I have HDMI display which has corrupted EDID checksum and its working with other ARM board with work around.
The same display I am using on Rpi3 & rpi zero boards and got the below output image.
https://drive.google.com/file/d/13h7srCBQk_LqK2OXenCvuwivFZBHoO_9/view
Seems its using correct 1366x768 resolution but color is not correct, what could be the problem ?
And this is my config.txt file.
https://drive.google.com/file/d/1ydf13vYktgfleqCeXJb2SZX6PsErL1dq/view
Here is the link where I discussed the issue. BTW, this HDMI diplay works with Windows & Linux PC without any issues.
https://www.toradex.com/community/questions/19407/change-hdmi-lcd-resolution-in-toradex-imx6-board.html
Patches:
https://share.toradex.com/lg644qhtqv1jnk9?direct
https://share.toradex.com/pyzdaan5ozk9v4k?direct
How the EDID is handled in rpi hdmi driver if any corrupted or incorrect EDID data present ?
Thanks for the support & help.
The below forum link solved the problem. Hope it would help someone.
https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=205958&p=1277210#p1277210
Related
I got the following problem:
I need two cameras on my Raspberry Pi, so i bought a Waveshare IO-Base-A and a CM4 2GB. When trying to use two cameras with this setup, none of them work. Only one camera does work.
The official way on the Waveshare Wiki (https://www.waveshare.com/wiki/CM4-IO-BASE-A#CSI_DSI) doesn't work either, so i really don't know know what to do...
I do know that this isn't a problem that only occurs on my system, and it doesn't look like an Hardware-problem as well, since switching cameras etc didn't work for me as well. Editing the config.txt (on PiOS and Ubuntu Server) ends up with having 0 cameras that work. Only start_x=1 allows one camera to work.
Thanks for every answer
Referencing this item:
https://store.gumstix.com/gumstix-pi-compute-dev-board.html
I cannot use the official Pi camera(s) using either the official Raspberry Pi "Buster" disk image or the Pi disk image provided by Gumstix:
Disk image referenced here--> https://store.gumstix.com/raspberry-pi-cm-fast-flash.html
Note: The Gumstix Pi image would "hang" on the rainbow colored splash screen during boot, using the image above. I am using the "fast flash" board to write the images, and have been able to repeatedly (successfully) install the standard Raspbian OS. FYI I have been using Balena Etcher, and it has worked with my other boards.
Also, I followed the official instructions to add camera support in an attempt to understand what I am doing wrong. vcgencmd initially reported no support or detection in raspbian. I was able to add camera support using the blobs mentioned here (I compliled manually and also used the precompiled variant):
https://www.raspberrypi.org/documentation/hardware/computemodule/cmio-camera.md
Final result:
vcgencmd get_camera : supported=1 detected=0
Lastly, yes the camera is enabled, and I have tested the cam/cable on other systems with no issues. I suspect the pin GPIO settings may be to blame, but based on the information in front of me (for this board) I should not be expecting to manually adjust those params. Thanks for any insight….hopefully this is an I-D-10-T error.
First off I should appologize, the page you referenced about getting the disk image is very out of date. We will work to update it soon.
My guess of why it's not booting is likely a hardware imcompatibilty, are you using a Raspberry Pi CM3+?
Give this image a try
https://gumstix-raspbian.s3.amazonaws.com/2019-12-29/raspberrypi-cm3/rpi-4.19.y/2019-09-26-raspbian-buster-lite.img.xz
That's a recently compiled Buster image that has some extra drivers added in to support Geppetto modules. The default Buster image should also work.
To properly support any of our boards, it's best to download the board support package for that particular design. In your case, you're using the Gumstix Pi Compute Dev Board, which can be found
https://geppetto.gumstix.com/#!/design/1045/
Please go to that page and click on the "AutoBSP" button on the top. That will prompt you to download a zip file that will contain some instructions and files needed to configure the Raspberry Pi.
Please let me know if you have any trouble.
Thanks,
Andrew
The development board is STM32F4DISCOVERY, which includes an ST-LINK embedded debug tool. Recently, my computer cannot identify the ST-LINK on it. The Device Manager shows that 'Unknown USB Device（Device Descniptor Request Failed)' with a yellow '!'.Besides, the LD1(LED) on the board change between Red and Green every 5s. Below is the SCH of the ST-LINK.
ps: I've already re-install the device driver, changed the micro-USB cable and even tried on another computer. Still not work.
I had similar behavior when I shorted-circuit on 5V (of course accidentally). Please check voltage on D1, on both sides must be 5V.
Also, if the voltage is OK, I would recommend testing board on another PC.
I am using a Raspberry Pi 2 Model B. I also have a 3.5 inch Touch Display LCD for Raspberry Pi. I am running the Raspberry Pi with the attached Touch screen, but it only shows a white screen. It is connected via the GPIO port. I have installed Windows 10 IOT OS.
1) How can it connect to Raspberry Pi?
2) Why is it only White(Blank) Screen showing?
Usually, the 3.5 Inch LCD Display Modules require special drivers that do not come standard with the Raspbian OS. They either come packed with the Module itself (Usually for Raspbian) or are downloadable from the web. I'm not aware of any drivers for Windows 10, but with a datasheet you may be able to configure it for yourself (This may serve as a starting point for that kind of project if that's what you really want to do.)
To answer your two questions:
(1) The Display connects to the Raspberry by via the GPIO Port. You have already done this.
(2) The screen is white because this is the default state of the module when it is plugged in and not utilised.
Hope this helps!
I had the same problem! I solved it last night. Here is the answer on my post: How do you get a waveshare 3.5 inch touch LCD to work with Raspbian Jessie?. Hope this helps!
So far, what i tried is that
put raspbian image on to SD card.
power up PI with Sd card.
And after booting, a set-up option window popped up which i can't skip without keyboard.
Is there any way to skip this option menu ..?
Thank you
No, there are no buttons or physical input on the Raspberry PI itself, so without plugging some input device in you cannot skip the menu.
You could install Raspbian on a Raspberry PI emulator, do all the setup on your computer, then copy the already-setup disc image to your SD card. Here's a tutorial for setting up QEMU to emulate the Raspberry PI (and it includes installing Raspbian on the emulator): http://xecdesign.com/qemu-emulating-raspberry-pi-the-easy-way/
That seems like a lot of work though. You should probably just borrow someone's keyboard.