I just upgraded to Ubuntu 16.04 from 14.04.
When I run System Settings, my CPU usage goes to 100%, and the Settings window always remains in focus. I tried to open System Monitor to kill System Settings, but the focus kept on changing back to Settings. When I click the close button, the current instance of Settings closes, but at the same time a new instance of the window pops up.
The only solution I found was to log out of the system.
Output of apt-cache policy unity-control-center
:
unity-control-center:
Installed: 15.04.0+16.04.20160413-0ubuntu3
Candidate: 15.04.0+16.04.20160413-0ubuntu3
Version table:
*** 15.04.0+16.04.20160413-0ubuntu3 500
500 http://jp.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
100 /var/lib/dpkg/status
15.04.0+16.04.20160413-0ubuntu1 500
500 http://jp.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
xkill
does not help either, another instance respawns instantly.libgnome-desktop-3.so.12: cannot open shared object file: No such file or directory
. Which is turn is due to dependencies bugs that hit me when upgrading from 2015.10 to 2016.04:ifupdown : Breaks: systemd (< 228-3~)