[PLUG] Grub-pc errors

[Russell Senior]

One of the things this exercise has shown me is that the 'apt' utility
is deleting (by default) the package after it's downloaded. I just
spent a few hours last night tracking down how to make it stop doing
that (the -o option to apt I gave you is one way, using apt-get
instead is another).

The other thing I discovered is that (and maybe this is the source of
your problem), when I went looking for your version of the Ubuntu
debian package on their archives, that it wasn't in the "pool":

  http://us.archive.ubuntu.com/ubuntu/pool/main/g/grub2/

There is a 1ubuntu26.8:

  http://us.archive.ubuntu.com/ubuntu/pool/main/g/grub2/grub-pc_2.04-1ubuntu26.8_amd64.deb

What that suggests is you need to do an update of the package
versions, because it's apparently pointing at a version that is no
longer being hosted in the package feed.

  sudo apt update

  sudo apt full-upgrade

should do the trick.

On Sat, Feb 13, 2021 at 3:12 PM John Jason Jordan <johnxj at gmx.com> wrote:
>
> On Sat, 13 Feb 2021 14:27:20 -0800
> Russell Senior <russell at personaltelco.net> dijo:
>
> >I did some poking around and came up with something for you to try.
> >
> >First, may sure you have the right grub-pc deb package:
> >
> >  dpkg -l grub-pc
> >
> >I see something like this at the end:
> >
> >  ii  grub-pc        2.04-1ubuntu26.8 amd64        GRand Unified
> >Bootloader, version 2 (PC/BIOS version)
>
> My results:
> dpkg -l grub-pc
> Desired=Unknown/Install/Remove/Purge/Hold
> Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
> |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name
>       Version          Architecture Description
> +++-==============-================-============-=================================================>
> iF  grub-pc        2.04-1ubuntu26.4 amd64        GRand Unified
> Bootloader, version 2 (PC/BIOS vers>
>
> >Look in /var/cache/apt/archives for the matching deb file:
> >If you don't see it, try:
> >  apt --reinstall -o APT::Keep-Downloaded-Packages=true install grub-pc
>
> ls: cannot access '/var/cache/apt/archives/grub-pc*': No such file or
> directory
>
> sudo apt --reinstall -o APT::Keep-Downloaded-Packages=true install
> grub-pc
> [sudo] password for jjj: Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> Reinstallation of grub-pc is not possible, it cannot be downloaded.
> 0 upgraded, 0 newly installed, 0 to remove and 25 not upgraded.
> 1 not fully installed or removed.
> After this operation, 0 B of additional disk space will be used.
> Do you want to continue? [Y/n] y
> Setting up grub-pc (2.04-1ubuntu26.4) ...
> dpkg: error processing package grub-pc (--configure):
>  installed grub-pc package post-installation script subprocess returned
> error exit status 1 Errors were encountered while processing:
>  grub-pc
> E: Sub-process /usr/bin/dpkg returned an error code (1)
>
> >You will probably see whatever postinst error you have been seeing.
> >But now you should have the deb file, at least, so try looking for it
> >again:
> >
> >  ls -l /var/cache/apt/archives/grub-pc*
>
> Same error message as above -  it's still not there.
>
> But just now I fired up Synaptic, and it lists grub-pc and grub-pc-bin
> as installed, version 2.04-1ubuntu26.4.
>
> For the past several days the Ubuntu Update Manager has kept popping up
> to tell me that there are some critical security updates that I need to
> install, including a new kernel. I'm going to wait.
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