Just experienced this bug on a fresh Lubuntu 16.04 install (installed yesterday). Reinstalling the libraries as Thelamer suggested fixed the problem:
sudo apt-get --reinstall install libsigc++-2.0-0v5 libpangomm-1.4-1v5 libcairomm-1.0-1v5 libglibmm-2.4-1v5 libatkmm-1.6-1v5 -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to pavucontrol in Ubuntu. Matching subscriptions: Ubuntu Studio Bugs https://bugs.launchpad.net/bugs/881797 Title: pavucontrol will not launch missing lib fresh 64 bit xubuntu install Status in pavucontrol package in Ubuntu: Invalid Bug description: Description: Ubuntu 11.10 Release: 11.10 pavucontrol: Installed: 0.99.1-0ubuntu1 Candidate: 0.99.1-0ubuntu1 Version table: *** 0.99.1-0ubuntu1 0 500 http://us.archive.ubuntu.com/ubuntu/ oneiric/universe amd64 Packages 100 /var/lib/dpkg/status Pavucontrol will not launch and in turn I cannot select a default pulseaudio sound device. Complains: pavucontrol: error while loading shared libraries: libatkmm-1.6.so.1: cannot open shared object file: No such file or directory libatkmm-1.6-1 is already the newest version. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: pavucontrol 0.99.1-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 1.23-0ubuntu3 Architecture: amd64 Date: Tue Oct 25 20:52:48 2011 ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: pavucontrol UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pavucontrol/+bug/881797/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : ubuntustudio-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp