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Questions tagged [linux]

Linux is a high-profile computer operating system. The Raspberry Pi can run one of a number of Linux distributions, the most pupular being Raspbian (Debian-based) and Arch Linux.

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Is it possible for Raspberry Pi to update database on Android and Firebase/AWS through Bluetooth?

This is for a school project. The idea is that the Pi (with sensors) will collect data, and store them temporarily on the Pi. Once the Pi is paired via Bluetooth, it will send the data to the phone, ...
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1answer
4k views

Midori FullScreen mode on boot

I have setup my Raspberry Pi 3 with Midori, X11-Server, Unclutter and Matchbox. Created a small bash script that will run midori in full screen mode that is fairly like this one: #!/bin/sh ...
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1answer
206 views

Can't get past rainbow screen with Kali install process

I am new (to all of this, Pis, Linux, etc). This is my first real attempt at working directly with hardware as well. I needed a new project so I got a Canakit started set which came with a Raspi 3B+,...
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2answers
33 views

Raspberry Pi batman-adv ad-hoc network setup unreliability

Problem: I am trying to configure batman-adv network on raspberry pi 3b+ following this, using on-board wlan0 interface coming with raspberry pi 3b+. Once the network is executed by following all ...
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1answer
215 views

Install Emotiv Xavier Control Panel on Raspberry Pi3 / Raspbian Stretch

I want to install Emotive Xavier Control Panel on a Raspberry Pi3, running Raspbian Sretch. A version exists for Ubuntu Linux. Can I install this on my Pi?
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0answers
9 views

Multiple delayed output from pi camera

I’m trying to create up to 4 delayed outputs from the pi camera. The length of the delay needs to be varied 15-60 seconds. Is there a way to buffer the cameras feed and use the same buffer for all the ...
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1answer
244 views

Unable to connect wifi in Raspberry Pi 3 and os design for navio

The link below shows the images of the output error, i`ve been working this for hours I follow instructions from here but still doesnt work . Hoping that someone would help me figure out the problem , ...
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1answer
316 views

eth0 prioritize over wlan0, although it has no internet access

My pi is connected to my home router using wlan0, and have access to internet successfully When I plug my pi with an Ethernet cable, connected to other router, not connected to internet, I cant ping ...
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1answer
249 views

Change FIFO pipe buffer size in Debian?

I'm on the latest Raspbian Jessie. I'd like to increase the size of an open FIFO pipe buffer. I've already upped the max size via sudo sysctl fs.pipe-max-size=4194304 Then I'm attempting the ...
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0answers
18 views

Problem with interfacing ds18b20 and mcp3208 simultaneously

In my project i am trying to interface both DS18b20 and MCP3208. When i interface both any one interface only working but not both(spi and 1-wire) not working simultaneously. For ds18b20 i am using ...
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1answer
28 views

Only allow a specific peripheral to be connected to a USB port

I am turning my raspberry pi prototype device into a market product. The data and the program running on the pi must be protected. But we have a USB webcam attached to it (provided by us, hence we ...
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0answers
8 views

ProxyCommand Settings Absible

ip_bastion_host=`tail -n +2 file | awk '($6) {print $5};'` vpc=10.0.* echo """ Host $ip_bastion_host User $ssh_name IdentityFile ~/.ssh/gcloudssh Host 10.0.* User $ssh_name ...
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1answer
41 views

Terminal and program run on boot-up

I am trying to find a way to open a terminal and run a program on boot using Raspberry Pi's newest Raspbian Jessie. I have tried to use the following: /home/pi/.config/autostart/whatever.desktop [...
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2answers
375 views

Yocto build on Raspberry Pi3 stuck on Rainbow screen

I am trying to learn about Yocto Project on my Raspberry Pi3 board. I have followed the steps mentioned in this link to build the Yocto image. I am behind a firewall, so I have changed the git.py ...
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0answers
44 views

Raspberry Pi jammed after few days of continuous work? size full?

I made a project on raspberry pi 3+ and left it on over a weekend. After 4 days, when I came back, the program was not working. When I try to connect it with Remote Desktop, it was not working. I ...
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2answers
5k views

Xlib: extension “RANDR” missing on display “:1.0”

I'm trying to run openvibe-designer on my raspberry pie over vnc. Currently I am using Xvnc version TightVNC-1.3.9. All other applications that I've launched over vnc have worked. I only get this ...
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1answer
1k views

Trying to run plex media server on Raspberry Pi

Hi I'm trying to run Plex on my Raspberry Pi 1st gen rev B, but it does not seem to be starting. I have followed this guide and looked at others that look the same and can't see what the issue is. It ...
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1answer
692 views

