Achieving 1680×1050
Getting to this magical resolution is a fairly simple affair in a Windows XP environment, but in Linux you’ll need to get ready to configure your hardware a bit. I had katana running when I unceremoniously detached the 19″ CRT and replaced it with the Samsung 2232GW. Subsequent reboots had little effect on convincing Fedora that a superduper 1680×1050 capable display had been attached. Try as I might, it was simply impossible to gain a higher resolution than 1280×1024, the highest the CRT was capable of. Black screen and a muddled display where the most I got to see. A painful reset of the system was the only way out.
The problem, of course, lies with the nVidia Linux driver. It has the annoying habit of assuming control and constantly overwriting any setting change made. It seems to be impossible to generate a new screen definition within the driver’s control panel. At least, it’s something I didn’t manage. I stumbled into various forums and a lot of googling indicated many others with a similar issue, but no direct resolution, pardon the pun.

Here’s what worked for me.
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