我正在运行 14.04LTS。Apt-get 开始抛出有关未满足依赖项的错误。我进行了大量故障排除，但所有常见解决方案（例如sudo apt-get install -f和）均sudo dpkg -a --config不起作用。
像往常一样，我运行sudo apt-get update它，这似乎有效。
我无法安装依赖项或安装 aptitude，因为任何使用 apt-get 的操作都会返回以下错误：
$ sudo apt-get install aptitude
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
aptitude : Depends: libboost-iostreams1.46.1 (>= 1.46.1-1) but it is not going to be installed
Depends: libcwidget3 but it is not going to be installed
Recommends: libparse-debianchangelog-perl but it is not going to be installed
libgl1-mesa-glx-lts-trusty : Depends: libglapi-mesa-lts-trusty (= 10.1.3-0ubuntu0.2~precise2) but it is not going to be installed
Recommends: libgl1-mesa-dri-lts-trusty (>= 7.2) but it is not going to be installed
xserver-xorg-video-vmware-lts-trusty : Depends: libxatracker2-lts-trusty but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
然后修复就不起作用了：
$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
xserver-xorg-video-fbdev-lts-trusty libwayland-ltst-client0 xserver-xorg-video-neomagic-lts-trusty xserver-xorg-video-openchrome-lts-trusty xserver-xorg-video-sis-lts-trusty xserver-xorg-video-savage-lts-trusty
xserver-xorg-video-intel-lts-trusty xserver-xorg-video-siliconmotion-lts-trusty xserver-xorg-video-vmware-lts-trusty libmtdev1 xserver-xorg-video-modesetting-lts-trusty xserver-xorg-video-r128-lts-trusty
xserver-xorg-video-nouveau-lts-trusty libglamor-ltst0 libxrandr-ltst2 libwayland-ltst-server0 xserver-xorg-video-cirrus-lts-trusty xserver-xorg-video-mach64-lts-trusty xserver-xorg-video-s3-lts-trusty
xserver-xorg-video-vesa-lts-trusty libxcb-xfixes0 xserver-xorg-video-tdfx-lts-trusty xserver-xorg-video-sisusb-lts-trusty xserver-xorg-video-radeon-lts-trusty xserver-xorg-video-trident-lts-trusty xserver-xorg-video-mga-lts-trusty
libxatracker2-lts-trusty
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
libgl1-mesa-dri-lts-trusty libglapi-mesa-lts-trusty libxatracker2-lts-trusty
Suggested packages:
libglide3
The following NEW packages will be installed:
libgl1-mesa-dri-lts-trusty libglapi-mesa-lts-trusty libxatracker2-lts-trusty
0 upgraded, 3 newly installed, 0 to remove and 28 not upgraded.
Need to get 0 B/5,192 kB of archives.
After this operation, 34.3 MB of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 945234 files and directories currently installed.)
Unpacking libgl1-mesa-dri-lts-trusty (from .../libgl1-mesa-dri-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb) ...
xz: /usr/lib/x86_64-linux-gnu/liblzma.so.5: version `XZ_5.2' not found (required by xz)
dpkg-deb (subprocess): subprocess data returned error exit status 1
dpkg-deb: error: subprocess <decompress> returned error exit status 2
No apport report written because the error message indicates an issue on the local system
dpkg: error processing /var/cache/apt/archives/libgl1-mesa-dri-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb (--unpack):
subprocess dpkg-deb --fsys-tarfile returned error exit status 2
Unpacking libglapi-mesa-lts-trusty (from .../libglapi-mesa-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb) ...
xz: /usr/lib/x86_64-linux-gnu/liblzma.so.5: version `XZ_5.2' not found (required by xz)
dpkg-deb (subprocess): subprocess data returned error exit status 1
dpkg-deb: error: subprocess <decompress> returned error exit status 2
dpkg: error processing /var/cache/apt/archives/libglapi-mesa-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb (--unpack):
subprocess dpkg-deb --fsys-tarfile returned error exit status 2
No apport report written because the error message indicates an issue on the local system
Unpacking libxatracker2-lts-trusty (from .../libxatracker2-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb) ...
xz: /usr/lib/x86_64-linux-gnu/liblzma.so.5: version `XZ_5.2' not found (required by xz)
dpkg-deb (subprocess): subprocess data returned error exit status 1
dpkg-deb: error: subprocess <decompress> returned error exit status 2
No apport report written because the error message indicates an issue on the local system
dpkg: error processing /var/cache/apt/archives/libxatracker2-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb (--unpack):
subprocess dpkg-deb --fsys-tarfile returned error exit status 2
Errors were encountered while processing:
/var/cache/apt/archives/libgl1-mesa-dri-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb
/var/cache/apt/archives/libglapi-mesa-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb
/var/cache/apt/archives/libxatracker2-lts-trusty_10.1.3-0ubuntu0.2~precise2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
$ sudo dpkg -a --configure
$
我发现有一个错误：
xz: /usr/lib/x86_64-linux-gnu/liblzma.so.5: version `XZ_5.2' not found (required by xz)
但当我搜索它时：
$ sudo find / -name liblzma.so.5
/usr/lib/x86_64-linux-gnu/liblzma.so.5
/home/dacotah/anaconda2/lib/liblzma.so.5
/home/dacotah/anaconda2/pkgs/xz-5.2.2-0/lib/liblzma.so.5
/home/dacotah/.conda/envs/outrigger-env/lib/liblzma.so.5
有什么建议吗？
答案1
尝试手动安装软件包。
- 打开https://packages.ubuntu.com/在您的网络浏览器中。
- 向下滚动到搜索包目录区域。
- 从分发下拉菜单中选择您的 Ubuntu 版本（在本例中为
trusty）。 - 输入包名称并单击搜索（本例中为 libcwidget3）
- 单击“精确匹配”（本例中为软件包 libcwidget3）
- 在页面底部的表格中选择您的计算机架构。（
amd64适用于 64 位计算机，i386适用于 32 位计算机） - 选择页面上的其中一个链接。选择适合您所在国家/地区的链接可能是一个好主意，但这并不重要。
- 打开终端并导航到您下载包的目录。
- 运行 sudo dpkg -i file.deb，其中 file.deb 是您刚刚下载的文件。
对 重复以下步骤libglapi-mesa-lts-trusty，但不是trusty在下拉菜单中选择 ，而是选择trusty-updates。