0

I'm using Pop_Os! 20.04. While trying to upgrade it i'm getting the following error :

sudo apt-get upgrade

Get:1 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 apparmor amd64 

2.13.3-7ubuntu5.1 [494 kB]
Err:1 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 apparmor amd64 2.13.3-7ubuntu5.1
  Hash Sum mismatch
  Hashes of expected file:
   - SHA256:6359c1166bdc8946d83d5ccf0a51d22d3e65698bcbfb407b8c51cb0cf0fa693b
   - SHA1:583e8718e1d7df0ac1cec1d172a00b5c1f3e068a [weak]
   - MD5Sum:c9472e4b9fed70d333a94abf4def982f [weak]
   - Filesize:494020 [weak]
  Hashes of received file:
   - SHA256:3e93ae0f10e6ad2f187e62d903692ea4d1df89aabbf0bc0b891f0ccb1a7a1f06
   - SHA1:2b2318c322cf63cf31a9a956b8e1fc4109c95071 [weak]
   - MD5Sum:16db382d293cd562a529fbcc52b69691 [weak]
   - Filesize:494020 [weak]
  Last modification reported: Fri, 22 May 2020 11:58:22 +0000
Fetched 494 kB in 1s (636 kB/s)  
E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/a/apparmor/apparmor_2.13.3-7ubuntu5.1_amd64.deb  Hash Sum mismatch
   Hashes of expected file:
    - SHA256:6359c1166bdc8946d83d5ccf0a51d22d3e65698bcbfb407b8c51cb0cf0fa693b
    - SHA1:583e8718e1d7df0ac1cec1d172a00b5c1f3e068a [weak]
    - MD5Sum:c9472e4b9fed70d333a94abf4def982f [weak]
    - Filesize:494020 [weak]
   Hashes of received file:
    - SHA256:3e93ae0f10e6ad2f187e62d903692ea4d1df89aabbf0bc0b891f0ccb1a7a1f06
    - SHA1:2b2318c322cf63cf31a9a956b8e1fc4109c95071 [weak]
    - MD5Sum:16db382d293cd562a529fbcc52b69691 [weak]
    - Filesize:494020 [weak]
   Last modification reported: Fri, 22 May 2020 11:58:22 +0000

I have looked at different solutions which try to fix it when this occurs during

sudo apt-get update

but my update command works fine.

Solutions i tried were removing the apt lists and updating it again. I also tried setting acquire-by-hash to yes but it didn't work either. I think the problem here is not the same.

1

The following steps might help solving the issue:

Refreshing the APT cache

sudo apt-get clean
sudo apt-get update

Refreshing the APT lists

sudo rm -R /var/lib/apt/lists/*
sudo apt-get update

Refreshing both

sudo apt-get clean
sudo rm -R /var/lib/apt/lists/*
sudo apt-get update

But in cases it might be simply a temporary issue with the used APT mirror, which means that you should take a coffee and retry a few hours or a night later, before investing too much time to investigate an issue which solves itself shortly after ;).

2
  • 1
    I guess the issue was with the mirror. I already tried the above solutions but it didn't work. But after some time it just magically started working ;) – mr_pool_404 Jun 8 '20 at 8:28
  • Indeed not an uncommon issue. For a single user/system it happens rarely or never, but we maintain a distro based on Debian/Raspbian repo and get similar reports regularly. – MichaIng Jun 8 '20 at 8:51
0

(Running Mint in a VM) - I had to disable the Windows Sandbox feature AND WSL. Then I could just run the sudo apt update command and everything was fine.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.