Question

1

20.04 sudo apt update is showing the error: http://ddebs.ubuntu.com focal-security Release 404 Not Found

rated 0 times [ 1] [ 0] / answers: 1 / hits: 772 / 2 Years ago, sat, march 12, 2022, 4:10:10

I was trying the steps in following link:

https://wiki.ubuntu.com/Kernel/CrashdumpRecipe?action=show&redirect=KernelTeam%2FCrashdumpRecipe

FYI: the commands I used:
sudo apt-get install linux-crashdump

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
sudo apt-get update
Sudo apt update is showing following result:

Err:15 http://ddebs.ubuntu.com focal-security Release

  404  Not Found [IP: 185.125.188.12 80]



Reading package lists... Done

E: The repository 'http://ddebs.ubuntu.com focal-security Release' does not have a Release file.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

W: GPG error: http://ddebs.ubuntu.com focal Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C8CAB6595FDFF622

E: The repository 'http://ddebs.ubuntu.com focal Release' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

W: GPG error: http://ddebs.ubuntu.com focal-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C8CAB6595FDFF622

E: The repository 'http://ddebs.ubuntu.com focal-updates Release' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

W: GPG error: http://ddebs.ubuntu.com focal-proposed Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C8CAB6595FDFF622

E: The repository 'ddebs ubuntu com focal-proposed Release' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

aciousoun

Add To Favorites

Follow

Total Points: 178

Total Questions: 110

Total Answers: 98

Location: Lithuania

Member since Fri, Sep 4, 2020

4 Years ago

aciousoun questions

1 How can I store the IP and Port that are separated by ":" to two variables?

Sat, May 27, 23, 02:24, 1 Year ago

1 Ubuntu 20.04 won't wake from suspend or completely shutdown

Wed, Apr 6, 22, 20:05, 2 Years ago

1 File Location in Hard Disks

Sat, Aug 14, 21, 14:40, 3 Years ago

1 Thunderbird "Open Message in Conversation" sometimes opens different thread

Wed, Apr 20, 22, 08:59, 2 Years ago

1 ubuntu 18.04 software-properties-gtk failing

Tue, Aug 24, 21, 14:19, 3 Years ago

View All

answered 2 Years ago taigysel · Accepted Answer

Execute the below command:

sudo tee /etc/apt/sources.list.d/ddebs.list << EOF

deb http://ddebs.ubuntu.com/ $(lsb_release -cs)          main restricted universe multiverse

deb http://ddebs.ubuntu.com/ $(lsb_release -cs)-security main restricted universe multiverse

deb http://ddebs.ubuntu.com/ $(lsb_release -cs)-updates  main restricted universe multiverse

deb http://ddebs.ubuntu.com/ $(lsb_release -cs)-proposed main restricted universe multiverse

EOF

After that delete the /etc/apt/source.list.d/ddebs.list file:

Then try running:

sudo apt update