我一直在尝试升级我的 ubuntu 11.04 台式计算机，但是当我单击升级按钮时：
我收到此错误：
我试图改变我的存储库，但它没有改变错误（（关于“设置新的软件频道”）。
有人能给我指明正确的方向吗？
这是我的来源列表：
# deb http://ppa.launchpad.net/ailurus/ppa/ubuntu karmic main # disabled on upgrade to karmic
# deb-src http://ppa.launchpad.net/ailurus/ppa/ubuntu karmic main # disabled on upgrade to karmic
# deb cdrom:[Ubuntu 9.04 _Jaunty Jackalope_ - Release i386 (20090421.3)]/ jaunty main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us.archive.ubuntu.com/ubuntu/ natty main restricted multiverse universe
## Major bug fix updates produced after the final release of the
## distribution. deb http://us.archive.ubuntu.com/ubuntu/ natty-updates main restricted multiverse universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team. deb-src http://pt.archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users. deb http://archive.canonical.com/ubuntu natty partner deb-src http://archive.canonical.com/ubuntu natty partner
deb http://us.archive.ubuntu.com/ubuntu/ natty-security main restricted multiverse universe deb http://us.archive.ubuntu.com/ubuntu/ natty-proposed restricted main multiverse universe
# deb http://deb.torproject.org/torproject.org karmic main # disabled on upgrade to maverick
# deb-src http://deb.torproject.org/torproject.org karmic main # disabled on upgrade to maverick deb http://extras.ubuntu.com/ubuntu natty main #Third party developers repository
答案1
您需要jaunty从源列表或源列表.d/* 中删除所有相关存储库。
我直接跳到 jaunty 的原因是，在您的屏幕截图中，失败的档案jau以发行版名称开头。
它可能正在查找内容deb-src http://pt.archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse，或者您的 sources.list.d 中可能还有其他内容。
你可以用文本编辑器编辑 /etc/sources.list.d，例如这。如果您要编辑它，请先复制一份。就像那个答案所说的那样，您需要非常小心地编辑系统配置文件。
答案2
检查是否可以 ping pt.archive.ubuntu.com，如果不行的话...尝试修改你的
/etc/apt/sources.list
删除“pt”的引用并保留“archive.ubuntu.com”。这将影响新安装和更新的下载速度，但可能会解决问题。