How to get a resolution of 2560x1080 when connecting an additional monitor to a DELL Vostro 3700 laptop?

Question

Video cards

The monitor is connected via HDMI.
Video card NVIDIA GeForce GT 330M.
Everything seems to be ok with the drivers.
When choosing a resolution, there are no 21:9 format options.
How to make this format available?

Answer 1

in linux this is done by regular xrandr,
for example, this is how I added point-to-point resolution for a bbk TV where for some reason it was not done at the factory

sudo xrandr --newmode "1366x768_60" 85.25 1366 1440 1576 1784 768 771 781 798 -hsync +vsync
xrandr --addmode HDMI-1 "1366x768_60" 
xrandr --output HDMI-1 --mode "1366x768_60"

and do this every time after starting the graphical shell, the parameters for newmode can be obtained using
cvt 1366 768 60
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for windows try this utility, it will allow you to write the desired resolution to the monitor memory