Lower resolution of LVDS-0 in different aspect-ratio nVidia

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http://unix.stackexchange.com – I am trying to clone 2 displays. I have a laptop with 1440x900 resolution and an external monitor with 1024x768 resolution. I want the laptop screen to show the same as the external monitor however, since the last update I cannot select a lower resolution for the laptop than it's native resolution of 1440x900 in nvidia-settings. Simply put, I want the laptop screen to display 1024x768 and cloned to the external monitor. I have looked into xrandr and came to the following commands, however this does not work. dennisf@anarki:~$ cvt 1024 768 60 # 1024x768 59.92 Hz (CVT 0.79M3) hsync: 47.82 kHz (HowTos)