Questions tagged [troubleshooting]
Referring to troubleshooting (a form of problem solving) issues with the Pi or related to the Pi.
66
questions
1
vote
2answers
37 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 ...
1
vote
1answer
42 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 ...
0
votes
1answer
68 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, ...
1
vote
0answers
49 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 ...
2
votes
1answer
34 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 ...
0
votes
0answers
257 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 ...
4
votes
2answers
842 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 ...
0
votes
0answers
30 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 ...
0
votes
1answer
65 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 ...
0
votes
0answers
46 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 ...
2
votes
0answers
62 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 ...
-1
votes
1answer
41 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 ...
1
vote
0answers
39 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.
...
1
vote
1answer
53 views
raspberry pi dies when I connect UB wifi adapter
I bought an USB wifi dongle recently and I want to connect it to my Raspberry Pi. When I connect USB wifi to Raspberry Pi, it seemingly dies - the SSH connection dies and I can't ping it (I don't ...
0
votes
0answers
35 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 ...
2
votes
1answer
14k 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 ...
1
vote
2answers
40 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'...
2
votes
1answer
1k 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 ...
0
votes
0answers
162 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, ...
0
votes
2answers
148 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!) ...
1
vote
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 ...
1
vote
3answers
514 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 ...
1
vote
2answers
797 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 ...
0
votes
0answers
303 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-...
0
votes
1answer
124 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 ...
1
vote
1answer
897 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. ...
1
vote
0answers
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?
0
votes
0answers
425 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 ...
-1
votes
1answer
188 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 ...
0
votes
2answers
26 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 ...
1
vote
0answers
429 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 ...
1
vote
1answer
377 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]...
1
vote
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 ...
1
vote
2answers
53 views
Monitor goes black when unplugging the ethernet cable
My Raspberry Pi B+ is working well except: the HDMI only seems to work if the ethernet cable is plugged in. If I remove the ethernet cable the monitor goes black. I plug the cable back in - monitor ...
2
votes
1answer
484 views
Accidentally shorted C97 on the Raspberry Pi with a washer
I accidentally dropped a washer and unfortunately it landed on the C97 capacitor. I think that shorted the pi out. The ACT and PWR lights are now solid red and green, whereas it was blinking ...
0
votes
1answer
7k views
(python 3) Auto-Conversion from .h264 to .mp4 [closed]
I have a Python 3 code that is supposed to record video. Unfortunately, I do not ant it in .h264, I need it to convert to .mp4. I thought the easiest way to do this would have been to use subprocess....
1
vote
2answers
3k views
Can't connect through PuTTY
I'm going crazy trying to connect to my Pi through PuTTY. I know I have SSH enabled, I checked the ports, used ifconfig and put in every single IP address I saw in there, used hostname -I, and they ...
1
vote
1answer
465 views
Pi appears as offline according to Xfinity router even though it IS connected
I'm SSH-ing into a Pi right now, so it is definitely connected to the network. It is connected via Ethernet. The Pi is running default Raspbian. Other Wi-Fi and Ethernet devices that are connected ...
1
vote
0answers
536 views
Raspberry Pi 3 stopped working
My Raspberry Pi 3 suddenly stopped working only the red light led is on and nothing happens. I suspected the SD card so I swapped in another with only NOOBS on it and it worked once and not again. I ...
0
votes
1answer
712 views
Pi 3 Xorg.cond.d missing and need to swap the axis for the eGalax USB touchscreen
I have a problem: xinput_calibrator doesn't work properly. After I touch 4 points my touchscreen's X and Y axis stay swapped. And I can not apply changes manually in the Xorg.conf.d directory because ...
3
votes
1answer
333 views
I got my first Raspberry Pi. So how do I turn it on?
I feel stupid asking the question: I've been looking for an answer for half an hour, but it seems that anybody else have figured it out.
I've got my first Raspberry Pi 3 model B. I followed the ...
1
vote
2answers
2k views
RPI 3 Firefox Video plays but Sound is loud hiss
In the latest version of Raspbian (kernel 4.4), any file I stream through youtube-dl to omxplayer or mplayer using the 3.5mm headphone jack works perfectly.
However, in Firefox when I go to any site,...
0
votes
2answers
3k views
Php not working with nginx
So I tried following this guide, but seems to fail at this step. When accessing the /index.php my browser(both chromium and firefox) downloaded the page as a file, then I decided to delete the file ...
4
votes
2answers
2k views
Official Touchscreen Backlight Inconsistent Control
I am running Raspbian Jessie Lite with a custom Xfce4 Desktop Environment installed. I created a file which when run, changes the number in /sys/class/backlight/rpi_backlight/bl_power to 0 or 1 ...
0
votes
1answer
468 views
RPi.GPIO not working at all
I have just started with the GPIO on my raspberry pi but can't get any of the code to work.
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(18,GPIO.OUT)
...
0
votes
2answers
423 views
Have I destroyed USB power? Ethernet & USB devices powering on & off constantly unless keyboard connected
I have a rather strange problem. If I boot my Pi with only power, HDMI & and ethernet cable plugged in, the ethernet port and other USB devices will flash on (i.e. the ethernet lights and LEDs on ...
0
votes
1answer
155 views
Trouble shooting on RPI 3 under Raspbian Jessie (set by NOOBS)
I had to reboot my RPI when my web server was working.
And the RPI can't reload on my Desktop after this reboot;
a black page appears at each time.
So i have tried some button press and when I do Alt+...
0
votes
2answers
443 views
Raspberry Pi won't boot up after installing Adafruit's Jessie PiTFT image
I am trying to have my Raspberry Pi 3 work with an Adafruit TFT. I installed their Jessie based image (http://learn.adafruit.com/adafruit-pitft-3-dot-5-touch-screen-for-raspberry-pi/easy-install), ...
1
vote
0answers
142 views
Routing problem
I'm searching for a solution for what I consider a simple routing problem but I can't get my head around it. It's about 3 pi's. The first one works as an accesspoint (I call it #1), the second one ...
3
votes
2answers
15k views
Consistent Corruption of SD Card
I have been using a Micro SD card that has been getting corrupted very frequently. I tested it with the badblocks command on another Linux box and it said there were 0 errors. I also checked it with ...
