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Questions tagged [troubleshooting]

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

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USB not working for CM4S

I used to work with CM3+ and I recently got some CM4S. I have an issue with it and I don't know what to think about it. Previous setup: I have a Compute Module IO Board Plus designed by WaveShare. ...
Bibibou's user avatar
  • 13
0 votes
0 answers
111 views

Pico BOOTSEL mode stopped working - device descriptor read/64, error -110

This is my first RPi Pico experiment, so I'm a rookie here. I've connected an ultrasonic sensor to it and written a script in Python (in Thonny) to get readings and save them to local flash memory. ...
Tomislav Nakic-Alfirevic's user avatar
0 votes
1 answer
43 views

Problem in route when not using the usb 4G dongle

I tried to plug in my E3372h Huawei modem, it was recognised automatically as an eth1, and the route -n showed 192.168.8.1 as default gateway, substituting the 0.0.0.0 default route accordingly (why?)....
Nick's user avatar
  • 1
0 votes
0 answers
27 views

Trying to allow MAC address whitelist to take effect without needing to reboot Pi

I am using a Raspberry Pi 3B with PiOS and I followed these tutorials for setting up a raspberry pi as a WAP and enabling MAC address filtering... https://learn.sparkfun.com/tutorials/setting-up-a-...
Wiserman's user avatar
0 votes
1 answer
127 views

Can't ping between two Raspberry Pi 4s on WiFi running bookworm

I have two Raspberry Pi 4b's running bookworm with all updates. Something is wrong with the WiFi connection. I can browse the internet but when I try to ping one from the other or vice versa, it just ...
ole_thor's user avatar
0 votes
0 answers
41 views

Investigating Random Crashes/Reboots - RaspberryPi 3B

We have a Raspberry Pi 3B running a custom Buster image (PiSignage 3.2.0 - Its for digital signage). I have recently noticed that the Pi has been crashing periodically and my troubleshooting knowledge ...
DOSed_And_Confused's user avatar
1 vote
0 answers
159 views

Running Multiple RTL-SDR Applications using a Single Dongle

I want to run two applications in my Raspberry Pi (model B): Weather stellite tracking; Airplane tracking with dump1090. I have installed the RTL software and scripts from this tutorial for the ...
AW Exchanger's user avatar
1 vote
1 answer
214 views

Zero W2 stopped working unable to ssh or ping

Overnight my pi-hole disappeared, it had been running fine for months, then one morning... gone, I've been unable to ping the Raspberry Pi Zero or ssh to it. It has a fixed IP, assigned by the router ...
Simon Martin's user avatar
0 votes
1 answer
142 views

gpiozero's wait for release not working as it should

I'm trying to build a program that has 2 inputs connected to 2 limit switches and each of these needs to be first opened and then closed before the function respective to each button begins. As a ...
user20546541's user avatar
1 vote
0 answers
20 views

Remember site permissions

I have a javascript page on a website that needs access to a USB port on the PI. When I open the page I can grant permission to the site to access the USB port. But the browser does not remember that ...
Eamon's user avatar
  • 11
1 vote
1 answer
455 views

missing libusb-1.x to install openOcd to use picoprobe

I am trying to set up a picoprobe in order to program my rp pico using only wires (using another rp pico). I am following these instructions in Appendix A. I have windows 11 at the moment. When i try ...
MIKE PAPADAKIS's user avatar
-1 votes
1 answer
189 views

Program to test i2c communication with serial prints breaks RP pico

Background: I am trying to test the communication of 2 raspberry pi pico using i2c. Firstly, i sent a string from one and receive it from the second one. Both of them print the results in the serial ...
MIKE PAPADAKIS's user avatar
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0 answers
31 views

5-second increment pauses on Pi Zero W

I've recently set up a Pi Zero W with the as-of-writing most recent Pi OS Lite image. It is connected to my home network via Ethernet and has Pi-hole installed on it. I found that during setup and, ...
Nightfirecat's user avatar
1 vote
1 answer
45 views

Camera module survivability questions

I have a camera module which was working fine without the two infrared (IR) lights: . Today, I decided to place on the IR lights: turned off Pi attached the lights and rescrewed the camera on its ...
Konstantinos's user avatar
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0 answers
277 views

Raspberry PI 4 Chia Farm 20 HDD 2 USB Hubs

I have a huge problem. I have 20 HDD and 2 usb 16slot hubs. And if I connect the two hubs than everything is fine and works fine if the total number of hdd is over 19 rasbian OS 64 bit disconnects all ...
Simon Gruber's user avatar
0 votes
1 answer
389 views

Pi4 won't boot - 3 long / 3 short green flashes

My Pi4B wouldn't boot up the other day and have been trying many different things with no luck. I have everything unplugged from it except the official power supply. With or without the SD card ...
DaveInPA's user avatar
0 votes
1 answer
75 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 ...
Barry Martin's user avatar
0 votes
1 answer
817 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....
blubbafett's user avatar
0 votes
2 answers
44 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 ...
forestDM's user avatar
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0 answers
75 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 ...
ikekweref's user avatar
0 votes
1 answer
694 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 ...
Miu Catalin's user avatar
0 votes
0 answers
398 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 ...
ScienceDiscoverer's user avatar
1 vote
1 answer
1k 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 ...
Korbendallaz's user avatar
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0 answers
56 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 ...
Orlando Alexander's user avatar
0 votes
0 answers
416 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 ...
alessandro's user avatar
1 vote
1 answer
361 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 ...
Mat.C's user avatar
  • 111
1 vote
0 answers
242 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. ...
user126210's user avatar
1 vote
0 answers
567 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 ...
tombomlom's user avatar
0 votes
1 answer
225 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? ...
Bram's user avatar
  • 172
-1 votes
1 answer
366 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 ...
Fenderbridge's user avatar
1 vote
0 answers
1k 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 ...
Sohan Arafat's user avatar
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1 vote
3 answers
433 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 ...
ParaPsychic's user avatar
1 vote
1 answer
485 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 ...
RLahey's user avatar
  • 19
0 votes
1 answer
2k 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, ...
Matt's user avatar
  • 111
1 vote
0 answers
244 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 ...
Spencer Trinh's user avatar
2 votes
1 answer
51 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 ...
Tmello225's user avatar
1 vote
0 answers
782 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 ...
THX1182's user avatar
  • 11
4 votes
2 answers
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 ...
ralien's user avatar
  • 143
0 votes
0 answers
37 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 ...
Ahmed Magdy's user avatar
-1 votes
1 answer
144 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 ...
Honza Zednicek's user avatar
0 votes
0 answers
160 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 ...
rpseu's user avatar
  • 357
2 votes
0 answers
294 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 ...
Doctor Kurt's user avatar
-1 votes
1 answer
48 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 ...
Pradhyumna Narain's user avatar
1 vote
0 answers
47 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. ...
user avatar
0 votes
0 answers
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 ...
Lucen Dacier's user avatar
2 votes
1 answer
32k 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 ...
Andrew Gessel's user avatar
1 vote
2 answers
100 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'...
Steji's user avatar
  • 141
3 votes
1 answer
4k 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 ...
user9888433's user avatar
0 votes
0 answers
354 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, ...
dhruvvyas90's user avatar
  • 2,853
0 votes
2 answers
737 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!) ...
powerpete's user avatar
  • 159