Questions tagged [troubleshooting]

Referring to troubleshooting (a form of problem solving) issues with the Pi or related to the Pi.

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39 views

Raspberry Pi as Router – I got lost in the instructions somewhere

I’m trying to create a secondary router with a Raspberry Pi 3B but somehow keep making the same error and missing some instruction. Maybe I’m using the wrong term which is why it’s not working – I’m ...
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1answer
131 views

RPi 3b+; updating bluez to 5.50-1.2~deb10u2 fails/hangs/

As topic says, after running apt update the OS (running Raspbian GNU/Linux 10 (buster) on kernel 5.10.52-v7+) wants me to update bluez and its dependencies. The version it's trying to update to is 5....
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2answers
30 views

Looking for a guide to USB ports - and how to trouble-shoot when things stop working

Having recently had problems when connecting different devices to my Pi over USB I am looking for a guide (link to) that explains in more detail what goes on in the OS when devices are plugged in to a ...
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30 views

Raspberry Pi Magic Mirror/Google Assistant

I installed a magic mirror software and installed google assistant with it but then after I started the module and tried giving a command everything but then the display shut off. The Pi still has ...
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1answer
35 views

PiCamera V2 NoIR and AMG8833 thermal sensor mmal_vc_port_enable: failed to enable port vc.null_sink:in:0(OPQV): ENOSPC

Hardware used: Raspberry pi 4b, 4 gb ram, AMG8833 thermal camera, PiCamera V2 noir, ALL brand new, i just bought them few weeks ago. Im trying to do finish a project and i ran into a not that good ...
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28 views

Using the USB port to transfer data to an RGB LED Matrix (which works off an IDC connection)

I'm wondering if anyone thinks its possible to attempt to drive an RBG LED Matrix using a USB port on the pi. I have a raspberry pi 400 but I fried a few of my GPIO pins so I can no longer drive my ...
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72 views

Pi Zero W USB port dead or not dead?

That is the question! This is my first Pi -> Zero W 2016 v1.1. USB problem happened after another very strange incident. After few days of normal operation, at boot logo screen my Pi suddenly ...
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1answer
116 views

RPi 4B 4GB: Excessive Shut Down time using the GUI shutdown

I have 5 - 4B-4GB's and 1-8GB systems. One of the 4GB systems is experiencing an excessive shutdown (power off) time of 4.5 minutes. All the other systems take about 15-20 seconds, all my systems ...
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38 views

MOSFET conducts current when no gate voltage

I have a Raspberry Pi 4B and a MOSFET IRLB8721PbF (https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdf) I have wired up a simple circuit with an LED, resistor, the MOSFET and a 6V DC power ...
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108 views

Pi4 OVERHEATING and damage micro sd

i have a pi4 2gb wich overheat and damage the microsd as soon as i boot it. After booting pi4 it show this message and the microsd start to burn. when i pull it out from pi and insert inside an ...
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50 views

Pi 4 not working with HHKB Hybrid type s keyboard

I can't find the keyboard device using the bluetooth manager and it does not work when I connect via usb. Any help please!!!
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1answer
126 views

Share Uart Pins

In my build i have a gsm module ( SIM800L ) connected to a RPI 0 W in this way: I would like to get also the current position of my device, for do so i was thinking to buy a Gps module ( NEO-6M STM32 ...
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39 views

Main Menu Editor gone

So I had my pi 4 for a few weeks now and everything was working fine. Suddenly, the main menu editor is missing and I can't seem to restore it. I tried starting it via 'alacarte' but nothing happens. ...
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1answer
91 views

Raspberry Pi 3 OpenCV Compilation Error at 34%

I am trying to install OpenCV-3.1.0. I am following this tutorial: https://www.pyimagesearch.com/2015/10/26/how-to-install-opencv-3-on-raspbian-jessie/ I was on Step #4: Compile and install OpenCV ...
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242 views

Raspberry 4 - NAS, slow copying over the network

Raspberry 4 - NAS, slow copying over the network I have problem with copying backup speed over network, currently only 30MB/s. How can I confirm that this is the maximum data backup speed? I tested ...
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1answer
113 views

rPi4 no longer capable of HDMI output. Eeprom recovery did not help

I have a rPi 4 that died on me, in two stages: First it would only show a yellow screen on HDMI outputs. Then later, it completely stopped outputting HDMI altogether. It seems to be in a reboot loop? ...
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1answer
67 views

Permanent IP Routing on rPi

I need to be able to ping my rPi through eth0, but it is connected to wifi via wlan0. Turns out, it receives the ping on eth0, and replies through wlan0. I have a rPi b+ 3, latest updates. Running ...
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717 views

My raspbian buster is stuck at Splash Screen with polkit.service!

