I get this in 15.04 as well, based on the description. When I close the lid, the external monitor initially turns off and then it turns straight back on again as the primary monitor, exactly as if I had turned off the internal monitor via the screen settings GUI instead of closing the lid.
If I've read the description correctly, perhaps the title of this bug report should say "Internal screen turned off..." instead of "External screen turned off..."? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1398771 Title: External screen turned off instead of suspending on lid close To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-settings-daemon/+bug/1398771/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs