W: Unable to download bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com _ ubuntu_dists_trusty_main_source_Sources, unable to download the application

W: Unable to download bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com _ ubuntu_dists_trusty_main_source_Sources, unable to download the application

1 error description

Youhaidong @ youhaidong :~ $ Cd download
Youhaidong @ youhaidong :~ /Download $ sudo apt-get update
Ignore http://cn.archive.ubuntu.com trusty InRelease
Ignore http://cn.archive.ubuntu.com trusty-updates InRelease
Ignore http://cn.archive.ubuntu.com trusty-backports InRelease
Hit http://cn.archive.ubuntu.com trusty Release. gpg
Hit http://cn.archive.ubuntu.com trusty-updates Release. gpg
Hit http://cn.archive.ubuntu.com trusty-backports Release. gpg
Hit http://cn.archive.ubuntu.com trusty Release
Hit http://cn.archive.ubuntu.com trusty-updates Release
Hit http://cn.archive.ubuntu.com trusty-backports Release
Hit http://cn.archive.ubuntu.com trusty/main Sources
Hit http://cn.archive.ubuntu.com trusty/restricted Sources
Ignore http://extras.ubuntu.com trusty InRelease
Hit http://cn.archive.ubuntu.com trusty/universe Sources
Hit http://cn.archive.ubuntu.com trusty/multiverse Sources
Hit http://cn.archive.ubuntu.com trusty/main amd64 Packages
Hit http://cn.archive.ubuntu.com trusty/restricted amd64 Packages
Hit http://cn.archive.ubuntu.com trusty/universe amd64 Packages
Hit http://cn.archive.ubuntu.com trusty/multiverse amd64 Packages
Hit http://extras.ubuntu.com trusty Release. gpg
Hit http://cn.archive.ubuntu.com trusty/main i386 Packages
Ignore http://security.ubuntu.com trusty-security InRelease
Hit http://cn.archive.ubuntu.com trusty/restricted i386 Packages
Hit http://cn.archive.ubuntu.com trusty/universe i386 Packages
Hit http://cn.archive.ubuntu.com trusty/multiverse i386 Packages
Hit http://cn.archive.ubuntu.com trusty/main Translation-zh_CN
Hit http://extras.ubuntu.com trusty Release
Get: 1 http://extras.ubuntu.com trusty/main Sources [1,064 kB]
Hit http://cn.archive.ubuntu.com trusty/main Translation-en
Hit http://cn.archive.ubuntu.com trusty/multiverse Translation-zh_CN
Hit http://cn.archive.ubuntu.com trusty/multiverse Translation-en
Hit http://cn.archive.ubuntu.com trusty/restricted Translation-zh_CN
Hit http://cn.archive.ubuntu.com trusty/restricted Translation-en
Hit http://cn.archive.ubuntu.com trusty/universe Translation-zh_CN
Hit http://security.ubuntu.com trusty-security Release. gpg
Hit http://cn.archive.ubuntu.com trusty/universe Translation-en
Hit http://cn.archive.ubuntu.com trusty-updates/main Sources
Get: 2 http://extras.ubuntu.com trusty/main i386 Packages [1,348 kB]
Hit http://cn.archive.ubuntu.com trusty-updates/restricted Sources
Hit http://cn.archive.ubuntu.com trusty-updates/universe Sources
Hit http://cn.archive.ubuntu.com trusty-updates/multiverse Sources
Hit http://cn.archive.ubuntu.com trusty-updates/main amd64 Packages
Hit http://security.ubuntu.com trusty-security Release
Hit http://cn.archive.ubuntu.com trusty-updates/restricted amd64 Packages
Hit http://cn.archive.ubuntu.com trusty-updates/universe amd64 Packages
Hit http://cn.archive.ubuntu.com trusty-updates/multiverse amd64 Packages
Hit http://cn.archive.ubuntu.com trusty-updates/main i386 Packages
Hit http://cn.archive.ubuntu.com trusty-updates/restricted i386 Packages
Hit http://cn.archive.ubuntu.com trusty-updates/universe i386 Packages
Hit http://cn.archive.ubuntu.com trusty-updates/multiverse i386 Packages
Hit http://cn.archive.ubuntu.com trusty-updates/main Translation-en