I was working fine with my Rpi4 this morning. Next time when I started it was okay. Then there was some resolution issue. so I went into raspi-config and disabled the OpenGL. After a restart my PC is ...
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3answers
185 views

My raspberry pi HDMI is not working. What are my other options?

I got this old Raspberry Pi B+. One day, suddenly the HDMI stopped working completely. I know it boots up because I can still ssh into it. The thing is, I have no AV cables for alternate input. I ...
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1answer
203 views

RFID RC522 Clone Script Unicode Error

I've set up a RC522 Card on my pi using This Tutorial and hacked together the Read.py and Write.py scripts into a Clone.py script: #!usr/bin/env python import RPi.GPIO as GPIO from mfrc522 import ...
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1answer
834 views

Connecting a USB Device by GND, VCC, RX, and TX

I have a few basic devices that utilize a mini USB port. Rather than plugging them into a USB hub, is it possible to connect them and have them recognized by a Raspberry Pi through the four GND, VCC, ...
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173 views

Rpi AdaFruit python library controlling SPI MCP3008 of eTape Liquid Level Sensor problem

I have a rpi4 and have successfully replicated the project listed here using the eTape sensor (etape tutorial) I am satisfied with the performance using long breadboard and T-cobbler. In order to make ...
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1answer
36 views

Raspberry Pi with touchscreen - screen turns white and pi restarts when trying to use LEDs

We currently have a Raspberry Pi 3B+ with touchscreen hooked up to a PCB, and are trying to run adafruit neopixel 60led strip but, when we try and send data using their library, the screen turns white ...
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585 views

Raspberry Pi 4 drops hdmi connection for a second at boot tv reconnects, drops signal again after playing any type of video

I've been having a terrible experience with my raspberry pi 4 4G, with regards to a strange problem that's occurring. I am currently running NOOBS with raspbian/libreelec, and everytime after entering ...
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2answers
1k views

What is causing gaps in logs?

I am examining the log of my program, which runs on a Raspbian 9, on an SD card. The program is started and managed by systemd, and the logs are handled by journald. Occasionally the log contains ...
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32 views

Pi3 model B v2 no longer reads SD card!

I've had this pi for almost a year and have been using it recently for almost a month, and it used to work just fine. All of a sudden, the green LED stopped blinking "an indication I found out means ...
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1answer
90 views

Can Pi 3b+ be killed by wire under ethernet port

Can raspberry pi be killed by cable under ethernet port? I had moved pi on desk and placed it over a cable in area shown on picture (cable has only 5mm exposed wire), after that pi freezed and din´t ...
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116 views

Raspberry Pi 3 Model B Hung / Frozen, Including Clock?

I just happened to check on a Raspberry Pi 3 Model B with Raspbian Jessie 4.9.35-v7+ this morning and found it unresponsive. IIRC, there is an LED that is normally on when the Pi is on, so I thought ...
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0answers
190 views

Dropped wifi packets from Pi Zero W to Pi 3B+

We're trying to build a system where a master Pi 3B+ controls a dozen (or more) Pi Zero W clients - all running the latest raspbian (as of 18:00 EDT today) - in an isolated WiFi island (no ...
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1answer
43 views

Unable to Connect to Raspberry Pi with SSH

My Raspberry Pi is active on my network and I confirmed that it's online with an IP scanner. But if I run PuTTY (I usually connect through SSH instead of HDMI) and try to connect, it says that the ...
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40 views

Raspberry won't boot (even after replacing sd and power supply)

I was working on my raspberry over ssh, and then I lost connection with it. So then I saw that when it boots the red lights turns on while the green light doesn't light on and there is no display. ...
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37 views

Connecting Raspberry Pi Zero W to wifi [duplicate]

I've just set up a Raspberry Pi Zero W - my first Raspberry Pi. I've loaded Raspbian into it without trouble, but I can't connect it to WiFi. It can find my home network easily, and lets me key in ...
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1answer
28k views

How to update Chromium on RPi 3B+?

I'm brand new to Pi, and I found that the Raspberry Pi chromium is not as updated as standard Chromium. Thanks in advance. EDIT: For clarification, I am on Raspbian 2.5 (Nov. 2018) on a Raspberry Pi ...
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2answers
60 views

When under load, the system is unresponsive except for a ping

I've got a Raspberry Pi 1 Model B that has been my trusty workhorse for a few years. It normally chugs away happily running transmission, pi-hole and a node.js app simultaneously. All of a sudden it'...
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1answer
3k views

Help with installing zbar

I was hoping someone on here who's familiar with zbar could help me install it properly? Here's what happened: (I'm running Stretch on the Raspberry Pi 3 Model B). I download the file from here: ZBar ...
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0answers
288 views

RPi freezes at booting. Log screen attached

I'm working on a project where I have a couple of RPis recording some audio. Recently the devices stopped working and after probing I found out that devices stops at following screen while booting, ...
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2answers
419 views

Raspberry PI 3 freeze for some hours and afterwards its working

I've a strange issue with my raspberry pi 3: The raspberry is working fine, after a while the raspberry stops working for about 5 hours. Afterwards the raspberry recovers itself (without rebooting!) ...
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1answer
1k views

segmentation fault python

I was trying to install the opencv with TBB in a new virtual environment. So I have two virtual environments and a base environment. Before this compiling, the base environment was working well, with ...
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3answers
1k views

How do I change the desktop wallpaper on my Pi. I am using Jessie.

I have a number of images shown for my wallpaper in preferences but whatever I click on, does not change the wallpaper. I want to go back to the Raspberry Pi image and when I click on that image ...
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2answers
2k views

Act LED flashing 3 times quickly after boot

The ACT LED on my Raspberry Pi 3 B+ is flashing three times very quickly after boot. I am not able to connect via ssh (the error message is "Connection Refused" – despite ssh being enabled), but I am ...
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371 views

Raspberry Pi 3 crash after few hours running

I need your advice on troubleshooting my Pi 3B crashes. I set it up to run some crypto mining programming; it was running constantly fine for over few weeks. Recently, it keeps crashing after every 5-...
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1answer
185 views

SDA1 gpio test reports 0 when nothing is connected and i2cdetect -y 1 detects all addresses active?

I am fairly new to raspberry pi so if I am not providing enough information please let me know. Im working with a new Raspberry Pi 3. My issue is that the command i2cdetect -y 1 is returning all ...
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1answer
1k views

Raspberry Pi Internet Issues

On my raspberry Pi 3B, attempting to access the internet for downloads fails. Anything that uses it (chromium, apt-get, etc) does not work, giving errors such as DNS server not found, or just hanging. ...
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42 views

Detect a "crash" electrically or mechanically

Is there a mecahnical or electrical way to find out if a raspberry pi 3b has crashed? measuring voltage at a certain pin or similar?
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590 views

Mednafen Troubleshooting (specifacally SNES and Gameboy Advance)

I am trying to use mednafen and mednafee to run retro games on my raspberry pi. The NES games work great, and so do the Gameboy Color and Gameboy games, but I am having trouble with the SNES and GBA ...
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1answer
234 views

Pi3 Act blinks once, no boot

I have got a problem with my Paspberry Pi 3 that my girlfriend put away on a drawer. I cant boot it any more, I have tried the SD card in another pi, and it boots, even tried a diffrent SD card that ...
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2answers
27 views

Raspberry Pi 3 Wont show any power LEDs

I just was lucky enough to win a Raspberry Pi 3 at a school fair. I inserted an SD card with the boot image and gave it power. However, the green LED would not flash to show it was booting. I have ...
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0answers
476 views

Issues using SPI pins on Raspberry Pi 3 with MCP3008 ADC for Voltage Sensor [closed]

I am trying to create a voltage sensor using a Raspberry Pi 3 with Raspbian (February 2017 release because that is the one I need for the rest of my project) by connecting the SPI pins to an MCP3008 ...
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1answer
462 views

GPIO (using sysfs problem)

I'm presently trying to use the built-in indicator lights on the Raspberry Pi B+ to provide status: Green = OK; Red = Problem After turning off the triggers (writing none to /sys/class/leds/led[0,1]...
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1answer
2k views

Raspberry Pi 3, bluetooth is not getting connected with HM-10 bluetooth module

I currently have a Raspberry Pi 3 with built-in bluetooth and some of my work specification require to connect it with HM-10 bluetooth module but I am unable to do so. I have tried various methods ...