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This suddenly happened to me today after I upgraded my Unity (Ubuntu 14.04 LTS) via Software Updater. I got a warning telling me that I have installed packages that unmet dependencies.

I used Synaptic and use 'Fix Broken Package' but I get this error (I used apt-get -f install on terminal and get the same result):

E: /var/cache/apt/archives/liblwgeom-2.1.8_2.1.8+dfsg-1.pgdg14.04+1_amd64.deb: trying to overwrite '/usr/lib/liblwgeom-2.1.8.so', which is also in package liblwgeom-2.1.7 2.1.8+dfsg-1~95.git18216c0.pgdg14.04+1

I installed my postgres and postgis package from ppa http://apt.postgresql.org/pub/repos/apt . Never had any problem until today.

I've searched on the internet and tried the recommendations I found: apt-get clean, apt-get autoclean, apt-get update and apt-get upgrade, also dpkg --configure -a but none works for me.

I'm new in using Ubuntu and would very appreciate of your help here.

ariespranata
  • 113

2 Answers2

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I can confirm the bug for Ubuntu 12.04 LTS with the same PPA.

The following worked for me on Precise (mainly using "dpkg -r" to remove liblwgeom-2.1.7):

sudo service postgresql stop
sudo dpkg -r liblwgeom-2.1.7
sudo apt-get -f install
sudo service postgresql start
DeBugSöze
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sudo dpkg -i --force-overwrite /var/cache/apt/archives/liblwgeom-2.1.8_2.1.8+dfsg-1.pgdg14.04+1_amd64.deb

and

 sudo apt-get install -f

solve my problem.

More information: http://www.webupd8.org/2011/02/fix-dpkg-error-trying-to-overwrite-x.html

Ravan
  • 9,567
javieravalos
  • 16