I recently wrote up my new raspberry pi workstation with a nice new ViewSonic VA2246M but by default the Pi would only output 1600x1200. The configuration for the HDMI lives in the config.txt file in /boot.
I've been working on my timelapse camera setup with my raspberry pi and when trying to run my python script I got the following error. This is a permissions error because I had created a new user that wasn't in the video group.