Ubuntu – Gedit not working even though it’s installed in Ubuntu 14.10

aptgeditgnomenautilusunity

When I type gedit in my terminal, I get:

daniel@daniel-pc:~$ gedit
The program 'gedit' is currently not installed. You can install it by typing:
sudo apt-get install gedit

So I do that:

daniel@daniel-pc:~$ sudo apt-get install gedit
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 gedit : Depends: gedit-common (< 3.11) but 3.12.2-0ubuntu1~trusty1 is to be installed
E: Unable to correct problems, you have held broken packages.
daniel@daniel-pc:~$

Background:

I followed all the code seen at http://howtoubuntu.org/things-to-do-after-installing-ubuntu-14-10-utopic-unicorn, but after I noticed that many basic programs (like getedit and nautilus) had the gnome style instead of the unity style, I removed the PPAs from the GUI software and Updates.

I also sudo apt-get install edubuntu-desktop-ed to get the programs found in edubuntu, but after it changed the theme and backgrounds I followed the instructions here: How remove all programs comes from a package?, selecting programs I did not want from the list that it returned. I run

daniel@daniel-pc:~$ apt-cache show gedit
Package: gedit
Priority: optional
Section: gnome
Installed-Size: 2615
Maintainer: Ubuntu Desktop Team <ubuntu-desktop@lists.ubuntu.com>
Original-Maintainer: Debian GNOME Maintainers pkg-gnome-maintainers@lists.alioth.debian.org
Architecture: amd64
Version: 3.10.4-0ubuntu6
Depends: libatk1.0-0 (>= 1.12.4), libc6 (>= 2.14), libcairo2 (>= 1.2.4), libenchant1c2a (>= 1.6.0), libgdk-pixbuf2.0-0 (>= 2.22.0), libgirepository-1.0-1 (>= 0.9.3), libglib2.0-0 (>= 2.38), libgtk-3-0 (>= 3.10), libgtksourceview-3.0-1 (>= 3.10.1), libpango-1.0-0 (>= 1.14.0), libpeas-1.0-0 (>= 1.1.0), libx11-6, libxml2 (>= 2.7.4), libzeitgeist-2.0-0 (>= 0.9.9), gedit-common (>= 3.10), gedit-common (<< 3.11), gsettings-desktop-schemas, python3-gi (>= 3.0), python-gi-cairo (>= 3.0), gir1.2-peas-1.0, iso-codes
Recommends: gir1.2-gtksource-3.0, zenity, yelp
Suggests: gedit-plugins
Breaks: gedit-plugins (<< 2.91)
Filename: pool/main/g/gedit/gedit_3.10.4-0ubuntu6_amd64.deb
Size: 483208
MD5sum: 3e4508090c23d68053212ab02cb0287c
SHA1: 9f38aafddfa21cd2743b863b1783710a5360d0d2
SHA256: d43073382e1b9894abecfcd8fe6a04e2c771f6aabe0891e666a8f59ee2107283
Description-en: official text editor of the GNOME desktop environment
 gedit is a text editor which supports most standard editor features,
 extending this basic functionality with other features not usually
 found in simple text editors. gedit is a graphical application which
 supports editing multiple text files in one window (known sometimes as
 tabs or MDI).
 .
 gedit fully supports international text through its use of the Unicode
 UTF-8 encoding in edited files. Its core feature set includes syntax
 highlighting of source code, auto indentation and printing and print preview
 support.
 .
 gedit is also extensible through its plugin system, which currently
 includes support for spell checking, comparing files, viewing CVS
 ChangeLogs, and adjusting indentation levels.
Description-md5: 5091aaf6659e6bf7ca9b32695a59f9cd
Homepage: http://www.gnome.org/projects/gedit/
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Supported: 9m
Task: ubuntu-desktop, ubuntu-usb, edubuntu-desktop, edubuntu-usb, ubuntustudio-desktop, ubuntu-gnome-desktop, ubuntukylin-desktop

daniel@daniel-pc:~$

So it says gedit is installed, but it isn't. I tried to uninstall the Gnome version of gedit by doing `sudo apt-get remove gedit=' and the version number, but I don't remember it.

EDIT:

daniel@daniel-pc:~$ apt-cache policy gedit-common
gedit-common:
  Installed: 3.12.2-0ubuntu1~trusty1
  Candidate: 3.12.2-0ubuntu1~trusty1
  Version table:
 *** 3.12.2-0ubuntu1~trusty1 0
        100 /var/lib/dpkg/status
     3.10.4-0ubuntu6 0
        500 http://us.archive.ubuntu.com/ubuntu/ utopic/main amd64 Packages
daniel@daniel-pc:~$

EDIT:
Image of nautulus now, which is what gedit looked like before uninstall: link look at the menu bar. It lookes like gnome, not default unity. Also I would like a general solution for all programs affected by this, not just gedit and nautilus (though I don't know if there are any).

Best Answer

First run 

sudo apt-get purge gedit gedit-common
sudo apt-get clean

Then after install gedit using

sudo apt-get install gedit

It should work.

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