I was unable to recreate this on Vivid. After launching qtcreator, I held down the power button and while qtcreator did close itself, I was presented with the lock / suspend / restart / shutdown dialog and it did *NOT* automatically shutdown on me.
** Changed in: ubuntu Assignee: (unassigned) => Canonical Desktop Team (canonical-desktop-team) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1426851 Title: Power button shuts down computer if a Qt application is running To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1426851/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs