I have a screen capable of supporting a resolution of 1920x1080, but when I plug it in with a VGA cable to my laptop, the largest resolution it supports is 1024x768. I searched the internet to find a way to add a mode to enable support for this resolution. Here are the steps I followed:
gtf 1920 1080 60 xrandr --newmode "1920x1080_60.00" 172.80 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +Vsync xrandr --addmode VGA1 1920x1080_60.00 xrandr --output VGA1 --mode 1920x1080_60.00
I also tried using ctv because the modeline that it prints out is slightly different.
At the end of this process, my external monitor displays a higher resolution image, but it is distorted. A tiny fraction of the bottom is cut off. On the left, there is a huge blank black area that has a strange vertical yellow/orange stripe going down it. The right has a smaller gap. The image itself looks as if it has been squished from the sides and stretched vertically a bit. Please excuse the poor image quality below. Hopefully it helps convey the issue I am trying to describe.
I'm not sure where to go from here because I don't know exactly what the problem is except for "it's squished."
Thank you all for your help. You rock.