Here is more information about the problem.
$ lspci | grep VGA
03:00.0 VGA compatible controller: NVIDIA Corporation GF100GL [Quadro 5000] (rev a3)
And I have two monitors: Dell U2412M and Dell E2414H. The issue is that Dell U2414M has 1920x1200 resolution and works great but Dell E2414H only has 1280x1024 resolution (as the highest setting). Under Nvidia X Server Settings, this one actually shows up as NVIDIA_LCD_VGA and not as Dell like the other monitor.
My /etc/X11/xorg.conf file is https://pastebin.com/Pzf2jbjx
Both the monitors had 1920x1200 resolution and were working find till one of the recent updates from Ubuntu and I cannot get the higher resolution back on second monitor.
Any tips or guidance would be appreciated.