QGIS- Unable to load GdalTools plugin

When I start QGIS, it display error message: Unable to load GdalTools plugin. The required "osgeo [python-gdal]" module is missing. Install it and try again.

Couldn't load plugin 'processing' from ['/usr/share/qgis/python', '/home/notroot/.qgis2/python', '/home/notroot/.qgis2/python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/ubuntuone-client', '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel', '/usr/lib/python2.7/dist-packages/ubuntuone-couch', '/usr/lib/python2.7/dist-packages/ubuntuone-installer', '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol', '/usr/share/qgis/python/plugins/fTools/tools']

I am using QGIS 2.6 and Ubuntu 12.04!

This is the packages I have installed:

dpkg -l | grep qgis

 - libqgis-analysis2.6.1            2.6.1-1precise1           
   QGIS - shared analysis library
 - libqgis-core2.6.1                2.6.1-1precise1                         QGIS - shared core library
 - libqgis-customwidgets            2.6.1-1precise1               
   QGIS custom widgets for Qt Designer 
 - libqgis-gui2.6.1                 2.6.1-1precise1                         QGIS - shared gui library
 - libqgis-networkanalysis2.6.1     2.6.1-1precise1               
   QGIS - shared network analysis library 
 -  libqgisgrass2.6.1               2.6.1-1precise1                         QGIS - shared grass library 
 -  libqgispython2.6.1              2.6.1-1precise1           
   QGIS - shared Python library 
 -  python-qgis                     2.6.1-1precise1                         Python bindings to QGIS 
 -  python-qgis-common              2.6.1-1precise1               
   Python bindings to QGIS - architecture-independent files 
 -  qgis                            2.6.1-1precise1                         Geographic Information System (GIS) 
 -  qgis-common                     2.6.1-1precise1     
   QGIS - architecture-independent data 
 -  qgis-plugin-globe               2.6.1-1precise1                         OSG globe plugin for QGIS 
 -  qgis-plugin-globe-common        2.6.1-1precise1               
   OSG globe plugin for QGIS - architecture-independent data 
 -  qgis-plugin-grass               2.6.1-1precise1               
   GRASS plugin for QGIS 
 -  qgis-plugin-grass-common        2.6.1-1precise1                         GRASS plugin for QGIS - architecture-independent data 
 -  qgis-providers                  2.6.1-1precise1                         collection of data providers to QGIS 
 -  qgis-providers-common           2.6.1-1precise1   
   collection of data providers to QGIS - architecture-independent files
 - qgis-server                      2.6.1-1precise1           
   QGIS server providing various OGC services

1.10.0-1~precise2 ii libgdal-dev 1.10.0-1~precise2 Geospatial Data Abstraction Library - Development files rc libgdal1-1.7.0 1.7.3-6ubuntu3 Geospatial Data Abstraction Library ii libgdal1h 1.10.0-1~precise2 Geospatial Data Abstraction Library ii python-gdal 1.10.0-1~precise2 Python bindings to the Geospatial Data Abstraction Library ii python3-gdal 1.10.0-1~precise2 Python 3 bindings to the Geospatial Data Abstraction ibrary