[Bug 1901365] Re: package grub-pc 2.02~beta2-36ubuntu3.28 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127

[Julian Andres Klode]

Seems like you fixed your /etc/default/grub between the bug occuring and
your report.

I suggest you visit ask.ubuntu.com, the forums, IRC, or another user
support for user support questions.

** Changed in: grub2 (Ubuntu)
       Status: New => Invalid

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Title:
  package grub-pc 2.02~beta2-36ubuntu3.28 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 127

Status in grub2 package in Ubuntu:
  Invalid

Bug description:
  I have this error and other errors as a result of the loss of my HDMI
  audio driver from my AMD HD Radeon 6570 video card on Ubuntu 16.04
  LTS. There are a number of kernels that can't update. I'm stuck with a
  partial upgrade with many errors all because the HDMI audio driver
  would not load after unplugging my Cakewalk UA25-EX Sound Card from
  the USB port.It seems that I have not been able to restore the HDMI
  audio driver which shows up in constant error messages and is
  affecting any updates. It also affects the way the video driver loads
  the desktop. I am curious about how to resolve this problem so that
  updates can be normal not partials with errors. The name of the video
  driver that shares the audio driver name is AMD TURKS (DRM 2.43.0 /
  4.4.0-173-generic, LLVM 6.0.0). I presume that the HDMI audio is
  similar Turks/Whistler HDMI Audio [Radeon HD 6000 Series]. The
  Cakewalk UA25-EX USB Audio drivers work perfectly. It is the HDMI
  Audio driver that is the problem. I was thinking about taking out the
  video card and booting from on board graphics to reset the hard drive
  and then putting the video card back in and maybe the HDMI audio will
  be recognized again but because of all these kernel errors, I'm scared
  that it might make things worse than before and possibly not boot-
  able. Does anyone have any suggestions to resolve this problem,
  restoring the HDMI audio and correcting the broken kernels which are
  constantly evident any time I try to update the system. I have a
  Gateway DX4300 computer with 8GB of RAM and a AMD Phenom(tm) 9750
  Quad-Core Processor × 4 . The video driver is the AMD TURKS (DRM
  2.43.0 / 4.4.0-173-generic, LLVM 6.0.0). The video card is a AMD HD
  Radeon 6570 video card.I think that the package name is package grub-
  pc 2.02~beta2-36ubuntu3.28. I don't know the version number.

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-pc 2.02~beta2-36ubuntu3.28
  ProcVersionSignature: Ubuntu 4.4.0-173.203-generic 4.4.208
  Uname: Linux 4.4.0-173-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.25
  Architecture: amd64
  Date: Sat Oct 24 19:26:34 2020
  DuplicateSignature:
   package:grub-pc:2.02~beta2-36ubuntu3.28
   Setting up grub-pc (2.02~beta2-36ubuntu3.28) ...
   /var/lib/dpkg/info/grub-pc.config: 1: /etc/default/grub: radeon.audio=1#: not found
   dpkg: error processing package grub-pc (--configure):
    subprocess installed post-installation script returned error exit status 127
  ErrorMessage: subprocess installed post-installation script returned error exit status 127
  InstallationDate: Installed on 2019-04-17 (556 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  InvalidGrubScript: /etc/default/grub
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-173-generic root=UUID=d095aa3f-96d5-4645-be23-2a273fda157f ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.6
   apt  1.2.32ubuntu0.1
  SourcePackage: grub2
  Title: package grub-pc 2.02~beta2-36ubuntu3.28 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127
  UpgradeStatus: No upgrade log present (probably fresh install)

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