The trick is in the /etc/X11/xorg.conf file, particularly the modeline :
Section "Screen"
Identifier "Default Screen"
Device "nvidia ION"
Monitor "Vizio VX37L"
Defaultdepth 24
SubSection "Display"
Depth 24
Modes "1360x768C" "1024x768@60" "800x600@60"
EndSubSection
EndSection
Section "Device"
Identifier "nvidia ION"
Driver "nvidia"
Option "UseEvents" "1"
Option "DPI" "100x100"
Option "NoLogo" "1"
EndSection
Section "Monitor"
Identifier "Vizio VX37L"
Vendorname "Vizio"
Modelname "Vizio 37L"
Horizsync 31.5-70
Vertrefresh 50.0-85.0
Option "DPMS"
Option "ModeValidation" "NoWidthAlignmentCheck, NoDFPNativeResolutionCheck"
Option "ExactModeTimingsDVI" "TRUE"
modeline "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
modeline "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
modeline "1360x768C" 85.50 1366 1494 1624 1798 768 770 776 795 -hsync +vsync
Gamma 1.0
EndSection
The modeline for 1360×768 will also work for the SV421XVT. However the auto detected 1920×1200 work very well.
A nice trick is to ssh -Y user@host
xrandr -q --screen :0
This will show the screen info for screen:0 on the remote host.