I have solved by installing the package from https://launchpad.net/~ubuntu-backports-testers/+archive/ppa/+sourcepub/1718390/+listing-archive-extra It was suggested here: http://ubuntuforums.org/showthread.php?t=1708319
I have solved by installing the package from /launchpad. net/~ubuntu- backports- testers/ +archive/ ppa/+sourcepub/ 1718390/ +listing- archive- extra ubuntuforums. org/showthread. php?t=1708319
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It was suggested here:
http://