As the title says, I've been trying to get my Kali image, which runs in virtualbox, running on my two separate monitors.
I've tried a number of things - I (believe) that I have guest additions installed, plus the extension pack.
When I go to displays in Kali, it says that it can't get display information.
Putting it in seamless mode does split my various windows but doesn't let me drag them off the one screen.

xrandr tells me:
Code:
xrandr
Screen 0: minimum 320 x 200, current 1920 x 994, maximum 16384 x 16384
VGA-1 connected primary 1920x994+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1920x994      59.90*+
   2560x1600     59.99    59.97  
   1920x1440     60.00  
   1856x1392     60.00  
   1792x1344     60.00  
   2048x1152     60.00  
   1920x1200     59.88    59.95  
   1920x1080     60.00  
   1600x1200     60.00  
   1680x1050     59.95    59.88  
   1400x1050     59.98    59.95  
   1600x900      60.00  
   1280x1024     60.02  
   1440x900      59.89    59.90  
   1280x960      60.00  
   1366x768      59.79    60.00  
   1360x768      60.02  
   1280x800      59.81    59.91  
   1280x768      59.87    59.99  
   1280x720      60.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   848x480       60.00  
   640x480       59.94  
VGA-2 disconnected (normal left inverted right x axis y axis)
and if it's relevant, my host is osx el cap running on a Macbook pro 2015, my two monitors are samsung and ASUS and are connected via thunderbolt/dvi and hdmi respectively.

Please help, I really want to get this working (btw my actual Kali dual boot works totally fine with two plus screens).

Thanks