Raspberry Pi 400, Cyberdeck HAT PiTFT 3.5" Screen

[jacobtcoleman]

Hello all, I have been experiencing serious difficulties with my Raspberry Pi 400, Cyberdeck HAT, and PiTFT 3.5" touchscreen. I originally bought these components for the Cyberdeck Soft-Synth project. I have attempted FBCP installation over a dozen times, and no matter what I try to change, I always get the same result: this screen split four ways into trippy desktops. (See attached photo)

I originally had this system working as a Console display on the PiTFT (and that took many iterations to get working properly), but I wanted the tiny display to mirror the HDMI output, so I attempted to change it, and have been kicking myself in the butt since then.

My latest installation attempt is as follows:

• Installed the latest release of Raspberry Pi OS (32-bit) (released 2021-05-07).
  Raspberry Pi 400 booted up.
  Completed initial setup - location, password, black border, internet
  Installed updates.
  Rebooted.
  pip3 software package installer upgraded
  confirmed Python 3
  Installed PCF8591 Python Library
  downloaded Sonic Pi .deb
  sudo apt update
  Installed Sonic Pi via Console
  Installed Python OSC
  Ran PiTFT installer script
  cd ~/Raspberry-Pi-Installer-Scripts
  Ran command for Interactive Installation
  - 4 - PiTFT 3.5" resistive touch (480x320)
  - 1 - 90 degrees rotation
  - console - n
  - mirror - y
  Rebooting...
  FAIL... same 4 trippy screens and nothing on the Cyberdeck screen

I have also attempted to skip all updates (from the latest installation), as well as skipping other software installation and going straight to the PiTFT setup. I have also tried to use an IMG of the 2020-12-02 release (as suggested with the garbled screen troubleshooting). I have tried to set the screen up with the Easy Single Command Install Options, for both Console and FBCP.

I cannot figure out why this will not work and I am out of ideas. Any and all help will be greatly appreciated.

[adafruit_support_carter]

This seems OK:

Ran PiTFT installer script
cd ~/Raspberry-Pi-Installer-Scripts
Ran command for Interactive Installation
- 4 - PiTFT 3.5" resistive touch (480x320)
- 1 - 90 degrees rotation
- console - n
- mirror - y
Rebooting...

Is the TFT working OK? It's just your larger monitor that is having the issue?

[jacobtcoleman]

The larger monitor works perfectly well. It's the secondary to my Mac and I would switch the input to use the 400.

The biggest frustration is that the monitor and the 400 DID work together - I originally had it set up as a console only display, and the monitor gave me no issues. The problems arose when I tried to change this configuration to mirror the HDMI. Now, any installation gives me that strange split up image.

EDIT: In that console setup, the PiTFT and monitor both worked fine, but the console lost any function when I switched to the GUI. That was the reason that I wanted to switch it to mirror mode. As of now, the PiTFT does nothing except show a black screen or a solid gray screen.

[adafruit_support_carter]

The larger monitor works perfectly well. It's the secondary to my Mac and I would switch the input to use the 400.

How many other monitor are being used other than the TFT?

[jacobtcoleman]

Just the 24" (1080p) and the PiTFT.

[adafruit_support_carter]

Just the 24" (1080p)

And that's the same monitor as this?

The larger monitor works perfectly well

It's confusing what's working / not working.

[jacobtcoleman]

Yes, that is the same monitor. Sorry for the confusion.

The only two displays involved with Raspberry Pi 400 are the 24" 1080p and the 3.5" TFT.

Here is the Pi with both displays prior to TFT installation.

IMG_4680- 800.jpg (144.59 KiB) Viewed 233 times

This second image shows right after completing installation and rebooting.

IMG_4682- 800.jpg (91.12 KiB) Viewed 233 times

[jacobtcoleman]

I still can't get this TFT to work. All that I get is the same strange screen split into four quadrants.

I have tried interactive installation, I have tried the single line command. I just don't understand why this screen issue is occurring.

[adafruit_support_carter]

Sorry about this. Guessing there's something broken with the HDMI mirroring setup. I've opened a new issue for this here:
https://github.com/adafruit/Raspberry-P ... issues/186

[MakerMelissa]

I had the same symptom and was able to fix it by using the HDMI port closer to the display and rebooting a couple of times.

[jonnypsilocybin]

tempsnip1f.png (26.47 KiB) Viewed 170 times

Hi I have a Pi 400 and a cyberdeck hat, and a 3,5" tft.... plugged it all in and the screen lights up just full white... Maybe this isnt plug and play as it said, maybe I have a defective unit... Followed the forumn and saw something about plugging in the mini hdmi closest to the gpio pins and resetting to discover. did not work. display is plugged in starting at pin 1 on the left hand side of the pins at the top of the cyberdeck hat... Please someone direct me to somewhere with instructions on installation and any coding or command line commands or settings I need to get the screen to turn up as the monitor

[jonnypsilocybin]

got it working!! so I got there to where you were, went a little further and got some progress.

so from that dual glitched screen I hit the raspberry in the bottom left corner/ preferences/ Raspberry Pi configuration, then I hit Display/ Set resolution. I chose the top selection for default clicked OK then the escape key because it wasn't doing anything. It then prompted me to reboot, so I did. After rebooting I had a mirrored screen, well almost, the resolution is a little larger than my t.v, but I'm working on it. Let me know if this works for you.

cyberdeck_glitch_screen (800x600).jpg (64.56 KiB) Viewed 148 times

cyberdeck_screen_mirror (800x600).jpg (47.32 KiB) Viewed 148 times

kept messing with the resolution settings

fixed_screen_resolution (800x600).jpg (46.22 KiB) Viewed 148 times

Now I seem to have an issue with the tinkercad editor, Cura Ultimaker seems to work still, think it may be a chromium issue. Ill keep trucking along. Let me know if any Pi OS folk are having problems with tinkercad or other sites once tft installed. going to unplug it and reboot, maybe that will help

[jonnypsilocybin]

*no dice

tinkercad_not working (800x432).png (95.21 KiB) Viewed 147 times