So im having an odd issue with my setup...

A bit of data:
I use two monitors:
A Samsung 24" 1920x1200, and a
Medion 22", 1920x1080.
I use Arch Linux, with the Awesome window manager.
I have an NVIDIA GeForce GTX 650e graphics card.
Using the latest drivers for graphics (latest in arch repos. anyway)

When i connect the Samsung monitor, the window manager connects the screen, and all that works fine and dandy, except that many elements become waaaay to big, particularily fonts, which scales up to around 30pt, i cant even fit a standard 80x25 terminal on the screen.
In the config for xfce4-terminal, it says i'm using a 9pt font, but they're still huge.
It seems that if i don't use a graphics driver (or using nouveau drivers, not sure which), this problem goes away, also if i dont have the 1920x1200 screen connected, this also solves the issue.
I speculate the issue might be the 16:10 screen resolution, that has the graphics thinking its a 2k screen, but i can't seem to fix this, or find any solution anywhere on the internet. Heck, even the arch wiki does not seem to have a fix.
Can you help me?

Post the output of xrandr. Most likely your monitor is reporting physical size incorrectly.

xrandr gives me this output:

Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 16384 x 16384
VGA-0 disconnected primary (normal left inverted right x axis y axis)
DVI-D-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 478mm x 269mm
1920x1080 60.00*+
1680x1050 59.95
1600x1200 60.00
1440x900 74.98 59.89
1400x1050 59.98
1360x768 60.02
1280x1024 75.02 60.02
1280x960 60.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
640x480 75.00 72.81 59.94
HDMI-0 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 160mm x 90mm
1920x1200 59.95*+
1920x1080 60.00 59.94 50.00 60.05 60.00 50.04
1600x1200 60.00
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94


Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 16384 x 16384
VGA-0 disconnected primary (normal left inverted right x axis y axis)
DVI-D-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 478mm x 269mm
1920x1080 60.00*+
1680x1050 59.95
1600x1200 60.00
1440x900 74.98 59.89
1400x1050 59.98
1360x768 60.02
1280x1024 75.02 60.02
1280x960 60.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
640x480 75.00 72.81 59.94
HDMI-0 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 160mm x 90mm
1920x1200 59.95*+
1920x1080 60.00 59.94 50.00 60.05 60.00 50.04
1600x1200 60.00
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 16384 x 16384
VGA-0 disconnected primary (normal left inverted right x axis y axis)
DVI-D-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 478mm x 269mm
1920x1080 60.00*+
1680x1050 59.95
1600x1200 60.00
1440x900 74.98 59.89
1400x1050 59.98
1360x768 60.02
1280x1024 75.02 60.02
1280x960 60.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
640x480 75.00 72.81 59.94
HDMI-0 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 160mm x 90mm
1920x1200 59.95*+
1920x1080 60.00 59.94 50.00 60.05 60.00 50.04
1600x1200 60.00
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 16384 x 16384
VGA-0 disconnected primary (normal left inverted right x axis y axis)
DVI-D-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 478mm x 269mm
1920x1080 60.00*+
1680x1050 59.95
1600x1200 60.00
1440x900 74.98 59.89
1400x1050 59.98
1360x768 60.02
1280x1024 75.02 60.02
1280x960 60.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
640x480 75.00 72.81 59.94
HDMI-0 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 160mm x 90mm
1920x1200 59.95*+
1920x1080 60.00 59.94 50.00 60.05 60.00 50.04
1600x1200 60.00
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94


Also, for reference, here is how my screen looks atm:
screen

So i tried switching the cables between the monitors, and now everything works as a charm... go figure.

Thanks for the help and sorry for any inconvienience

160mm x 90mm means the viewable area on that monitor is 6.3" x 3.5". That's a pretty small monitor.