从Ubuntu 11.10（Oneiric Ocelot）升级到12.04LTS（精确的穿山甲）后，弹出一个窗口，说升级失败，我应该运行sudo dpkg --configure -a。
运行该命令给了我：
sudo dpkg --configure -a
dpkg: error: parsing file '/var/lib/dpkg/status' near line 55497 package 'indicator-displex':
blank line in value of field 'Description
尝试运行apt-get install -f会给我带来很多依赖错误以及相同的dpkg错误。
Answers:
查看错误/var/lib/dpkg/status在行55497上提到的文件后，我看到了：
Package: indicator-displex
Priority: optional
Section: GTK, system, admin
Installed-Size: 1524
Maintainer: Arick McNiel <arickmcniel AT yahoo DOT com>
Architecture: all
Version: 0.1
Depends: python, python-gtk2, python-central (>= 0.6.1), python-notify, python-appindicator, compiz
Size: 130748
Description: DisPlex
AppIndicator to interface with Compiz / Xrandr / Emerald.
.
The Displex (indicator-displex) application provides an AppIndicator to the display
interfaces of Compiz / Emerald / and Gnome Display Manager. In doing so, it hopes
to provide a product that is helpful for those applications without an AppIndicator
interface AND to minimize icons by combinine some functionality of the
gnome-display-manger AppIndicator icon.
DisPlex has the following features:
-Uses the new Ubuntu AppIndicator interface
-Provides interface for: COMPIZ, EMERALD, GNOME Display Properties
-Enables you to change decorators from the AppIndicator Tray
-Enables you to activate / deactivate Compiz Effects
-Enables you to switch window manager
-Provides the ability to hide/show desktop icons
Homepage: https://launchpad.net/displex; http://sourceforge.net/projects/displex/
我对此文件进行了备份，然后在文本编辑器中将其打开。（sudo vi /var/lib/dpkg/status，然后:55497转到该行。）
.在“ DisPlex具有以下功能：”之前在空白行中添加单行可解决此问题。
（如果不熟悉vi ...这是一个提示：A添加一行，添加一个空格和句点ESC以退出插入模式，然后:wq编写并退出）
然后我就可以跑步了sudo dpkg --configure -a。运行后sudo apt-get -f install，我看到了该文件的类似错误/var/lib/dpkg/available。我.在错误中提到的这一行上向该文件添加了一个，现在它可以正常工作了。
我遇到了最后一个与该错误相同的问题。
Unpacking libatk-adaptor-schemas (from .../libatk-adaptor-schemas_2.4.0-1ubuntu2_amd64.deb) ...
dpkg: error processing /var/cache/apt/archives/libatk-adaptor-schemas_2.4.0-1ubuntu2_amd64.deb (--unpack):
trying to overwrite '/usr/share/glib-2.0/schemas/org.a11y.atspi.gschema.xml', which is also in package libatk-adaptor 2.2.1-0ubuntu1
ErrorMessage: trying to overwrite '/usr/share/glib-2.0/schemas/org.a11y.atspi.gschema.xml', which is also in package libatk-adaptor 2.2.1-0ubuntu1
要解决此问题：
sudo apt-get update
sudo apt-get dist-upgrade
sudoedit，而不是sudo vi，反正，vim而不是vi（如果可用）
您也可以尝试运行：
sudo fuser -vki /var/lib/dpkg/lock
sudo dpkg --configure -a
这对我有用。它杀死了锁定dpkg的进程。