I recently connected a Insignia™ 19" 720p Widescreen Flat-Panel LCD HDTV Model: NS-LCD19-09 to my Ubuntu 12.04 system via HDMI to a Nvidia Geforce 8400GS.

I am having a problem getting it to adjust to the correct resolution. According to the Nvidia X Server settings the model comes up as a ZRN Zoran hdmi tv currently at a resolution of 1680x1050. At this current resolution I am missing the edges of the entire screen. For example I can only see half of the unity dock but only after I increased the icon size as high up as it will go.

I have tried adjusting it to some of the preset settings in the Nvidia control panel but nothing is working and I'm not sure what to do to get it to display correctly.

Any help you can give me in resolving this issue is greatly appreciated.