I have an nVidia GeForce 9600 GT with dual DVI connections in a desktop computer.
DVI-1 is connected via DVI cable to a 22" Samsung panel. Ubuntu 12.04.2 64-bit is running successfully. At/after installation, by default the "post-release-update (version current-updates)" restricted nVidia driver was installed and working.
After shutting down the computer, I moved the 22" to DVI-0 and added a 19" LG onto DVI-1. This monitor only has a VGA connector, so I used a DVI to VGA converter. I booted the machine and the BIOS, etc. appeared on the 22", as did the Ubuntu logon screen. The 19" showed a wallpaper without any logon, just at the wrong resolution. After logging in, I went to Displays and adjusted the resolution for the 19". The closest is 1360x768. The monitor's native resolution (I pressed auto-adjust on the monitor to confirm) is 1366x786. The display is not crisp -- it's showing the standard blurriness when not at the native resolution. The 19" appears in Displays as "Unknown", even after pressing "Detect Displays". The cable is not loose and I tried with a different VGA cable. Also, moving windows around on the 22" is now creating visual tearing. All in all, it's not worth the effort at the moment...
To set the correction resolution for the 19", am I back to manually hacking multiple-monitors via
xrandr each time I boot and/or fiddling around with different nVidia drivers?