[Bug 1867502] Re: Netboot Loading libc6-udeb failed for unknown reasons (focal)

[christopheg]

For those not using preseed, the above trick is also working. They just
have to open a command line from the installer before updates (did it
just before the network detection) and apply the sed command:

sed -i -e '/Package:
libc6-udeb/{N;N;s/Version: 2.3.*/Version: 2.31-0ubuntu9.3/}'
/var/lib/dpkg/status

This will trick a system which has version 2.31 of libc6-udeb to believe
it have 2.31-0ubuntu9.3 (more up to date than the broken online
version), thus not updating it.

They you just exit from the command line and proceed with the
installation as usual.

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https://bugs.launchpad.net/bugs/1867502

Title:
  Netboot Loading libc6-udeb failed for unknown reasons (focal)

Status in debian-installer package in Ubuntu:
  Confirmed

Bug description:
  With the netboot image from march 10
  (http://archive.ubuntu.com/ubuntu/dists/focal/main/installer-
  amd64/current/images/netboot/) it shows me following error at
  partition disk space step

            ???????????????????? [!!] Detect disks ?????????????????????
            ? ?
            ? Failed to load installer component ?
            ? Loading libc6-udeb failed for unknown reasons. Aborting. ?
            ? ?
            ? <Go Back> <Continue> ?
            ? ?
            ????????????????????????????????????????????????????????????

  This has also confirmed in the comment
  https://bugs.launchpad.net/ubuntu/+source/debian-
  installer/+bug/1817358/comments/41

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