apt-get“无法连接”错误?

我最近安装了12.04,但无法运行sudo apt-get update ,因此sudo apt-get install xxx 。 当我运行第一个命令时,我会得到几个

 Ign http://extras.ubuntu.com precise InRelease 

 Err http://extras.ubuntu.com precise release.gpg Unable to connect to extras.ubuntu.com 

它可以正常工作,以获得wget extras.ubuntu.com

我的/etc/apt/sources.list是瑞典镜像se.archive.ubuntu.com/ubuntu的原始文件。 为了它的价值,我尝试了其他具有相同结果的镜像。 我的sources.list可以在这里找到。

更新

我知道有很多像这样的问题,但没有人帮助过我。 我执行了以下命令,但结果没有变化。

 sudo mv /etc/apt/sources.list /etc/apt/sources.list.backup sudo vi /etc/apt/sources.list 

并粘贴

 ################### OFFICIAL UBUNTU REPOS ################### ###### Ubuntu Main Repos deb http://se.archive.ubuntu.com/ubuntu/ precise main deb-src http://se.archive.ubuntu.com/ubuntu/ precise main ###### Ubuntu Update Repos deb http://se.archive.ubuntu.com/ubuntu/ precise-security main deb http://se.archive.ubuntu.com/ubuntu/ precise-updates main deb http://se.archive.ubuntu.com/ubuntu/ precise-proposed main deb http://se.archive.ubuntu.com/ubuntu/ precise-backports main deb-src http://se.archive.ubuntu.com/ubuntu/ precise-security main deb-src http://se.archive.ubuntu.com/ubuntu/ precise-updates main deb-src http://se.archive.ubuntu.com/ubuntu/ precise-proposed main deb-src http://se.archive.ubuntu.com/ubuntu/ precise-backports main 

输出来自wget -S --spider http://extras.ubuntu.com

 Spider mode enabled. Check if remote file exists. --2012-07-16 14:06:21-- http://extras.ubuntu.com/ Resolving ... Connecting to ... connected. Proxy request sent, awaiting response... HTTP/1.1 200 OK Date: Mon, 16 Jul 2012 10:05:19 GMT Server: Apache/2.2.8 (Ubuntu) Content-Type: text/html;charset=UTF-8 Connection: close Length: unspecified [text/html] Remote file exists and could contain further links, but recursion is disabled -- not retrieving. 

