Ubuntu – Screen resolution 1440×900 not listed

displaydisplay-resolutionnvidiaxorgxrandr

I just got a new nvidia graphics card that works fine at 1440×900 under window (dual boot setup).
Unfortunately, my monitor is not recognized by ubuntu.
Here is my xrandr -q output

Screen 0: minimum 8 x 8, current 1360 x 768, maximum 16384 x 16384
DVI-I-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DVI-D-0 connected primary 1360x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768       60.0 +
1360x768       60.0*    59.8  
1152x864       60.0  
800x600        72.2     60.3     56.2  
680x384        60.0     59.8  
640x480        59.9  
512x384        60.0  
400x300        72.2  
320x240        60.1  
1440x900_60.00 (0x1e7)  106.5MHz
   h: width  1440 start 1528 end 1672 total 1904 skew    0 clock   55.9KHz
    v: height  900 start  903 end  909 total  934           clock   59.9Hz

I manage to add the desired resolution (1440×900) but when I do 

xrandr --output DVI-D-0 --mode 1440x900_60.00

I get 

xrandr: cannot find mode 1440x900_60.00

Best Answer

Ok Mystery is over: I changed my DVI cable to a vga cable with a vga to DVI adapter and suddenly, Ubuntu is able to recognize my monitor and set the correct resolution. Maybe this is that way because my monitor is pretty old. This is in no way a correct answer to the larger problem i.e. the inability to set the correct resolution through xrandr but I will live with it.

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