Sorry, could you explain this "changing from Xinerama to TwinView". I have the same problem you had but find no way to solve it. Please help! – UbuntuclassicMar 30 at 0:11
I have 2 monitor configuration on Nvidia card, and I changed multimonitor settings in nvidia-settings tool from Xinerama to TwinView. – relgamesApr 1 at 15:37