Ubuntu apt get无法获取包

我使用ubuntu 14.04。直到最近，我才开始好好工作。使用apt get update时，apt get将返回失败消息：

    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/Release.gpg  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/Release.gpg  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/Release.gpg  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/Release.gpg  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/main/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/restricted/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/universe/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/multiverse/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/main/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/restricted/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/universe/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/multiverse/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/main/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/restricted/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/universe/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/multiverse/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/main/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/main/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/multiverse/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/multiverse/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/restricted/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/restricted/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/universe/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty/universe/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/main/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/restricted/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/universe/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/multiverse/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/main/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/restricted/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/universe/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/multiverse/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/main/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/restricted/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/universe/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/multiverse/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/main/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/main/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/multiverse/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/multiverse/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/restricted/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/restricted/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/universe/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-updates/universe/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/main/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/restricted/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/universe/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/multiverse/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/main/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/restricted/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/universe/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/multiverse/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/main/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/restricted/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/universe/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/multiverse/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/main/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/main/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/multiverse/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/multiverse/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/restricted/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/restricted/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/universe/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-backports/universe/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/main/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/restricted/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/universe/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/multiverse/source/Sources  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/main/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/restricted/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/universe/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/multiverse/binary-amd64/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/main/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/restricted/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/universe/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/multiverse/binary-i386/Packages  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/main/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/main/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/multiverse/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/multiverse/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/restricted/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/restricted/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/universe/i18n/Translation-en_US  Connection failed [IP: 115.28.122.210 80]
    Failed to fetch http://mirrors.aliyun.com/ubuntu/dists/trusty-security/universe/i18n/Translation-en  Connection failed [IP: 115.28.122.210 80]
    Some index files failed to download. They have been ignored, or old ones used instead.

我试图将源代码更改为mirrors.163.com或主服务器。它仍然失败了。 Ping这些服务器表明连接正常：

    $ ping mirrors.aliyun.com
    PING mirrors.aliyun.com (112.124.140.210) 56(84) bytes of data.
    64 bytes from 112.124.140.210: icmp_seq=1 ttl=54 time=12.5 ms
    64 bytes from 112.124.140.210: icmp_seq=2 ttl=54 time=12.2 ms
    64 bytes from 112.124.140.210: icmp_seq=3 ttl=54 time=13.5 ms

---

有人知道如何解决这个问题吗？谢谢

我以前遇到过一次，但我通过简单地重新启动我的系统解决了这个问题，请尝试重新启动您的系统

我仍然可以安装。但更新总是失败。已尝试重新启动。不幸的是，此方法不适用于我：-(