[Bug 1880222] Re: ubuntu bionic-backports Hash Sum mismatch

[Seth Arnold]

Are you still having trouble with this file?

If you still have this file:
/var/lib/apt/lists/partial/us.archive.ubuntu.com_ubuntu_dists_bionic-backports_Contents-i386.gz
can you determine from looking at it if it looks remotely close to what was expected?

The usual cause of this problem is ISP-deployed transparent caches, it
might be worth looking into various websites for "am I behind a proxy?".
I've seen apt-cacher-ng cause this problem too, but that was seven years
ago.

The version of this file I retrieved a few minutes ago from all four
archive mirrors that I can reach were identical, and matched what the
Release file says they should match.

Thanks

** Information type changed from Private Security to Public Security

** Changed in: apt (Ubuntu)
       Status: New => Incomplete

** Changed in: update-manager (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to apt in Ubuntu.
https://bugs.launchpad.net/bugs/1880222

Title:
  ubuntu bionic-backports Hash Sum mismatch

Status in apt package in Ubuntu:
  Incomplete
Status in update-manager package in Ubuntu:
  Incomplete

Bug description:
  # apt-get update
  (proceeded normally until...)
  Err:24 http://us.archive.ubuntu.com/ubuntu bionic-backports i386 Contents (deb)
    Hash Sum mismatch
    Hashes of expected file:
     - Filesize:724924 [weak]
     - SHA256:d59f30b35a9fd0f52922cbf3a4bf1f0713e816a209cca57bac1dbc56af3c9a77
     - SHA1:0d1e53232da2c41febc6cccecfc4000f930c3450 [weak]
     - MD5Sum:dfa1f7010a23b70c967aef7600ebd49f [weak]
    Hashes of received file:
     - SHA256:1c97d900fc3b9168c38bf870b1dd7c71be88ff72e0751c1551b8129c8de98740
     - SHA1:a725025e50c3ebd60dd16058594340b4ca9c97e2 [weak]
     - MD5Sum:925bb2a78f81a2dc9b4269a6f5e9ece5 [weak]
     - Filesize:90948 [weak]
    Release file created at: Fri, 22 May 2020 16:49:51 +0000
  Fetched 254 MB in 51s (5,014 kB/s)
  Reading package lists... Done
  E: Failed to fetch store:/var/lib/apt/lists/partial/us.archive.ubuntu.com_ubuntu_dists_bionic-backports_Contents-i386.gz  Hash Sum mismatch
     Hashes of expected file:
      - Filesize:724924 [weak]
      - SHA256:d59f30b35a9fd0f52922cbf3a4bf1f0713e816a209cca57bac1dbc56af3c9a77
      - SHA1:0d1e53232da2c41febc6cccecfc4000f930c3450 [weak]
      - MD5Sum:dfa1f7010a23b70c967aef7600ebd49f [weak]
     Hashes of received file:
      - SHA256:1c97d900fc3b9168c38bf870b1dd7c71be88ff72e0751c1551b8129c8de98740
      - SHA1:a725025e50c3ebd60dd16058594340b4ca9c97e2 [weak]
      - MD5Sum:925bb2a78f81a2dc9b4269a6f5e9ece5 [weak]
      - Filesize:90948 [weak]
     Release file created at: Fri, 22 May 2020 16:49:51 +0000
  E: Some index files failed to download. They have been ignored, or old ones used instead.

  $ apt-get -v
  apt 1.6.12ubuntu0.1 (amd64)

  Also, Software Updater (version 1:18.04.11.12) after hitting "Install" gives pop-up:
  "Requires installation of untrusted packages
   This requires installing packages from unauthenticated sources."
  Only options: "Settings..." and "OK"
  And it is not OK; I have not configured any unauthenticated sources!

  This occurs when enabling updates from Ubuntu Base (but not Security
  updates).

  I expected to not get such errors and updating to occur normally.

  $ lsb_release -rd
  Description:	Ubuntu 18.04.4 LTS
  Release:	18.04

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1880222/+subscriptions