Removed xorg.conf and restarted. It seems this also causes a fallback to the oss ati driver and my screens set to mirror. Using the "configure display settings" tool I disabled mirror and the tool asked to change the virtual resolution in my xorg.conf. I was asked to log out and log in and now everything works correctly without using the "fix".
xorg.conf contents: Section "Screen" Identifier "Configured Screen Device" Device "Configured Video Device" SubSection "Display" Virtual 2560 1024 EndSubSection EndSection Section "Device" Identifier "Configured Video Device" EndSection -- At startup, can't drag windows between dual monitors https://bugs.launchpad.net/bugs/322921 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs