Atualização do Apt-Get: falha ao buscar; não pode se conectar a nenhuma fonte

22

Percebo que existem dezenas de perguntas "apt-get update: falha ao buscar" (li tudo o que pude encontrar), mas minha circunstância atual é exclusiva para 12.04 e afeta todas as fontes; não apenas a barra de lançamento. Além disso, tentei vários servidores diferentes na Europa e nos EUA, bem como o "servidor principal" (onde quer que esteja) e todos eles produzem o mesmo resultado: não consigo conectar-me a nenhuma fonte de software.

Além disso, estou bastante certo de que o problema decorre da atualização de 11.10-> 12.04 que realizei esta manhã, pois as atualizações funcionavam imediatamente antes.

As atualizações do Update Manager funcionaram bem e eu pude baixar algumas coisas (murmurar) do Centro de Software sem incidentes, o que me faz pensar que posso me conectar a algum subconjunto dos servidores Ubuntu (no entanto, vários outros servidores Ubuntu - como extras - e alguns servidores canônicos estão listados como 'incapazes de conectar').

Aqui está a saída de sudo apt-get update:

sudo apt-get update
Ign http://ftp.u-picardie.fr precise InRelease
Ign http://archive.canonical.com precise InRelease                                                                        
Ign http://ftp.u-picardie.fr precise-updates InRelease                                                                    
Ign http://ftp.u-picardie.fr precise-backports InRelease                                                                  
Err http://ftp.u-picardie.fr precise-security InRelease                                                                    

Err http://ftp.u-picardie.fr precise Release.gpg                                                                           
  Unable to connect to ftp.u-picardie.fr:http:
Err http://ftp.u-picardie.fr precise-updates Release.gpg                                                                  
  Unable to connect to ftp.u-picardie.fr:http:
Err http://ftp.u-picardie.fr precise-backports Release.gpg                                                                
  Unable to connect to ftp.u-picardie.fr:http:
Err http://ftp.u-picardie.fr precise-security Release.gpg                                                                 
  Unable to connect to ftp.u-picardie.fr:http:
Hit http://archive.canonical.com precise Release.gpg                                                                      
Hit http://archive.canonical.com precise Release                                                                          
Hit http://archive.canonical.com precise/partner i386 Packages                                                              
Ign http://archive.canonical.com precise/partner TranslationIndex                                    
Ign http://dl.google.com stable InRelease                                                            
Ign http://dl.google.com stable InRelease                                                    
Err http://archive.canonical.com precise/partner Translation-en_US                           
  Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80]
Err http://archive.canonical.com precise/partner Translation-en                              
  Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80]
Ign http://extras.ubuntu.com precise InRelease                                               
Get:1 http://dl.google.com stable Release.gpg [198 B]                                        
Err http://extras.ubuntu.com precise Release.gpg                                      
  Could not connect to extras.ubuntu.com:80 (91.189.88.33). - connect (111: Connection refused)
Ign http://ppa.launchpad.net precise InRelease                                        
Err http://ppa.launchpad.net precise InRelease                             

