Actualy a Ubuntu question, not a libvirt question… What I do in these cases, I download the packages manualy from http://packages.ubuntu.com And instead of just doing this with the libraries, why not also with libvirt it self? This method doesn’t guarantee a correct working of the installed packages. I’t better to upgrade your Ubuntu to a version which has the correct package versions in the repositories. *Van:* libvirt-users-bounces(a)redhat.com [mailto: libvirt-users-bounces(a)redhat.com] *Namens *Waqas Riaz *Verzonden:* maandag 7 december 2015 8:06 *Aan:* libvirt-users(a)redhat.com *Onderwerp:* [libvirt-users] Issues with installing Libvirt 1.2.7 on Ubuntu 12.04 Hi, I am trying to manually install libvirt 1.2.7 on Ubuntu 12.04 LTS (64bit). I have installed libxml2-dev libgnutls-dev libcurl4-gnutls-dev python-dev, but I am facing dependency issues for libdevmapper libraries. ​ ​Is there any workaround for this dependency​? OR is there any other way to install libivirt 1.2.7 on Ubuntu 12.04. ​ ​Following is the output of the error​ #apt-get install libdevmapper-dev 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: libdevmapper-dev : Depends: libdevmapper1.02.1 (= 2:1.02.48-4ubuntu7.4) but 2:1.02.90-2ubuntu1 is to be installed Depends: libdevmapper-event1.02.1 (= 2:1.02.48-4ubuntu7.4) but 2:1.02.90-2ubuntu1 is to be installed E: Unable to correct problems, you have held broken packages. Kind Regards, Waqas Riaz MTS, xFlow Research Inc. +92-332-6396672 waqas.riaz(a)xflowresearch.com <ashok(a)xflowresearch.com&gt; www.xflowresearch.com This electronic message transmission contains information from the Company that may be proprietary, confidential and/or privileged. The information is intended only for the use of the individuals or entity named above. If you are not the intended recipient, be aware that any disclosure, copying or distribution or use of the contents of this information is prohibited. If you have received this electronic transmission in error, please notify the sender immediately by replying to the address listed in the “From:” field.