Display_rotate=3 only filling half screen Raspberry Pi 4

Question

I have an issue such that when I rotate my screen to portrait with Display_rotate=3, the raspberry pi only fills the bottom half of the screen.

Welcome to SE Raspberry Pi! It would have been a bit more in the style of this website if you had answered your own question with 'Your Answer'. — ON5MF Jurgen, Sep 03 '19 at 11:30
To keep with our formatting here, I have edited your question to just be a question, and posted your answer as an answer below. Of course, it is your answer and not mine, so if you'd like, you can post your answer below again and I will remove mine. — Patrick Cook, Sep 04 '19 at 13:27

score 2 · Answer 1 · answered Sep 04 '19 at 13:23

OP posted his answer as an edit to his question, so I have edited it and moved the answer here:

After some searching and looking online I found out a solution:

In terminal type: sudo nano /boot/config.txt

scroll down to:

[pi4]

#Enable DRM VC4 V3D driver on top of the dispmanx display stack

and comment out: dtoverlay=vc4-fkms-v3d

when done your config should look like this:

[pi4]
#Enable DRM VC4 V3D driver on top of the dispmanx display stack

#dtoverlay=vc4-fkms-v3d