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Aras Ahmedov
Asked: 2019-05-26 10:21:01 +0800 CST

Updating from such a repository can't be done securely [duplicate]

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When I run sudo apt-get update on Ubuntu 19.04 it results in:

Err:1 http://lt.archive.ubuntu.com/ubuntu disco InRelease
  Could not connect to lt.archive.ubuntu.com:80 (193.219.61.87). - connect (111: Connection refused) Cannot initiate the connection to lt.archive.ubuntu.com:80 (2001:778::87). - connect (101: Network is unreachable)
Err:2 http://lt.archive.ubuntu.com/ubuntu disco-updates InRelease              
  Cannot initiate the connection to lt.archive.ubuntu.com:80 (2001:778::87). - connect (101: Network is unreachable)
Get:3 http://deb.playonlinux.com trusty InRelease [2,590 B]                    
Hit:4 http://security.ubuntu.com/ubuntu disco-security InRelease               
Ign:5 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu disco InRelease
Err:6 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu disco Release
  404  Not Found [IP: 91.189.95.83 80]
Ign:7 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04  InRelease
Get:8 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04  Release [986 B]
Get:9 http://deb.playonlinux.com trusty/main amd64 Packages [564 B]
Get:10 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04  Release.gpg [481 B]
Get:11 http://deb.playonlinux.com trusty/main i386 Packages [564 B]
Get:12 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04  Packages [831 B]
Reading package lists... Done     
E: The repository 'http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu disco 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.

I cannot install any program with sudo apt-get install. How can I fix this situation?

gnome package-management updates apt

1 Answers

  1. You have two problems.

    First, you have a PPA that is 404ing, which means it doesn't support Disco. You need to disable that (it's the GNOME3 team's GNOME3 PPA).

    Secondly, the mirror on lt.archive.ubuntu.com at 193.219.61.87 (IPv4) and 2001:778::87 (IPv6) might be having problems. *

    You may wish to change your mirrors in /etc/apt/sources.list temporarily to use archive.ubuntu.com - the central Archive mirror - to get your updates for now.

     

    * NOTE: I'm going to send this to the Mirrors Team for them to look at, but given this is a holiday weekend there may not be rapid movement on this. This has been filed in Ubuntu's RT tickets system as #33540

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