Err http://ppa.launchpad.net precise InRelease                             

Err http://ppa.launchpad.net precise InRelease                             

Err http://ppa.launchpad.net precise InRelease                             

Err http://ppa.launchpad.net precise InRelease                             

Err http://ppa.launchpad.net precise InRelease                             

Err http://ppa.launchpad.net precise InRelease                             

Err http://ppa.launchpad.net precise InRelease                             

Get:2 http://dl.google.com stable Release.gpg [198 B]                      
Err http://ppa.launchpad.net precise Release.gpg                           
  Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net precise Release.gpg
  Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net precise Release.gpg
  Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net precise Release.gpg
  Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net precise Release.gpg
  Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net precise Release.gpg
  Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net precise Release.gpg
  Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net precise Release.gpg
  Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net precise Release.gpg
  Unable to connect to ppa.launchpad.net:http:
Get:3 http://dl.google.com stable Release [1,347 B]
Get:4 http://dl.google.com stable Release [1,347 B]
Get:5 http://dl.google.com stable/main i386 Packages [1,268 B]
Ign http://dl.google.com stable/main TranslationIndex
Get:6 http://dl.google.com stable/main i386 Packages [769 B]
Ign http://dl.google.com stable/main TranslationIndex
Ign http://dl.google.com stable/main Translation-en_US                                                                                 
Ign http://dl.google.com stable/main Translation-en                                                                                    
Ign http://dl.google.com stable/main Translation-en_US                                                                                 
Ign http://dl.google.com stable/main Translation-en                                                                                    
Fetched 5,127 B in 7s (673 B/s)                                                                                                        
Reading package lists... Done
W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-security/InRelease  

W: Failed to fetch http://ppa.launchpad.net/elementary-os/stable/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://ppa.launchpad.net/elementaryart/elementary-dev/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://ppa.launchpad.net/midori/ppa/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://ppa.launchpad.net/ricotz/docky/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://ppa.launchpad.net/yorba/ppa/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise/Release.gpg  Unable to connect to ftp.u-picardie.fr:http:

W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-updates/Release.gpg  Unable to connect to ftp.u-picardie.fr:http:

W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-backports/Release.gpg  Unable to connect to ftp.u-picardie.fr:http:

W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-security/Release.gpg  Unable to connect to ftp.u-picardie.fr:http:

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en_US  Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80]

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en  Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80]

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/Release.gpg  Could not connect to extras.ubuntu.com:80 (91.189.88.33). - connect (111: Connection refused)

W: Failed to fetch http://ppa.launchpad.net/caffeine-developers/ppa/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Failed to fetch http://ppa.launchpad.net/elementary-os/stable/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Failed to fetch http://ppa.launchpad.net/elementaryart/elementary-dev/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Failed to fetch http://ppa.launchpad.net/midori/ppa/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Failed to fetch http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Failed to fetch http://ppa.launchpad.net/ricotz/docky/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Failed to fetch http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Failed to fetch http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Failed to fetch http://ppa.launchpad.net/yorba/ppa/ubuntu/dists/precise/Release.gpg  Unable to connect to ppa.launchpad.net:http:

W: Some index files failed to download. They have been ignored, or old ones used instead.
W: Duplicate sources.list entry http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/ precise/main i386 Packages (/var/lib/apt/lists/ppa.launchpad.net_nemequ_sqlheavy_ubuntu_dists_precise_main_binary-i386_Packages)
W: Duplicate sources.list entry http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/ precise/main i386 Packages (/var/lib/apt/lists/ppa.launchpad.net_sgringwe_beatbox_ubuntu_dists_precise_main_binary-i386_Packages)

Conteúdo de /etc/apt/sources.list:

# deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release i386 (20111012)]/ oneiric main restricted
deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise main restricted #Added by software-properties

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise main restricted
deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise multiverse universe #Added by software-properties

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates main restricted
deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates restricted main multiverse universe #Added by software-properties

## 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://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise universe
deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-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://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise multiverse
deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-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://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-backports main restricted universe multiverse #Added by software-properties

deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security main restricted
deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security restricted main multiverse universe #Added by software-properties
deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security universe
deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security 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 oneiric partner
# deb-src http://archive.canonical.com/ubuntu oneiric partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main

Testando sources.listarquivo alternativo

Estas são as etapas que segui para produzir a seguinte saída:

  1. Faça backup do seu sources.list: sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup

  2. e substitua o conteúdo de /etc/apt/sources.listpelas linhas abaixo e execute apt-get update:

deb http://archive.ubuntu.com/ubuntu/ multiverso do universo restrito principal preciso
deb http://archive.ubuntu.com/ubuntu/ Precision-Updates principal universo restrito multiverso
deb http://archive.ubuntu.com/ubuntu/ precisa-backports principal universo restrito multiverso
deb http://security.ubuntu.com/ubuntu multiverso principal com segurança precisa do multiverso
deb http://archive.canonical.com/ubuntu partner preciso
deb http://extras.ubuntu.com/ubuntu precise principal