apt-config dump输出

 APT ""; APT::Architecture "i386"; APT::Build-Essential ""; APT::Build-Essential:: "build-essential"; APT::Install-Recommends "1"; APT::Install-Suggests "0"; APT::Authentication ""; APT::Authentication::TrustCDROM "true"; APT::NeverAutoRemove ""; APT::NeverAutoRemove:: "^firmware-linux.*"; APT::NeverAutoRemove:: "^linux-firmware$"; APT::NeverAutoRemove:: "^linux-image.*"; APT::NeverAutoRemove:: "^kfreebsd-image.*"; APT::NeverAutoRemove:: "^linux-restricted-modules.*"; APT::NeverAutoRemove:: "^linux-ubuntu-modules-.*"; APT::NeverAutoRemove:: "^gnumach$"; APT::NeverAutoRemove:: "^gnumach-image.*"; APT::Never-MarkAuto-Sections ""; APT::Never-MarkAuto-Sections:: "metapackages"; APT::Never-MarkAuto-Sections:: "restricted/metapackages"; APT::Never-MarkAuto-Sections:: "universe/metapackages"; APT::Never-MarkAuto-Sections:: "multiverse/metapackages"; APT::Never-MarkAuto-Sections:: "oldlibs"; APT::Never-MarkAuto-Sections:: "restricted/oldlibs"; APT::Never-MarkAuto-Sections:: "universe/oldlibs"; APT::Never-MarkAuto-Sections:: "multiverse/oldlibs"; APT::Periodic ""; APT::Periodic::Update-Package-Lists "1"; APT::Periodic::Download-Upgradeable-Packages "0"; APT::Periodic::AutocleanInterval "0"; APT::Update ""; APT::Update::Post-Invoke-Success ""; APT::Update::Post-Invoke-Success:: "touch /var/lib/apt/periodic/update-success-stamp 2>/dev/null || true"; APT::Update::Post-Invoke-Success:: "[ ! -f /var/run/dbus/system_bus_socket ] || /usr/bin/dbus-send --system --dest=org.debian.apt --type=signal /org/debian/apt org.debian.apt.CacheChanged || true"; APT::Archives ""; APT::Archives::MaxAge "30"; APT::Archives::MinAge "2"; APT::Archives::MaxSize "500"; APT::Changelogs ""; APT::Changelogs::Server "http://changelogs.ubuntu.com/changelogs"; APT::Architectures ""; APT::Architectures:: "i386"; APT::Compressor ""; APT::Compressor::. ""; APT::Compressor::.::Name "."; APT::Compressor::.::Extension ""; APT::Compressor::.::Binary ""; APT::Compressor::.::Cost "1"; APT::Compressor::.::CompressArg ""; APT::Compressor::.::CompressArg:: ""; APT::Compressor::.::UncompressArg ""; APT::Compressor::.::UncompressArg:: ""; APT::Compressor::gzip ""; APT::Compressor::gzip::Name "gzip"; APT::Compressor::gzip::Extension ".gz"; APT::Compressor::gzip::Binary "gzip"; APT::Compressor::gzip::Cost "2"; APT::Compressor::gzip::CompressArg ""; APT::Compressor::gzip::CompressArg:: "-9n"; APT::Compressor::gzip::UncompressArg ""; APT::Compressor::gzip::UncompressArg:: "-d"; APT::Compressor::bzip2 ""; APT::Compressor::bzip2::Name "bzip2"; APT::Compressor::bzip2::Extension ".bz2"; APT::Compressor::bzip2::Binary "bzip2"; APT::Compressor::bzip2::Cost "3"; APT::Compressor::bzip2::CompressArg ""; APT::Compressor::bzip2::CompressArg:: "-9"; APT::Compressor::bzip2::UncompressArg ""; APT::Compressor::bzip2::UncompressArg:: "-d"; APT::Compressor::lzma ""; APT::Compressor::lzma::Name "lzma"; APT::Compressor::lzma::Extension ".lzma"; APT::Compressor::lzma::Binary "lzma"; APT::Compressor::lzma::Cost "4"; APT::Compressor::lzma::CompressArg ""; APT::Compressor::lzma::CompressArg:: "-9"; APT::Compressor::lzma::UncompressArg ""; APT::Compressor::lzma::UncompressArg:: "-d"; APT::Compressor::xz ""; APT::Compressor::xz::Name "xz"; APT::Compressor::xz::Extension ".xz"; APT::Compressor::xz::Binary "xz"; APT::Compressor::xz::Cost "5"; APT::Compressor::xz::CompressArg ""; APT::Compressor::xz::CompressArg:: "-6"; APT::Compressor::xz::UncompressArg ""; APT::Compressor::xz::UncompressArg:: "-d"; Dir "/"; Dir::State "var/lib/apt/"; Dir::State::lists "lists/"; Dir::State::cdroms "cdroms.list"; Dir::State::mirrors "mirrors/"; Dir::State::extended_states "extended_states"; Dir::State::status "/var/lib/dpkg/status"; Dir::Cache "var/cache/apt/"; Dir::Cache::archives "archives/"; Dir::Cache::srcpkgcache "srcpkgcache.bin"; Dir::Cache::pkgcache "pkgcache.bin"; Dir::Etc "etc/apt/"; Dir::Etc::sourcelist "sources.list"; Dir::Etc::sourceparts "sources.list.d"; Dir::Etc::vendorlist "vendors.list"; Dir::Etc::vendorparts "vendors.list.d"; Dir::Etc::main "apt.conf"; Dir::Etc::netrc "auth.conf"; Dir::Etc::parts "apt.conf.d"; Dir::Etc::preferences "preferences"; Dir::Etc::preferencesparts "preferences.d"; Dir::Etc::trusted "trusted.gpg"; Dir::Etc::trustedparts "trusted.gpg.d"; Dir::Bin ""; Dir::Bin::methods "/usr/lib/apt/methods"; Dir::Bin::solvers ""; Dir::Bin::solvers:: "/usr/lib/apt/solvers"; Dir::Bin::dpkg "/usr/bin/dpkg"; Dir::Bin::lzma "/usr/bin/lzma"; Dir::Bin::xz "/usr/bin/xz"; Dir::Bin::bzip2 "/bin/bzip2"; Dir::Media ""; Dir::Media::MountPath "/media/apt"; Dir::Log "var/log/apt"; Dir::Log::Terminal "term.log"; Dir::Log::History "history.log"; Dir::Ignore-Files-Silently ""; Dir::Ignore-Files-Silently:: "~$"; Dir::Ignore-Files-Silently:: "\.disabled$"; Dir::Ignore-Files-Silently:: "\.bak$"; Dir::Ignore-Files-Silently:: "\.dpkg-[az]+$"; Dir::Ignore-Files-Silently:: "\.save$"; Dir::Ignore-Files-Silently:: "\.orig$"; Dir::Ignore-Files-Silently:: "\.distUpgrade$"; Acquire ""; Acquire::cdrom ""; Acquire::cdrom::mount "/media/cdrom/"; Acquire::Languages ""; Acquire::Languages:: "en_US"; Acquire::Languages:: "en"; Acquire::Languages:: "none"; Aptitude ""; Aptitude::Get-Root-Command "sudo:/usr/bin/sudo"; Unattended-Upgrade ""; Unattended-Upgrade::Allowed-Origins ""; Unattended-Upgrade::Allowed-Origins:: "${distro_id}:${distro_codename}-security"; DPkg ""; DPkg::Pre-Install-Pkgs ""; DPkg::Pre-Install-Pkgs:: "/usr/sbin/dpkg-preconfigure --apt || true"; DPkg::Post-Invoke ""; DPkg::Post-Invoke:: "if [ -d /var/lib/update-notifier ]; then touch /var/lib/update-notifier/dpkg-run-stamp; fi; if [ -e /var/lib/update-notifier/updates-available ]; then echo > /var/lib/update-notifier/updates-available; fi "; CommandLine ""; CommandLine::AsString "apt-config dump"; 

apt-get不遵守您的系统范围的代理设置。

  • /etc/apt/apt.conf.d/创建一个名为95proxies/etc/apt/apt.conf.d/ ,并包含以下内容:

    获取:: http :: proxy“http://www-proxy.ericsson.se:8080/”;
    获取:: ftp :: proxy“ftp://www-proxy.ericsson.se:8080/”;
    获取:: https :: proxy“https://www-proxy.ericsson.se:8080/”;
    

最后,注销并重新启动以确保更改生效。

这应该有希望修复你的apt-get“无法连接”问题。