Xrandr and changing display resolution on Lattepanda Delta 3 w/ Ubuntu 16

My company has been using the lattepanda delta 2 for our product for some time. Typically I was able to change the resolution with some xrandr commands however now when I enter the following commands which had worked in the past I am getting an error. 

Here are the commands I used that had worked in the past.

1. cvt 1024 600 60

2. sudo xrandr --newmode "1024x600_60.00" 49.00 1024 1072 1168 1312  600 603 624 -hsync +vsync

3. sudo xrandr --addmode HDMI-1 "1024x600_60.00"

Lastly I would just add the last two lines of code (without the "sudo") to the .profile file.

but right after the second line of code I get the following error, "Xrandr: failed to get size of gamme for output default". 

I have tried all the solutions I can find online with no luck.

Has anyone found a way to change the resolution in Ubuntu 16.04.6 LTS on the Delta 3? 

It is really important I find a resolution as it is key for our product...

Thanks in advance!