Monitor Configuration Issues with Ubuntu

I'm using Ubuntu Mate 16.04 with a Sapphire 380x using the PRO drivers.

The configuration looks like this at the moment:

I want the Dell to be right next to the AOC that way there isn't a void in the middle. It causes problems with games in fullscreen.

I want it more like this:

Of course I want the Dell on the left side of the AOC. Before someone suggests moving the monitors physically, I would prefer not too, as the current layout makes the best use of my desk space.

Does just moving them together not work? That's usually how you do that. Clicking and dragging them together.

I remember FlameSilver talking about this, the UI wont allow it for whatever reason. Im wondering if its a bug.

Maybe it can be set via the command line.

Ohh, you have catalyst installed? That may be what you need to use.

gksudo amdcccle

@Phantom That just brings up a password prompt, then nothing happens after I type in my password

@tsuser1729 I can't make much sense of it what I'm supposed to do with xrandr, but here's the output for xrandr --current:

Screen 0: minimum 320 x 200, current 3600 x 1680, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected primary 1920x1080+1680+355 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.00*+ 50.00 59.94
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1280x800 60.00
1280x720 60.00 50.00 59.94
1024x768 75.08 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
DVI-D-0 disconnected (normal left inverted right x axis y axis)
DVI-D-1 connected 1050x1680+0+0 right (normal left inverted right x axis y axis) 430mm x 270mm
1680x1050 59.88*+
1280x1024 75.02 60.02
1440x900 59.88
1280x800 59.88
1152x864 75.00
1280x720 59.88
1024x768 75.08 60.00
800x600 75.00 60.32
640x480 75.00 60.00
720x400 70.08