sudo apt-get installを使用する場合 パッケージをインストールすると、次のエラーが発生します:(この例はGnome拡張機能のインストール中です）
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libdbusmenu-qt2:i386 libatk1.0-0:i386 libxcomposite1:i386 ruby-text-format
ruby-activesupport-2.3 libwrap0:i386 nspluginwrapper libsamplerate0:i386
libi18n-ruby libbuilder-ruby rake libjack-jackd2-0:i386 libnspr4-0d:i386
libcairo2:i386 libjs-prototype libmemcache-client-ruby1.8
ruby-actionmailer-2.3 sni-qt:i386 libmemcache-client-ruby
ruby-activerecord-2.3 ruby-rchardet libdatrie1:i386 libjson0:i386
libyaml-0-2 libgdk-pixbuf2.0-0:i386 libpixman-1-0:i386 ruby-tmail
libjs-scriptaculous libxinerama1:i386 nspluginviewer:i386 libxft2:i386
libbuilder-ruby1.8 libspeexdsp1:i386 libthai0:i386 libasound2:i386
libflac8:i386 librack-ruby libtzinfo-ruby1.8 libvorbisenc2:i386
ruby-rails-2.3 libasyncns0:i386 libjasper1:i386 librack-ruby1.8
ruby-activeresource-2.3 libtzinfo-ruby libruby1.9.1 libpango1.0-0:i386
libpulse0:i386 libxcb-render0:i386 libvorbis0a:i386 libxcursor1:i386
libxcb-shm0:i386 libxv1:i386 libi18n-ruby1.8 ruby-actionpack-2.3
libxrandr2:i386 libnss3-1d:i386 libsndfile1:i386 libgtk2.0-0:i386
libasound2-plugins:i386 libogg0:i386
Use 'apt-get autoremove' to remove them.
The following NEW packages will be installed:
gnome-shell-extensions-windows-navigator
0 upgraded, 1 newly installed, 0 to remove and 2 not upgraded.
4 not fully installed or removed.
Need to get 7,290 B of archives.
After this operation, 73.7 kB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/ferramroberto/gnome3/ubuntu/ oneiric/main gnome-shell-extensions-windows-navigator all 3.2.0-1~lffl~oneiric~ppa [7,290 B]
Fetched 7,290 B in 0s (15.1 kB/s)
Selecting previously deselected package gnome-shell-extensions-windows-navigator.
(Reading database ... 267839 files and directories currently installed.)
Unpacking gnome-shell-extensions-windows-navigator (from .../gnome-shell-extensions-windows-navigator_3.2.0-1~lffl~oneiric~ppa_all.deb) ...
Setting up plymouth-theme-lmint (0.5.0-1) ...
update-alternatives: error: alternative path /lib/plymouth/themes/Lmint/Lmint.plymouth doesn't exist.
dpkg: error processing plymouth-theme-lmint (--configure):
subprocess installed post-installation script returned error exit status 2
Setting up plymouth-theme-mib-oxygen (0.5.0-1) ...
update-alternatives: error: alternative path /lib/plymouth/themes/MIBOxygen/MIBOxygen.plymouth doesn't exist.
dpkg: error processing plymouth-theme-mib-oxygen (--configure):
subprocess installed post-installation script returned error exit status 2
Setting up plymouth-theme-mib-ubuntu (0.5.0-2) ...
update-alternatives: error: alternative path /lib/plymouth/themes/MIB-Ubuntu/MIB-Ubuntu.plymouth doesn't exist.
dpkg: error processing plymouth-theme-mib-ubuntu (--configure):
subprocess installed post-installation script returned error exit status 2
Setting up plymouth-theme-spinfinity-ubuntu-women (0.5.0-2) ...
update-alternatives: error: alternative path /lib/plymouth/themes/plymouth-theme-spinfinity-ubuntu-women/spinfinity-ubuntu-women.plymouth doesn't exist.
dpkg: error processing plymouth-theme-spinfinity-ubuntu-women (--configure):
subprocess installed post-installation script returned error exit status 2
Setting up gnome-shell-extensions-windows-navigator (3.2.0-1~lffl~oneiric~ppa) ...
No apport report written because MaxReports is reached already
Errors were encountered while processing:
plymouth-theme-lmint
plymouth-theme-mib-oxygen
plymouth-theme-mib-ubuntu
plymouth-theme-spinfinity-ubuntu-women
E: Sub-process /usr/bin/dpkg returned an error code (1)**
また、Ubuntu Software Centerからのインストールで、インストールが失敗したにもかかわらず、パッケージがインストール済みとして表示されるというエラーが発生します。
エラーはplymouth-mangerのインストールが原因だと思います スプラッシュ画面のテーマを管理します。
この厄介なエラーを取り除くための助けをいただければ幸いです！
関連：UbuntuのUbuntuで壊れたパッケージを削除する方法は？承認された回答：
ターミナルでこれを実行して、キャッシュをクリーンアップし、不要なパッケージを削除します：
sudo apt-get clean && sudo apt-get autoremove
残りを修正します
sudo apt-get -f install
最後に他のすべてを構成します
sudo dpkg --configure -a