Unity Tweak tool simply sets unity preferences, it appears that unity is crashing, causing a logout when spread is attempted. Retargeting this bug to Unity.
If you have lost access to your account, you can try logging in from a tty and running unity-tweak-tool --reset-unity. You will however lose all your Unity settings. ** Package changed: unity-tweak-tool (Ubuntu) => unity ** Summary changed: - window spread set with unity tweak causes system logout + window spread causes system logout -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1462841 Title: window spread causes system logout To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1462841/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs