W: Unable to download bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com_ubuntu_dists_trusty_main_source_sources

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
Hit 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, time consuming 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 mismatch

W: Unable to download bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com_ubuntu_dists_trusty_main_binary-amd64_packages Hash Checksum mismatch

W: Unable to download bzip2:/var/lib/apt/lists/partial/extras.ubuntu.com_ubuntu_dists_trusty_main_binary-i386_packages Hash Checksum mismatch

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

2 Error Reason

3 Solutions