Comment 4 for bug 777572

Thanks for the report Samo. You are hitting two separate known issues:

 1) The main panel (the one that contains the Ubuntu button to show the dash) shows on the primary monitor instead of the leftmost one. This is bug #757652, and it is already fixed in the development branch (you can try it out if you are using unity-2d’s daily builds PPA, see https://launchpad.net/~unity-2d-team/+archive/unity-2d-daily for instructions).

 2) The top edges of your two monitors are not aligned (in fact they are aligned along the bottom edges), so the panel on the leftmost monitor is out of sight (and so is the dash, partially). This requires a fix in Qt. We already have such a fix, but it is currently pending a review by upstream Qt developers. This is tracked by bug #735937.