Hit http://cn.archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit http://cn.archive.ubuntu.com trusty-updates/restricted Translation-en
Hit http://cn.archive.ubuntu.com trusty-updates/universe Translation-en
Hit http://cn.archive.ubuntu.com trusty-backports/main Sources
Hit http://cn.archive.ubuntu.com trusty-backports/restricted Sources
Hit http://extras.ubuntu.com trusty/main Translation-en
Hit http://cn.archive.ubuntu.com trusty-backports/universe Sources
Hit http://cn.archive.ubuntu.com trusty-backports/multiverse Sources
Hit http://cn.archive.ubuntu.com trusty-backports/main amd64 Packages
Hitting http://cn.archive.ubuntu.com trusty-backports/restricted amd64 Packages
Hit http://cn.archive.ubuntu.com trusty-backports/universe amd64 Packages
Hit http://security.ubuntu.com trusty-security/main Sources
Hit http://cn.archive.ubuntu.com trusty-backports/multiverse amd64 Packages
Hit http://cn.archive.ubuntu.com trusty-backports/main i386 Packages
Hit http://cn.archive.ubuntu.com trusty-backports/restricted i386 Packages
Hit http://cn.archive.ubuntu.com trusty-backports/universe i386 Packages
Hit http://cn.archive.ubuntu.com trusty-backports/multiverse i386 Packages
Hit http://cn.archive.ubuntu.com trusty-backports/main Translation-en
Hit http://security.ubuntu.com trusty-security/restricted Sources
Hit http://cn.archive.ubuntu.com trusty-backports/multiverse Translation-en
Hit http://cn.archive.ubuntu.com trusty-backports/restricted Translation-en
Hit http://cn.archive.ubuntu.com trusty-backports/universe Translation-en
Hit http://security.ubuntu.com trusty-security/universe Sources
Hit http://security.ubuntu.com trusty-security/multiverse Sources
Hit http://security.ubuntu.com trusty-security/main amd64 Packages
Ignore http://cn.archive.ubuntu.com trusty/main Translation-zh
Ignore http://cn.archive.ubuntu.com trusty/multiverse Translation-zh
Ignore http://cn.archive.ubuntu.com trusty/restricted Translation-zh
Ignore http://cn.archive.ubuntu.com trusty/universe Translation-zh
Hit http://security.ubuntu.com trusty-security/restricted amd64 Packages
Hit http://security.ubuntu.com trusty-security/universe amd64 Packages
Hit http://security.ubuntu.com trusty-security/multiverse amd64 Packages
Ignore http://extras.ubuntu.com trusty/main Translation-zh
Hit http://security.ubuntu.com trusty-security/main i386 Packages
Hit http://security.ubuntu.com trusty-security/restricted i386 Packages
Hit http://security.ubuntu.com trusty-security/universe i386 Packages
Hit http://security.ubuntu.com trusty-security/multiverse i386 Packages
Hit http://security.ubuntu.com trusty-security/main Translation-en
Get: 3 http://extras.ubuntu.com trusty/main amd64 Packages [1,350 kB]
Hit http://security.ubuntu.com trusty-security/multiverse Translation-en
Hit http://security.ubuntu.com trusty-security/restricted Translation-en
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Ignore http://extras.ubuntu.com trusty/main Translation-zh_CN
Download 1,064 kB, which takes 8 seconds (127 kB/s)
W: Unable to download bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com _ ubuntu_dists_trusty_main_source_Sources Hash checksum inconsistent

W: cannot download bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com _ ubuntu_dists_trusty_main_binary-amd64_Packages Hash checksum does not match

W: cannot download bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com _ ubuntu_dists_trusty_main_binary-i386_Packages Hash checksum does not match

E: Some index files failed to download. They have been ignored, or old ones used instead.

2 error cause

3 Solution