Saída:

someone@someone-UBook:~$ sudo apt-get update
Ign http://archive.canonical.com precise InRelease
Hit http://archive.canonical.com precise Release.gpg                           
Hit http://archive.canonical.com precise Release                               
Ign http://archive.ubuntu.com precise InRelease                                
Ign http://extras.ubuntu.com precise InRelease                                 
Ign http://archive.ubuntu.com precise-updates InRelease                        
Hit http://archive.canonical.com precise/partner i386 Packages                 
Hit http://extras.ubuntu.com precise Release.gpg                               
Ign http://archive.ubuntu.com precise-backports InRelease                      
Ign http://archive.canonical.com precise/partner TranslationIndex              
Err http://archive.canonical.com precise/partner Translation-en_US             
  Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80]
Err http://archive.canonical.com precise/partner Translation-en                
  Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80]
Hit http://extras.ubuntu.com precise Release                                   
Get:1 http://archive.ubuntu.com precise Release.gpg [198 B]                    
Ign http://dl.google.com stable InRelease                                      
Err http://dl.google.com stable InRelease                                      

Err http://dl.google.com stable Release.gpg                                    
  Unable to connect to dl.google.com:http: [IP: 173.194.34.38 80]
Err http://dl.google.com stable Release.gpg                                    
  Unable to connect to dl.google.com:http: [IP: 173.194.34.38 80]
Get:2 http://archive.ubuntu.com precise-updates Release.gpg [198 B]            
Hit http://extras.ubuntu.com precise/main i386 Packages                        
Get:3 http://archive.ubuntu.com precise-backports Release.gpg [198 B]          
Ign http://security.ubuntu.com precise-security InRelease                      
Ign http://extras.ubuntu.com precise/main TranslationIndex                     
Err http://extras.ubuntu.com precise/main Translation-en_US                    
  Unable to connect to extras.ubuntu.com:http:
Err http://extras.ubuntu.com precise/main Translation-en                       
  Unable to connect to extras.ubuntu.com:http:
Get:4 http://security.ubuntu.com precise-security Release.gpg [198 B]          
Get:5 http://archive.ubuntu.com precise Release [49.6 kB]                      
Get:6 http://security.ubuntu.com precise-security Release [49.6 kB]            
Get:7 http://archive.ubuntu.com precise-updates Release [49.6 kB]              
Get:8 http://archive.ubuntu.com precise-backports Release [49.6 kB]            
Get:9 http://security.ubuntu.com precise-security/main i386 Packages [32.9 kB] 
Get:10 http://archive.ubuntu.com precise/main i386 Packages [1,274 kB]         
Get:11 http://security.ubuntu.com precise-security/restricted i386 Packages [14 B]
Get:12 http://security.ubuntu.com precise-security/universe i386 Packages [8,594 B]
Get:13 http://security.ubuntu.com precise-security/multiverse i386 Packages [1,393 B]
Get:14 http://security.ubuntu.com precise-security/main TranslationIndex [73 B]
Get:15 http://security.ubuntu.com precise-security/multiverse TranslationIndex [71 B]
Get:16 http://security.ubuntu.com precise-security/restricted TranslationIndex [70 B]
Get:17 http://security.ubuntu.com precise-security/universe TranslationIndex [72 B]
Get:18 http://security.ubuntu.com precise-security/main Translation-en [13.6 kB]
Get:19 http://security.ubuntu.com precise-security/multiverse Translation-en [587 B]
Get:20 http://security.ubuntu.com precise-security/restricted Translation-en [14 B]
Get:21 http://security.ubuntu.com precise-security/universe Translation-en [6,261 B]
Get:22 http://archive.ubuntu.com precise/restricted i386 Packages [8,431 B]    
Get:23 http://archive.ubuntu.com precise/universe i386 Packages [4,796 kB]     
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease
Ign http://ppa.launchpad.net precise InRelease
Ign http://ppa.launchpad.net precise InRelease
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease                                 
Get:24 http://ppa.launchpad.net precise Release.gpg [316 B]                    
Get:25 http://ppa.launchpad.net precise Release.gpg [316 B]                    
Get:26 http://ppa.launchpad.net precise Release.gpg [316 B]                    
Ign http://ppa.launchpad.net precise Release.gpg                               
Get:27 http://ppa.launchpad.net precise Release.gpg [316 B]                    
Hit http://ppa.launchpad.net precise Release.gpg                               
Get:28 http://ppa.launchpad.net precise Release.gpg [316 B]                    
Get:29 http://ppa.launchpad.net precise Release.gpg [316 B]                    
Hit http://ppa.launchpad.net precise Release.gpg                               
Get:30 http://ppa.launchpad.net precise Release.gpg [316 B]                    
Hit http://ppa.launchpad.net precise Release.gpg                               
Get:31 http://ppa.launchpad.net precise Release [11.9 kB]                      
Get:32 http://ppa.launchpad.net precise Release [11.9 kB]                      
Get:33 http://archive.ubuntu.com precise/multiverse i386 Packages [121 kB]     
Get:34 http://ppa.launchpad.net precise Release [11.9 kB]                      
Ign http://ppa.launchpad.net precise Release                                   
Get:35 http://ppa.launchpad.net precise Release [11.9 kB]                      
Hit http://archive.ubuntu.com precise/main TranslationIndex                    
Hit http://archive.ubuntu.com precise/multiverse TranslationIndex              
Hit http://ppa.launchpad.net precise Release                            
Hit http://archive.ubuntu.com precise/restricted TranslationIndex              
Get:36 http://ppa.launchpad.net precise Release [11.9 kB]                      
Hit http://archive.ubuntu.com precise/universe TranslationIndex                
Get:37 http://ppa.launchpad.net precise Release [11.9 kB]                      
Get:38 http://archive.ubuntu.com precise-updates/main i386 Packages [96.5 kB]  
Hit http://ppa.launchpad.net precise Release                                   
Get:39 http://ppa.launchpad.net precise Release [11.9 kB]                      
Get:40 http://archive.ubuntu.com precise-updates/restricted i386 Packages [770 B]
Hit http://ppa.launchpad.net precise Release                                   
Get:41 http://archive.ubuntu.com precise-updates/universe i386 Packages [27.7 kB]
Get:42 http://ppa.launchpad.net precise/main Sources [524 B]                   
Get:43 http://archive.ubuntu.com precise-updates/multiverse i386 Packages [1,393 B]
Get:44 http://ppa.launchpad.net precise/main i386 Packages [507 B]      
Hit http://archive.ubuntu.com precise-updates/main TranslationIndex     
Ign http://ppa.launchpad.net precise/main TranslationIndex              
Hit http://archive.ubuntu.com precise-updates/multiverse TranslationIndex      
Hit http://archive.ubuntu.com precise-updates/restricted TranslationIndex      
Get:45 http://ppa.launchpad.net precise/main Sources [932 B]            
Hit http://archive.ubuntu.com precise-updates/universe TranslationIndex 
Get:46 http://ppa.launchpad.net precise/main i386 Packages [1,017 B]    
Get:47 http://archive.ubuntu.com precise-backports/main i386 Packages [559 B]  
Ign http://ppa.launchpad.net precise/main TranslationIndex              
Get:48 http://archive.ubuntu.com precise-backports/restricted i386 Packages [14 B]
Get:49 http://archive.ubuntu.com precise-backports/universe i386 Packages [1,391 B]
