现在，顶部的状态条上有一个类似交通标志：禁行的标志，运行：sudo apt-get -f install后有如下提示：
debconf: Perl may be unconfigured (Can't locate loadable object for module IO in @INC (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.20.2 /usr/local/share/perl/5.20.2 /usr/lib/x86_64-linux-gnu/perl5/5.20 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.20 /usr/share/perl/5.20 /usr/local/lib/site_perl .) at /usr/lib/x86_64-linux-gnu/perl/5.20/IO/Handle.pm line 9.
Compilation failed in require at /usr/lib/x86_64-linux-gnu/perl/5.20/IO/Handle.pm line 9.
BEGIN failed--compilation aborted at /usr/lib/x86_64-linux-gnu/perl/5.20/IO/Handle.pm line 9.
Compilation failed in require at /usr/lib/x86_64-linux-gnu/perl/5.20/IO/Seekable.pm line 9.
BEGIN failed--compilation aborted at /usr/lib/x86_64-linux-gnu/perl/5.20/IO/Seekable.pm line 9.
Compilation failed in require at /usr/lib/x86_64-linux-gnu/perl/5.20/IO/File.pm line 11.
BEGIN failed--compilation aborted at /usr/lib/x86_64-linux-gnu/perl/5.20/IO/File.pm line 11.
Compilation failed in require at /usr/share/perl/5.20/FileHandle.pm line 9.
Compilation failed in require at (eval 1) line 3.
BEGIN failed--compilation aborted at (eval 1) line 3.
) -- aborting
dpkg: warning: files list file for package 'git' missing; assuming package has no files currently installed
(Reading database ... 272988 files and directories currently installed.)
Preparing to unpack .../linux-image-4.2.0-23-generic_4.2.0-23.28_amd64.deb ...
Can't locate loadable object for module POSIX in @INC (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.20.2 /usr/local/share/perl/5.20.2 /usr/lib/x86_64-linux-gnu/perl5/5.20 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.20 /usr/share/perl/5.20 /usr/local/lib/site_perl .) at /usr/share/perl5/Debconf/Template.pm line 7.
Compilation failed in require at /usr/share/perl5/Debconf/Template.pm line 7.
BEGIN failed--compilation aborted at /usr/share/perl5/Debconf/Template.pm line 7.
Compilation failed in require at /usr/share/perl5/Debconf/Question.pm line 8.
BEGIN failed--compilation aborted at /usr/share/perl5/Debconf/Question.pm line 8.
Compilation failed in require at /usr/share/perl5/Debconf/Config.pm line 7.
BEGIN failed--compilation aborted at /usr/share/perl5/Debconf/Config.pm line 7.
Compilation failed in require at /usr/share/perl5/Debconf/Log.pm line 10.
Compilation failed in require at /usr/share/perl5/Debconf/Db.pm line 7.
BEGIN failed--compilation aborted at /usr/share/perl5/Debconf/Db.pm line 7.
Compilation failed in require at /usr/share/debconf/frontend line 6.
BEGIN failed--compilation aborted at /usr/share/debconf/frontend line 6.
dpkg: error processing archive /var/cache/apt/archives/linux-image-4.2.0-23-generic_4.2.0-23.28_amd64.deb (--unpack):
subprocess new pre-installation script returned error exit status 255
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.2.0-23-generic /boot/vmlinuz-4.2.0-23-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 4.2.0-23-generic /boot/vmlinuz-4.2.0-23-generic
Errors were encountered while processing:
/var/cache/apt/archives/linux-image-4.2.0-23-generic_4.2.0-23.28_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

我该如何接解决呢？谢谢。

1. 這個通常是表示該程式套件沒有正確安裝或被移除了
可以把鼠標指向該圖示 按一下 右鍵或左鍵 看看是哪一個程式
通常正確重裝該程式套件就更正 (有些需要重新開機或重新啟動該程式)

2. 這個指令 除非是有經驗的老手 否則不建議使用
因為解決了一些問題 有時可能產生別的問題 而不自知
最好 把它當成最後選擇方案 萬不得已 不用它

3. 把下面指令 複製 貼進終端機 執行
3-1. sudo dpkg --configure -a
3-2. sudo apt-get -y check
把結果直接 選取/複製 貼上來

Perl 损坏
首先尝试

如果问题依旧，尝试从 http://packages.ubuntu.com/ 下载相关包
如 perl perl-base debconf
用 dpkg -i 手动安装

原因 不排除文件系统意外损坏

参考
http://www.linuxquestions.org/questions/linux-software-2/debconf-perl-may-be-unconfigured-cant-locate-debconf-log-pm-in-%40inc-849597-print/
https://lists.debian.org/debian-user/2003/08/msg04207.html
http://serverfault.com/questions/574690/debconf-broke-after-system-failure
http://ubuntuforums.org/showthread.php?t=1847445
http://debian.2.n7.nabble.com/Perl-is-broken-Can-t-locate-overload-pm-td1835955.html

引用：


sudo dpkg --configure -a 的结果如下：
Setting up mime-support (3.58ubuntu1) ...
Can't locate loadable object for module File::Glob in @INC (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.20.2 /usr/local/share/perl/5.20.2 /usr/lib/x86_64-linux-gnu/perl5/5.20 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.20 /usr/share/perl/5.20 /usr/local/lib/site_perl .) at /usr/sbin/update-mime line 75.
Compilation failed in require at /usr/sbin/update-mime line 75.
BEGIN failed--compilation aborted at /usr/sbin/update-mime line 75.
dpkg: error processing package mime-support (--configure):
subprocess installed post-installation script returned error exit status 255
dpkg: dependency problems prevent configuration of linux-image-extra-4.2.0-23-generic:
linux-image-extra-4.2.0-23-generic depends on linux-image-4.2.0-23-generic; however:
Package linux-image-4.2.0-23-generic is not installed.

