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I'm trying to upgrade from Mint 13 to Mint 15, but receive the following error:

Calculating upgrade... Failed
The following packages have unmet dependencies:
 mate-media : Depends: mate-media-gstreamer but it is not going to be installed or
                       mate-media-pulse but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

It seems that mate-media-gstreamer and mate-media-pulse conflict with each other. Could someone help with this?

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CAREFUL if you installed graphic drivers (like nvidia's) with apt-get I highly recommend you to not upgrade, when I did that I got a new version of X which wasn't compatible with the driver, end up without graphical interface for a few days before I was able to uninstall the old driver and install a new one. – RSFalcon7 May 30 '13 at 6:22
thanks, I will download now the new version of the driver – damluar May 30 '13 at 6:30
before reporting bug, please use apt-get update before apt-get dist-upgrade – PersianGulf Oct 6 '13 at 7:54
try sudo apt-get install mate-media-gstreamer. I find that sometimes that gives additional info on why things aren't being installed. – strugee Nov 10 '13 at 5:24

I wouldn't recommend upgrading from Mint 13 to Mint 15. Mint doesn't take a lot of care to make upgrade smooth, and skipping a version increases the risk of problems. Upgrade to Mint 14 first.

When you have upgrade trouble with apt-get, try aptitude. It often uses different conflict resolution algorithms, and depending on the version one or the other may be better at resolving conflicts. Aptitude also gives you a nicer interface to try and resolve conflicts.

It may be worth uninstalling a few packages that cause trouble (e.g. mate-media), then doing the upgrade, and finally reinstalling the removed packages.

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