Thanks for answer. Yes the scaling was the problem. I adjusted it many days ago,. So I don't remember where. Now both displays are fine. But the thing is, the basic setting in Ubuntu 14.04 is that it's too small and I had to adjust it first. Now it is:
$ gsettings get com.ubuntu.user-interface scale-factor {'VGA1': 8, 'LVDS1': 8} -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1302496 Title: WIth 2 diplays, the panel on the 2nd is to small you can't read things there. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1302496/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs