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could someone help me resolve this ? I tried most of the commands here .. but none of them worked How do I resolve unmet dependencies after adding a PPA? 

apt-get install 

The following packages have unmet dependencies:
 libqt4-sql-psql : Depends: libqt4-sql (= 4:4.8.1-0ubuntu4.8) but 4:4.8.2+dfsg-2ubuntu1~precise1~ppa5 is to be installed
                   Depends: libqtcore4 (= 4:4.8.1-0ubuntu4.8) but 4:4.8.2+dfsg-2ubuntu1~precise1~ppa5 is to be installed
E: Unable to correct problems, you have held broken packages.
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canatan
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1 Answers1

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It seems like you are using or have been using the kubuntu backports ppa.

Check if you have pinned packages in /etc/apt/preferences.d/ preventing the install of certain package versions.

Then make sure the kubuntu backports ppa is added and updated by running the commands below. Run apt-get install python-software-properties (on Ubuntu 12.04 Precise) if you don't have the apt-add-repository command.

apt-add-repository ppa:kubuntu-ppa/backports
apt-get update

Then try to install the package again:

apt-get install libqt4-sql-psql

If apt is completely stuck and won't let you do the above, you might need to either uninstall the broken package or force install.

apt-get remove libqt4-sql-psql

or

apt-get install -f
taisph
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