无法从ubuntu软件中心下载软件

Question

我正在尝试从ubuntu软件中心下载一个软件，我得到了下面的屏幕。

如果我点击使用这个源，我就会得到

仅此而已，软件没有安装。显然，这种情况发生在Ubuntu软件中心的所有软件中。

sudo apt-get update输出

Err http://in.old-releases.ubuntu.com utopic InRelease
Err http://in.old-releases.ubuntu.com utopic Release.gpg                       
  Could not resolve 'in.old-releases.ubuntu.com'
Ign http://dl.google.com stable InRelease                                      
Hit http://dl.google.com stable Release.gpg                                    
Hit http://dl.google.com stable Release                                        
Ign http://extras.ubuntu.com utopic InRelease                                  
Ign http://archive.ubuntu.com utopic InRelease                                 
Hit http://dl.google.com stable/main i386 Packages                             
Hit http://extras.ubuntu.com utopic Release.gpg                                
Ign http://archive.ubuntu.com utopic Release.gpg                               
Hit http://extras.ubuntu.com utopic Release                                    
Ign http://archive.ubuntu.com utopic Release                                   
Hit http://extras.ubuntu.com utopic/main Sources                               
Ign http://dl.google.com stable/main Translation-en_IN                         
Ign http://dl.google.com stable/main Translation-en                            
Hit http://extras.ubuntu.com utopic/main i386 Packages                         
Ign http://extras.ubuntu.com utopic/main Translation-en_IN                     
Ign http://extras.ubuntu.com utopic/main Translation-en                        
Ign http://ppa.launchpad.net utopic InRelease               
Hit http://ppa.launchpad.net trusty InRelease   
Hit http://ppa.launchpad.net trusty InRelease                            
Get:1 http://ppa.launchpad.net utopic InRelease [15.5 kB]                
Ign http://ppa.launchpad.net utopic InRelease                                  
Hit http://ppa.launchpad.net trusty InRelease                                  
Ign http://ppa.launchpad.net utopic InRelease                                  
Ign http://ppa.launchpad.net trusty InRelease                                  
Hit http://ppa.launchpad.net trusty InRelease                                  
Err http://archive.ubuntu.com utopic/main i386 Packages                        
  404  Not Found [IP: 91.189.91.23 80]
Ign http://ppa.launchpad.net utopic Release.gpg                                
Err http://archive.ubuntu.com utopic/universe i386 Packages                    
  404  Not Found [IP: 91.189.91.23 80]
Ign http://archive.ubuntu.com utopic/main Translation-en_IN                    
Ign http://archive.ubuntu.com utopic/main Translation-en                       
Ign http://archive.ubuntu.com utopic/universe Translation-en_IN                
Get:2 http://ppa.launchpad.net utopic/main i386 Packages [8,542 B]             
Get:3 http://ppa.launchpad.net utopic/main Translation-en [3,070 B]            
Ign http://archive.ubuntu.com utopic/universe Translation-en                   
Hit http://ppa.launchpad.net utopic Release.gpg                                
Hit http://ppa.launchpad.net utopic Release.gpg                                
Hit http://ppa.launchpad.net trusty Release.gpg                                
Ign http://ppa.launchpad.net utopic Release                                    
Hit http://ppa.launchpad.net trusty/main i386 Packages                         
Hit http://ppa.launchpad.net trusty/main Translation-en                        
Hit http://ppa.launchpad.net trusty/main i386 Packages                         
Hit http://ppa.launchpad.net trusty/main Translation-en                        
Hit http://ppa.launchpad.net utopic Release                                    
Hit http://ppa.launchpad.net trusty/main i386 Packages                         
Hit http://ppa.launchpad.net trusty/main Translation-en                        
Hit http://ppa.launchpad.net utopic Release                                    
Hit http://ppa.launchpad.net trusty Release                                    
Hit http://ppa.launchpad.net trusty/main i386 Packages                         
Hit http://ppa.launchpad.net trusty/main Translation-en                        
Hit http://ppa.launchpad.net utopic/main i386 Packages                         
Hit http://ppa.launchpad.net utopic/main Translation-en                        
Hit http://ppa.launchpad.net utopic/main i386 Packages                         
Hit http://ppa.launchpad.net utopic/main Translation-en                        
Hit http://ppa.launchpad.net trusty/main i386 Packages                         
Err http://ppa.launchpad.net utopic/main i386 Packages                         
  404  Not Found
Ign http://ppa.launchpad.net utopic/main Translation-en_IN                     
Ign http://ppa.launchpad.net utopic/main Translation-en                        
Ign http://ppa.launchpad.net trusty/main Translation-en_IN                     
Ign http://ppa.launchpad.net trusty/main Translation-en                        
Fetched 27.1 kB in 21s (1,279 B/s)                                             
Reading package lists... Done
W: Failed to fetch http://in.old-releases.ubuntu.com/ubuntu/dists/utopic/InRelease  
W: Failed to fetch http://in.old-releases.ubuntu.com/ubuntu/dists/utopic/Release.gpg  Could not resolve 'in.old-releases.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic/main/binary-i386/Packages  404  Not Found [IP: 91.189.91.23 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic/universe/binary-i386/Packages  404  Not Found [IP: 91.189.91.23 80]
W: Failed to fetch http://ppa.launchpad.net/inameiname/stable/ubuntu/dists/utopic/main/binary-i386/Packages  404  Not Found
W: Some index files failed to download. They have been ignored, or old ones used instead.

cat /etc/*release输出

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.10
DISTRIB_CODENAME=utopic
DISTRIB_DESCRIPTION="Ubuntu 14.10"
NAME="Ubuntu"
VERSION="14.10 (Utopic Unicorn)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.10"
VERSION_ID="14.10"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"

Answer 1

如您所见，您的版本是EOL (终结生命)。经过我们的讨论，在chat中，已经确定您将下载14.04并安装，保留/home分区。要下载14.04，请单击这里。

Answer 2

实际上我找到了解决我的问题的方法。我使用的Ubuntu14.10达到了它的EOL，所以我不得不升级我的Ubuntu来安装任何软件。

还有一种替代方法，而不是升级操作系统，只需按照这个链接https://superuser.com/a/339572中的说明编辑sources.list文件即可。从那以后，我就可以从ubuntu软件中心安装任何软件了。