Hello!
I have a 7 inch touch screen that connects to the "display" port on the pi4. When I turn on the pi the screen goes white and slowly fades black. I tried the screen on a pi3 and it works fine. I tried it on the pi 4 the the stock pi os and it also works. Do you have any suggestions on how to fix it? Here is a link to the screen I am using. I am also using the latest version of wtware.
https://www.raspberrypi.com/products/ra ... h-display/
Thanks!
Pi 4 7inch Touch Screen
Re: Pi 4 7inch Touch Screen
I was able to figure it out.
There are 2 pieces that need done to get it working.
1. Need to add an overlay that I was able to pull from the base raspberry pi os.
/overlays/vc4-kms-dsi-7inch.dtbo
I added the file on the server so when I write a new SD card it is automatically copied every time.
2. config.txt -
[pi4]
Changed dtoverlay=vc4-kms-v3d to dtoverlay=vc4-kms-dsi-7inch
I am not sure if this is the "correct" way to do it. but it seems to be working.
There are 2 pieces that need done to get it working.
1. Need to add an overlay that I was able to pull from the base raspberry pi os.
/overlays/vc4-kms-dsi-7inch.dtbo
I added the file on the server so when I write a new SD card it is automatically copied every time.
2. config.txt -
[pi4]
Changed dtoverlay=vc4-kms-v3d to dtoverlay=vc4-kms-dsi-7inch
I am not sure if this is the "correct" way to do it. but it seems to be working.