendor: Hewlett-Packard

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