Get:50 http://ppa.launchpad.net precise/main Sources [1,402 B]          
Get:51 http://archive.ubuntu.com precise-backports/multiverse i386 Packages [14 B]
Hit http://archive.ubuntu.com precise-backports/main TranslationIndex   
Get:52 http://ppa.launchpad.net precise/main i386 Packages [1,605 B]    
Hit http://archive.ubuntu.com precise-backports/multiverse TranslationIndex
Ign http://ppa.launchpad.net precise/main TranslationIndex              
Hit http://archive.ubuntu.com precise-backports/restricted TranslationIndex    
Hit http://archive.ubuntu.com precise-backports/universe TranslationIndex      
Hit http://archive.ubuntu.com precise/main Translation-en               
Ign http://ppa.launchpad.net precise/main TranslationIndex              
Hit http://archive.ubuntu.com precise/multiverse Translation-en                
Get:53 http://ppa.launchpad.net precise/main Sources [931 B]                   
Hit http://archive.ubuntu.com precise/restricted Translation-en         
Get:54 http://ppa.launchpad.net precise/main i386 Packages [1,079 B]           
Hit http://archive.ubuntu.com precise/universe Translation-en                  
Ign http://ppa.launchpad.net precise/main TranslationIndex              
Hit http://archive.ubuntu.com precise-updates/main Translation-en              
Hit http://ppa.launchpad.net precise/main Sources                              
Hit http://archive.ubuntu.com precise-updates/multiverse Translation-en 
Hit http://ppa.launchpad.net precise/main i386 Packages                 
Hit http://archive.ubuntu.com precise-updates/restricted Translation-en 
Ign http://ppa.launchpad.net precise/main TranslationIndex              
Hit http://archive.ubuntu.com precise-updates/universe Translation-en          
Get:55 http://ppa.launchpad.net precise/main Sources [3,611 B]                 
Hit http://archive.ubuntu.com precise-backports/main Translation-en            
Get:56 http://ppa.launchpad.net precise/main i386 Packages [2,468 B]    
Hit http://archive.ubuntu.com precise-backports/multiverse Translation-en      
Ign http://ppa.launchpad.net precise/main TranslationIndex              
Hit http://archive.ubuntu.com precise-backports/restricted Translation-en      
Hit http://archive.ubuntu.com precise-backports/universe Translation-en        
Get:57 http://ppa.launchpad.net precise/main Sources [1,524 B]                 
Get:58 http://ppa.launchpad.net precise/main i386 Packages [2,719 B]           
Ign http://ppa.launchpad.net precise/main TranslationIndex                     
Hit http://ppa.launchpad.net precise/main Sources                              
Hit http://ppa.launchpad.net precise/main i386 Packages                        
Ign http://ppa.launchpad.net precise/main TranslationIndex                     
Get:59 http://ppa.launchpad.net precise/main Sources [1,052 B]                 
Get:60 http://ppa.launchpad.net precise/main i386 Packages [1,388 B]           
Ign http://ppa.launchpad.net precise/main TranslationIndex                     
Get:61 http://ppa.launchpad.net precise/main Sources [1,185 B]                 
Get:62 http://ppa.launchpad.net precise/main i386 Packages [1,698 B]           
Ign http://ppa.launchpad.net precise/main TranslationIndex                     
Err http://ppa.launchpad.net precise/main Sources                              
  404  Not Found
Err http://ppa.launchpad.net precise/main i386 Packages                        
  404  Not Found
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Ign http://ppa.launchpad.net precise/main Translation-en_US                    
Ign http://ppa.launchpad.net precise/main Translation-en                       
Fetched 6,699 kB in 15s (445 kB/s)                                             
Reading package lists... Done
W: Failed to fetch http://dl.google.com/linux/talkplugin/deb/dists/stable/InRelease  

