As it's not clear from the description, reproducing this requires adding the overlay PPA as a software source to a vivid desktop, then installing ubuntu-system-settings, which in turn will pull in all the required Qt bits.
Also, for reference see bug #1480877 for the gory details. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/1523975 Title: [desktop] system-settings crashes on startup with 5.4.1+dfsg- 2ubuntu11~vivid1 Status in Canonical System Image: New Status in qtbase-opensource-src package in Ubuntu: New Bug description: The patch introduced in 5.4.1+dfsg-2ubuntu11~vivid1 causes system- settings to crash on startup for desktop users. See stack trace at http://pastebin.ubuntu.com/13825552/ To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1523975/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp