Questions tagged [linux]

Linux is a contemporary multi purpose operating system. The Raspberry Pi can run one of a number of Linux distributions, the most popular being the official "Raspberry Pi OS" (formerly Raspbian).

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How to configure GPU with Debian 11 and Raspberry Pi4 B?

I am trying to get the GPU acceleration work for X and Firefox but no dice. uname -a Linux rpi4-2.lan 5.10.0-5-arm64 #1 SMP Debian 5.10.24-1 (2021-03-19) aarch64 GNU/Linux xorg/testing,now 1:7.7+22 ...
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20 views

How to monitor wifi network connection from raspi to linux PC

I have several raspberry pi CM 3B+ in a custom device. I use USB dongle as wifi adapter. After some time passed, the connection became unstable and it often cannot even reconnect and need to be ...
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Buildroot minimal OS for raspberry pi zero w and motion [closed]

At the moment, I am using MotionEyeOS for a hobby project. However, it contains a lot of modules that I do not want or need so I am trying to create a more minimal OS using Buildroot to give myself ...
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How to integrate a MQTT broker into Linux based raspbian kernel source code and cross compile in Ubuntu 20.04.2?

I’m trying to integrate a MQTT broker into Linux based raspbian kernel source code, which I cloned from https://github.com/raspberrypi/linux/tree/rpi-5.4.y. I need to integrate the mqtt broker and ...
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1answer
41 views

Kali Linux on Raspberry Pi4 with touchscreen LCD display is not booting with GUI

I have successfully installed latest kali Linux image for rpi4 available on offensive security website. Its 2020.1. I have also configured the display with kalipi-tft-config command but on reboot, no ...
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10 views

open and close different video players in loop

here is the overall flow of what i am trying to execute: when the system boots up, open a video in full screen mode and run a python3 script in background. the python3 script is a script to receive ...
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1answer
36 views

Is ubuntu 20.04 compatible with raspberry pi 400?

I use a usb 3.0 for mass storage (with boot). But my OS (ubuntu 20.04) is very slow. What can I do to make it faster ? (I'm on raspberry pi 400)
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27 views

Redirecting log entries - where have I gone wrong

On a Pi Zero, I have two python scripts set up as systemd services. Each has a .service file in /etc/systemd/system. Each has a .conf file in /etc/rsyslog.d that is intended to redirect syslog ...
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1answer
45 views

NTP not syncing

I need some help regarding the NTP daemon. I have problem to make ntpd sync with any external NTP servers. Raspberry IP is 192.168.10 (eth0). To simplify troubleshooting I am using the default ...
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29 views

Raspberry Pi 4 as a second screen for Linux

I have a Manjaro Linux PC and I don't have HDMI output on it but I have a RPi4 connected to my second screen. Do you know any way to use my Raspberry Pi to output video to the screen ? Both devices ...
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54 views

Error when trying to run python scripts

I've been trying for a while now to run python scripts and everytime i try i get an error saying some package is missing. My conda environment path is set to: root /home/pi/miniconda3 where root is ...
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Connect my Raspberry Pi, running an OpenVPN server with clients, to an external VPN Server

I want to connect my Raspberry Pi with OpenVPN Server on it to an external VPN Server, such that all (outgoing) traffic of the connected clients to my RPi going through my server is tunneled through ...
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45 views

Gstreamer: Stream low latency video from Raspberry Pi (Tx) to Raspberry Pi (Rx) [closed]

Goal I'm working on a project with modules. A module contains for example a Raspberry Pi and some additional hardware. What I'm currently trying to do is using the camera of Pi A as input and stream ...
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46 views

USB Button with LED

I need for my raspberry a USB connected device like a button that can be color illuminated and can be pressed. I want to use it to trigger at my raspberry certain actions in sw. I fond this https://...
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62 views

usb3 to hdmi on linux - why can my chromebox do it, but my ras pi can't?

i should mention I'm a linux newb. I only use dumb redhat servers at work (barely) but hate windows so much i've got a chromebox and ras pi 4 to try to free myself. and my apps. i've found that ...
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72 views

Make external bootable disk for Raspberry Pi from bootable SD card

I would like to migrate my Raspberry Pi OS from SD card to external disk. In various posts I have read that Raspberry Pi 3 and 4 should support it out of the box. However, when I just dd disk image ...
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20 views

When should something be registered as a service?

I've red a few tutorials on how to set P2P clients up, specifically Deluge. For some reason all of them say to register it as a service. Why is this? I've just been starting it manually in the ...
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26 views

No camera preview

I have a problem, when I write the command "raspistill -o desktop/image.jpg" in the terminal there is no output. How can I solve this problem is urgent... and btw the Geany programming ...
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34 views

Limit size of directory in Unix

I am using my raspberry pi 4 with raspbian to host server. I have written some code that makes backups of the server data and I upload these to google drive using rclone. The problem is that I only ...
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14 views

When building a kernel from source, what is the KERNEL environment variable used for?

When building the Linux kernel from source for an RPi3, the official documentation recommends setting the KERNEL environment var to kernel7 (as opposed to kernel or kernel7l). What does this ...
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62 views

How can I restore my raspberry pi sources list

I changed something then I brick rpi. I changed sources.list and raspi.list then If I sudo apt update I am taking this error: E: Malformed entry 1 in list file /etc/apt/sources.list (Suite) E: The ...
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103 views

Linux, python, Bluez, Bluetooth libraries, UUIDs, and handles

I am using the python library pygatt to talk to govee bluetooth bulbs, and it is working fine, for only 1 bulb. The problem with it is that it won't allow more than one connection at a time since it ...
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889 views

ufw Error: Couldn't determine iptables version [closed]

I am currently working on an automated shell setup script for my Raspberry Pi 4. This includes installing and setting up ufw as my firewall. However, I'm currently stuck with configuring ufw. My ...
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1answer
83 views

Raspberry pi won't connect to hidden network

I have a raspberry pi 4 running raspberry pi os lite(headless). I have a wifi dongle attached to the pi for a better wifi signal (wlan1) as the built-in one was giving me issues, but I couldn't get ...
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2answers
174 views

Good KDE distros for RP4?

I’m looking to work with a KDE distro on my RP4. I’m most familiar with the Ubuntu family but it doesn’t seem Kubuntu has an ARM image. Fedora has a KDE spin but not sure I want to go that route just ...
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464 views

How to install package from github

I need to install this package from github: https://github.com/vrai/fdspatch It is said to run on linux but it does not say specifically how to install. Can anyone tell me what commands I need to run? ...
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2answers
84 views

How to develop for raspberry pi without actually owning one

I need to run a low level code (thread protected circular buffer written in rust without using environment provided tools like mutexes nor semaphores...) on ARM based processors. The teacher was ...
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1answer
524 views

dphys swapfile error while updating

So I recently got a new raspberry pi 4 and I went to update it and ran the following commands: sudo apt-get update and sudo apt-get upgrade. The update command ran perfectly fine but when I ran ...
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45 views

Can keyes Sound sensor be used as a Microphone in Raspberry pi?

I am trying to make a speech recognition system on a Raspberry Pi 3 model B+ using Python. It needs a microphone. I have the keyes Sound sensor which looks like this(https://cutt.ly/Jjp9jWP). Can this ...
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173 views

Problem with USB RFID Reader and Raspberry pi 4

Firstly I'm just a beginner trying to get into pi world so my knowledge is minimal at this point. I'm trying to make USB RFID card reader work on raspberry like it works on my Windows pc, imitate ...
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70 views

How do you encrypt SWAP on Raspberry Pi OS?

I followed the instructions at Transparent Encryption For a User's Home Folder to encrypt my home folder. It all worked except the last command: sudo ecryptfs-setup-swap returned: Unknown device &...
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50 views

Pymodbus rtu (RS-485) reading issue in raspberry pi with baudrate 19200

I am using pymodbus on raspberry Pi 3B. Slaves are connected via RS-485 on ttyUSB* ports. I am able to connect and read modbus registers perfectly from the slave which has 9600 baudrate. When I ...
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1answer
78 views

Connecting to work VPN on Raspberry PI need help

I need to connect to work VPN on my raspberry PI. I have been given ID, Password and server. Using Kerio Control VPN software on my windows machine to connect to the VPN. I cannot figure out how can I ...
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1answer
185 views

Building kernel for raspberry pi 4 b on a host machine(ubuntu 18.04)

I am new to linux and I really need your help I am working on project for my end of studies internship : controlling sensors and displaying the result on an LCD screen for that I will use raspberry ...
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1answer
63 views

Can I somehow install an OS on my Raspberry Pi rather than “burning it onto the card”? [closed]

I have experimented a lot with my Raspberry Pi over the years since I got it. Mostly, however, it has spent its time collecting dust in the wardrobe, because I always run into show-stopping issues ...
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2answers
111 views

Writing to framebuffer on C is very slow (Raspberry Pi)

I want to make a very intensive simulation and need the most power the Raspberry Pi gives me. So I flashed Raspberry Pi OS Lite (without Desktop) onto an Micro SD Card and wrote to the framebuffer in ...
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13 views

Yocto linux on rpi 3b+, bootup issue. mmc1 is not getting hardware interrupt

I tried to bootup rpi 3b+ with yocto-linux(kernel v4.19)(console image) but its not booting up. I suspect its something related to i2c or interrupt. Note : I have taken care of device tree and overlay....
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49 views

Can preserve LVM partitions while changing sd card and os?

I want to make a NAS storage with Raspberry Pi and attached drive. I would like to create partitions on my drive with LVM, but I'm afraid, that once my sd card with os breaks, I will lose my all data, ...
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911 views

spi-bcm2835 fe204000.spi: could not get clk: -517

I'm using Ubuntu Server 20.04 on a Raspberry Pi 4 8GB and shut it down normally yesterday it just says this error on screen when starting the kernel spi-bcm2835 fe204000.spi: could not get clk: -517. ...
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1answer
155 views

RHELP on a Raspberry Pi 4 Model B

Is it possible to install Red Hat Enterprise Linux on a Raspberry Pi 4 Model B? The model B's OS is on an SD Card. Can I just take this out and install the RHEL on a new SD card? Has anyone done this? ...
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164 views

connect raspberry pi to fax machine

I want to connect raspberry to fax machine , because I want cypher message before transmit via landline phone . how can do it , how can interface between rasp and fax machine ?
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1answer
37 views

Raspberry Pi POCSAG mail script

I have a raspberry pi configured as a POCSAG receiver with a RTL-SDR USB stick. Everything works just perfect, and it receives signals and messages. I then found a script that was supposed to be able ...
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1answer
43 views

Measure FPS of Application in console mode

I am comparing two applications and therefore need to know which fps a raspberry can produce when you run it. I am looking for a method to do this. It does not matter if it is an overlay or a simple ...
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261 views

Any recent success installing and using slic3r on raspberry pi

I have a 3d printer and two raspberry pis. I use one as my main desktop computer and the other I keep plugged in to the 3d printer, running octopi. I am a newbie to 3d printing. I have STL files but I ...
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1answer
29 views

Is local video streaming site possible?

I'm not familiar with Raspberry Pi and I just want to ask if my idea is possible. I am planning to install Ubuntu and Python 3. I will put all videos in a hard drive, connect it to the raspberry pi, ...
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32 views

what is /opt/UEZi5lcy service? [duplicate]

I found this strange service inside /etc/rc.local. I have never put it there and it replaced every line that i wrote. What is this service? I noticed it because it uses 5% of my CPU #!/bin/sh -e /opt/...
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2answers
416 views

Is Raspbian LINUX?

I'm new to Raspberry pi and there is this one thing that is confusing me. What is the difference between LINUX and Raspbian? Is Raspbian build over LINUX, like the core or the basic layer is LINUX and ...
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207 views

“wlan0: carrier lost” untimtly WiFi deconection on raspberry pi 3b+ and pi0 W

I am facing this bug since few days. I am using: Rpi 3b+ or Rpi0W, Buster-lite with last update, Kernel : 4.19.118+ I using Ubiquti WiFi AP and dnsmasq for managing the lan, both working normally with ...
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2answers
162 views

How can I delete Chromium browser history at boot up on Raspberry Pi-4 b

Playing the online game, Forge of Empires, I get the notice to clear cache. This is run in Chromium Browser on my Raspberry Pi 4 b 4Gb running Raspberry OS 32 bit.
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1answer
908 views

Raspberry Pi 4 unable to run aarch64 binary with aarch64 kernel

I followed this instruction to enable 64 bit kernel. https://www.raspberrypi.org/forums/viewtopic.php?t=250730 And I am pretty sure now my kernel is 64 bit. $ uname -a Linux RPi4 5.4.51-v8+ #1327 SMP ...

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