Ubuntu 18.04.1 LTS -Xubuntu- não atualiza [RESOLVIDO]

Betoalfa
(usa Ubuntu)

Enviado em 23/09/2018 - 10:12h

Olá. Desde que atualizei meu ubuntu 14 para 18 ocorrem falhas na atualização. Toda vez que entro no Ubuntu vem uma mensagem de que houve falha na atualização. Por meio do terminal obtive esta resposta:
~$ sudo apt-get update
Atingido:1 http://archive.canonical.com/ubuntu bionic InRelease
Atingido:2 http://security.ubuntu.com/ubuntu bionic-security InRelease
Err:3 http://br.archive.ubuntu.com/ubuntu bionic InRelease
Não foi possível resolver 'br.archive.ubuntu.com'
Err:4 http://br.archive.ubuntu.com/ubuntu bionic-updates InRelease
Não foi possível resolver 'br.archive.ubuntu.com'
Err:5 http://br.archive.ubuntu.com/ubuntu bionic-backports InRelease
Não foi possível resolver 'br.archive.ubuntu.com'
Lendo listas de pacotes... Pronto
W: Falhou ao buscar http://br.archive.ubuntu.com/ubuntu/dists/bionic/InRelease Não foi possível resolver 'br.archive.ubuntu.com'
W: Falhou ao buscar http://br.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease Não foi possível resolver 'br.archive.ubuntu.com'
W: Falhou ao buscar http://br.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease Não foi possível resolver 'br.archive.ubuntu.com'
W: Falhou o download de alguns ficheiros de índice. Foram ignorados ou os antigos foram usados em seu lugar.
Como posso resolver?

F9KILL
(usa Debian)

Enviado em 24/09/2018 - 16:37h

Parece que o seu sources.list ficou bagunçado.

Primeiro faça uma cópia dele por segurança:

sudo cp /etc/apt/sources.list /etc/apt/sources.list-backup 

Depois abra ele com algum edito e apague todo o conteúdo dele, e cole esse que está abaixo:

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to

# newer versions of the distribution.

deb http://us.archive.ubuntu.com/ubuntu/ bionic main restricted

# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic main restricted



## Major bug fix updates produced after the final release of the

## distribution.

deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted

# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted



## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu

## team. Also, please note that software in universe WILL NOT receive any

## review or updates from the Ubuntu security team.

deb http://us.archive.ubuntu.com/ubuntu/ bionic universe

# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic universe

deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe

# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe



## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 

## team, and may not be under a free licence. Please satisfy yourself as to 

## your rights to use the software. Also, please note that software in 

## multiverse WILL NOT receive any review or updates from the Ubuntu

## security team.

deb http://us.archive.ubuntu.com/ubuntu/ bionic multiverse

# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic multiverse

deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse

# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse



## N.B. software from this repository may not have been tested as

## extensively as that contained in the main release, although it includes

## newer versions of some applications which may provide useful features.

## Also, please note that software in backports WILL NOT receive any review

## or updates from the Ubuntu security team.

deb http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse

# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse



## Uncomment the following two lines to add software from Canonical's

## 'partner' repository.

## This software is not part of Ubuntu, but is offered by Canonical and the

## respective vendors as a service to Ubuntu users.

# deb http://archive.canonical.com/ubuntu bionic partner

# deb-src http://archive.canonical.com/ubuntu bionic partner



deb http://security.ubuntu.com/ubuntu bionic-security main restricted

# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted

deb http://security.ubuntu.com/ubuntu bionic-security universe

# deb-src http://security.ubuntu.com/ubuntu bionic-security universe

deb http://security.ubuntu.com/ubuntu bionic-security multiverse

# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse 

Betoalfa
(usa Ubuntu)

Enviado em 29/09/2018 - 09:58h

na verdade, resolvi com esta dica muito bem escrita e que leva em conta o iniciante:
https://www.diolinux.com.br/2017/01/ttf-mscorefonts-installer-erro-ubuntu-fix.html