[GUIDE] Official Raspberry Touch Display 2

Help and Support Guides
61

It’s me again, sorry…
Now for today I got a new challenge.
I’ve played around with my new touchscreen and - as mentioned - got it get work.
Today - because for some strange reason the (display-wise working) Volumio installation on an USB-SDD Drive do not execute a “sudo reboot” - I’ve switched back to the original installation on a SD-card.
In THIS installation I am not able to get the touch-funtionality working.
Have done the exact same modifications as in SDD-installation:

/boot/userconfig.txt 
added:

[all]
display_auto_detect=1

#display 7Zoll
dtoverlay=vc4-kms-v3d-pi4,nohdmi
dtoverlay=vc4-kms-dsi-ili9881-7inch

/boot/cmdline.txt
added:  
video=DSI-1:720x1280M@60

What I’missing to enable touch?

THANKS!

Ralf

annotation: the whole thingi seems to be kind of “sensitive” …
a fast switching from SD card to USB SDD results in a “greyish” screen …
Switching off, waiting and than switching on - works …

62

Hey @rkorell,

I don’t think that the Touch Screen 2 or overlays are problem here.
Since you are using Raspberry Pi 4B - this is the USB boot problem you are facing.

Kind Regards,

63

A post was merged into an existing topic: [Guide] Prepare Raspberry Pi for boot from USB/NVMe

65

Hi @nerd

I have been trying to set this up proper and got it working. Correct view on screen, right rotation, able to play etc. Everything worked. Then I tried to add some support for Bluetooth speaker, but then the touch part stopped working.

Did a reflash and set up everything again, screen is on and I can see the player, but the touch part is not working.

RPi 3b+
Volumio 3.795
Touch Display 3.5.1
16GB SD card

Also added this to config file

[all]
display_auto_detect=1
dtoverlay=vc4-kms-v3d
dtoverlay=vc4-kms-dsi-ili9881-7inch,rotation=270

Anyone have any idea on whats missing?

EDIT: Sorry for deleting the previous. I thought it suddenly was working, but it was not. :frowning:

66

Dear Volumionauts,

This thread is dealing with the Official Raspberry Pi Touch Display 2 (hardware) discovery.

For Touch Display (software) plugin please head to the designated thread:

Kind Regards,