Updating from such a repository can't be done securely

apt gnome package-management updates

14,634

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}

14,634

Aras Ahmedov

Updated on September 18, 2022

Comments

Aras Ahmedov over 1 year

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?

Thomas Ward almost 5 years

The mirror you're using is down, at least via IPv6. I'mma relay this to the MIrrors team for them to take a look. Switch your mirrors to archive.ubuntu.com in the inteirm.
user535733 almost 5 years

Two of the errors look like PPAs that do not have packages for your release of Ubuntu. Disable those PPAs.

Aras Ahmedov almost 5 years

I solved the first problem thanks to you. but unfortunately in second problem, I changed the deb http://lt.archive.ubuntu.com/ubuntu/ disco-updates main the mirror with yours archive.ubuntu.com but it didn`t work out. did I changed the correct thing ?
Thomas Ward almost 5 years

I would need to see what you changed. Chances are you didnt edit the lines right.
Aras Ahmedov almost 5 years

Thanks to you the problem is solved.