dpkg: error processing package linux-image-extra-4.2.0-23-generic (--configure):
dependency problems - leaving unconfigured
Setting up samba-common (2:4.1.17+dfsg-4ubuntu3.1) ...
Can't locate loadable object for module POSIX in @INC (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.20.2 /usr/local/share/perl/5.20.2 /usr/lib/x86_64-linux-gnu/perl5/5.20 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.20 /usr/share/perl/5.20 /usr/local/lib/site_perl .) at /usr/share/perl5/Debconf/Template.pm line 7.
Compilation failed in require at /usr/share/perl5/Debconf/Template.pm line 7.
BEGIN failed--compilation aborted at /usr/share/perl5/Debconf/Template.pm line 7.
Compilation failed in require at /usr/share/perl5/Debconf/Question.pm line 8.
BEGIN failed--compilation aborted at /usr/share/perl5/Debconf/Question.pm line 8.
Compilation failed in require at /usr/share/perl5/Debconf/Config.pm line 7.
BEGIN failed--compilation aborted at /usr/share/perl5/Debconf/Config.pm line 7.
Compilation failed in require at /usr/share/perl5/Debconf/Log.pm line 10.
Compilation failed in require at /usr/share/perl5/Debconf/Db.pm line 7.
BEGIN failed--compilation aborted at /usr/share/perl5/Debconf/Db.pm line 7.
Compilation failed in require at /usr/share/debconf/frontend line 6.
BEGIN failed--compilation aborted at /usr/share/debconf/frontend line 6.
dpkg: error processing package samba-common (--configure):
subprocess installed post-installation script returned error exit status 255
Setting up grub-common (2.02~beta2-29ubuntu0.3) ...
Can't locate loadable object for module File::Glob in @INC (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.20.2 /usr/local/share/perl/5.20.2 /usr/lib/x86_64-linux-gnu/perl5/5.20 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.20 /usr/share/perl/5.20 /usr/local/lib/site_perl .) at /usr/sbin/update-rc.d line 353.
Compilation failed in require at /usr/sbin/update-rc.d line 353.
BEGIN failed--compilation aborted at /usr/sbin/update-rc.d line 353.
dpkg: error processing package grub-common (--configure):
subprocess installed post-installation script returned error exit status 255
dpkg: dependency problems prevent configuration of samba:
samba depends on samba-common (= 2:4.1.17+dfsg-4ubuntu3.1); however:
Package samba-common is not configured yet.

dpkg: error processing package samba (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of samba-common-bin:
samba-common-bin depends on samba-common (= 2:4.1.17+dfsg-4ubuntu3.1); however:
Package samba-common is not configured yet.

dpkg: error processing package samba-common-bin (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-image-generic:
linux-image-generic depends on linux-image-4.2.0-23-generic; however:
Package linux-image-4.2.0-23-generic is not installed.
linux-image-generic depends on linux-image-extra-4.2.0-23-generic; however:
Package linux-image-extra-4.2.0-23-generic is not configured yet.

dpkg: error processing package linux-image-generic (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of grub-pc-bin:
grub-pc-bin depends on grub-common (= 2.02~beta2-29ubuntu0.3); however:
Package grub-common is not configured yet.

dpkg: error processing package grub-pc-bin (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of grub-pc:
grub-pc depends on grub-common (= 2.02~beta2-29ubuntu0.3); however:
Package grub-common is not configured yet.
grub-pc depends on grub-pc-bin (= 2.02~beta2-29ubuntu0.3); however:
Package grub-pc-bin is not configured yet.

dpkg: error processing package grub-pc (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of grub2-common:
grub2-common depends on grub-common (= 2.02~beta2-29ubuntu0.3); however:
Package grub-common is not configured yet.

dpkg: error processing package grub2-common (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-generic:
linux-generic depends on linux-image-generic (= 4.2.0.23.25); however:
Package linux-image-generic is not configured yet.

dpkg: error processing package linux-generic (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
mime-support
linux-image-extra-4.2.0-23-generic
samba-common
grub-common
samba
samba-common-bin
linux-image-generic
grub-pc-bin
grub-pc
grub2-common
linux-generic

sudo apt-get -y check 的结果如下：
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:
linux-image-extra-4.2.0-23-generic : Depends: linux-image-4.2.0-23-generic but it is not installed
linux-image-generic : Depends: linux-image-4.2.0-23-generic but it is not installed
E: Unmet dependencies. Try using -f.

Thank you, poloshiao.

1. 先
sudo apt-get install linux-image-4.2.0-23-generic
2. 再
sudo apt-get install --reinstall linux-image-generic linux-image-extra-4.2.0-23-generic
3. 再
sudo dpkg --configure -a
4. 如果還有錯誤訊息 請複製貼上來
5. 為了避免打錯字 儘量從上面指令 複製/貼上 終端機 執行

6. sudo dpkg -l | grep linux-generic
把結果複製貼上來

非常感谢poloshiao和vickycq，因为还有很多别的毛病，我现在开始使用Fedora了。
再一次感谢两位的回复！
等到4月16.04发布了我可能会用回Ubuntu，但是现在Ubuntu和我的主板问题太多。