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en_US  Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80]

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en  Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80]

W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/sta
apt  updates  software-sources 
— weberc2
fonte
Por favor, cole o conteúdo do seu /etc/apt/sources.listarquivo.
— Ish
@izx atualizou a pergunta em conformidade.
— Weberc2
1
Consegui isso ao executar em uma VM porque não havia falado sobre o servidor proxy corporativo.
— Nigel Thorne

Respostas:

22

Sim, a atualização do servidor de nomes funciona e, se funcionar, você provavelmente atualizou suas configurações de IP para que sejam estáticas e seu servidor não poderá mais resolver URLs.

Experimente o acima e, se funcionar, reinicie. Se falhar após a reinicialização, faça o seguinte:

Edite o arquivo de modelo para o resolv.conf. O servidor Ubuntu reconstrói isso a cada inicialização.

sudo vi /etc/resolvconf/resolv.conf.d/tail

#add just these two lines >>
nameserver 8.8.8.8
nameserver 8.8.4.4

Salve o arquivo e reinicie o serviço:

sudo /etc/init.d/resolvconf restart

8.8.8.8e 8.8.4.4são apenas servidores de nome do Google. Você poderá adicionar seus próprios provedores, se quiser. Se você não gosta vi, use nanoou vim.

Eu descobri lendo este artigo . Então, dê crédito a eles pela dica.

— RichardK
fonte
5
Adicionar opções de servidor de nomes ao /etc/resolvconf/resolv.conf.d/tail não é a solução para nada. Primeiro, quaisquer outros endereços fornecidos para o resolvconf terão precedência. Segundo, a configuração do servidor de nomes geralmente precisa ser dinâmica (dependendo do ambiente de rede e de quais interfaces estão ativas), enquanto o tailarquivo é estático. Além disso, não há indicação de que o problema relatado seja de resolução de nomes.
— Jdthood
6

Acabei de encontrar a resposta aqui . Evidentemente, o apt não pode lidar com muitas fontes de software, por isso pude resolver meu problema desmarcando todas, exceto a que precisava acessar. Seria uma dor real fazer com frequência, mas é melhor que nada. Do site:

Na guia "Outro software", desative todos os repositórios PPA, deixando apenas ativos os repositórios oficiais do Ubuntu. Habilitar muitos repositórios PPA (que não são oficiais) pode causar instabilidade no seu gerenciador de pacotes.

— weberc2
fonte
1
Você pode citar o trecho relevante aqui para referência futura?
— Mahesh
3

Adicione a linha nameserver 8.8.8.8ao seu /etc/resolv.conf.

Isso define servidores DNS alternativos (os servidores DNS públicos executados pelo Google), caso seja um problema de DNS. É semelhante, embora não idêntico, a essa outra resposta (que foi postada mais tarde e fornece um método diferente para essencialmente a mesma reconfiguração).

— ruaan
fonte
8
Não há indicação de que o problema relatado seja de resolução de nomes.
— Jdthood #
2

Isso é causado por alguns pacotes de proxy como anon_proxy, que passa todas as conexões HTTP através de um proxy local usando uma variável de ambiente. Portanto, para alterar essa edição / etc / environment e comente HTTP_PROXY e http_proxy nas duas últimas linhas.

— m.alaa8
fonte
-2

O mesmo problema me trouxe aqui. Estou usando o Ubuntu Server 12.04. Nenhuma das soluções acima resolveu o meu problema, então tentei outras soluções.

Acabei de abrir o sources.list em / etc / apt e descobri que algumas fontes são "restritas".

Apenas edite o sources.list e remova o parâmetro "strict" e ele funciona bem agora :)

Espero que funcione para os outros também!

— RustanTech
fonte
1
A restrictedseção é uma seção oficial nos repositórios do Ubuntu. Não o remova, a menos que você queira realmente executar um software apenas para software livre. Veja askubuntu.com/a/251606/88802 . Não sei por que isso funciona para você - não faz sentido para mim que isso faria alguma diferença.
— gertvdijk
mas como é que meu servidor está atualizando agora? depois de remover esse parâmetro. alguma ideia?
— RustanTech
1
Eu não acho que você teve o mesmo problema. "Não foi possível conectar-se a ..." (como no OP) não tem nenhuma relação com a configuração da seção do repositório .
— precisa saber é o seguinte
Ao utilizar nosso site, você reconhece que leu e compreendeu nossa Política de Cookies e nossa Política de Privacidade.
Licensed under cc by-sa 3.0 with attribution required.