Read-only SD card and file system in RAM

There are number of articles about mounting SD card read-only, but I only found info, that if needed to write something, first of all you have to remount file system as readwrite. My question is there ...
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1answer
149 views

What OS version is installed

Users often seem confused about what Pi model they have and what OS version is installed or how to find details. Where is this located?
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0answers
45 views

Calling a program from /etc/rc.local

I have a simple script that adjusts the monitor's brightness that is set to run on startup. #!/bin/bash gpio -g 18 1024 gpio -g mode pwm gpio pwmc 1000 gpio -g 18 800 I am calling this script from /...
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0answers
17 views

How to connect Solenoid Lock to Raspberry Pi 3

Here is the scenario: (We also have camera) Here is the link for solenoid lock: click here When we run the our python code, camera will take an picture of QR code and it can get the QR code content ...
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3answers
11k views

Raspberry Pi USB 3 HAT or alternatives

I am looking for a cheap way to utilize USB 3.0 speeds for my external peripherals. The latest Pi 3 model B still has USB 2.0 ports and from what I have read, until USB 3.0 prices fall, it will be a ...
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1answer
3k views

How to disable wireless AP on RaZberry

I'm trying to set up a home automation system using a Raspberry Pi 3 (with a RaZberry 2 Z-Wave controller) and the Z-Way Z-Wave Controller. I've set up my Pi with a complete SD card image, as ...
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4answers
2k views

Encrypt specific directory on raspberry pi

After hard searching for a way to protect my python code on raspberry pi from strangers access, finally, I'm convinced with all answers I read "No Way to protect python code". But I still searching ...
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0answers
18 views

arecord only works with -D

Long story short, my mic was working fine yesterday. I then had a pair of USB speakers connected and then again disconnected. And now I cannot get the little thing to do a arecord with using the "-D" ...
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1answer
1k views

Howto prepare a SD card from a tar archive

For testing various setups I feel it more comfortable to use tar archives instead of images. You only save programs and data, no need to fiddle with nullbytes to optimize compression or shrink ...
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1answer
2k views

FS80H USB Fingerprint Scanner in Pi 3

I have a Futronic (model FS80H) USB fingerprint scanner. I am currently trying to get it to work with a Raspberry Pi. On their website they mention that on Linux it doesn't use any kernel mode ...
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2answers
10k views

Sudo has stopped working : sudo: error in /etc/sudo.conf, line 0 while loading plugin `sudoers_policy'

I have a weird issue with my Raspberry pi - sudo has stopped working. Every time I try to run a command using sudo, i get this: sudo: error in /etc/sudo.conf, line 0 while loading plugin `...
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3answers
664 views

rpi 3 : combine wifi and ethernet networks

What I need: local Router --> RPI 3 <-- wifi Router local Router provides dynamic IP by Ethernet cable, but this is a local network, closed from global network. wifi Router (smartphone, or any ...
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3answers
2k views

Configure Rpi 3 for ethernet router with jessie

I am configuring my Rpi 3 as ethernet router. I have used dnsmasq for configuring dns and dhcp server. The configuration files are given below. /etc/network/interfaces auto lo iface lo inet loopback ...
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1answer
443 views

How to see debug logs from Raspberry Pi 3 during boot process?

I am currently trying to debug a "black screen" on a Raspberry Pi. The Pi is plugged to an in-house PCB using connector of the Pi and the LCD screen is connected on this in-house board. The Linux ...
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1answer
908 views

Connect external hdd ExFat

I'm trying to connect my external hdd which is in ExFat, but it won't mount it. I've got "fuse:device not found", but if i do fdisk -l, I can see it. Can someone know how to fit it ? Or if you have ...
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2answers
1k views

Raspbian Jessie apt-get update fails ERROR: Hash Sum mismatch

Please find the attached snip, for the complete error message. This is the second time I've faced this issue, last time it happened I tried couple of different things updating source list file or apt-...
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2answers
7k views

What is /dev/vchiq in Raspberry Pi?

I am using Raspberry Pi 3 and raspbian jessie and i came across /dev/vchiq by trying to call program (omxplayer) with perg-cgi which would play some music on my RiPi. And i coudn't get it to work. ...
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1answer
1k views

How to change default apache folder to Flash drive on Raspbian?

I have apache 2.4 on my raspberry pi and need to change DocumentRoot to flash drive folder. But I have 403 Forbidden. In apache logs: AH01630: client denied by server configuration: /media/pi/www/...
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1answer
2k views

Raspberry Pi 3 BLE scanning failure

I am trying to implement the next code to scan for BLE devices: #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/socket.h> #include <bluetooth/...
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1answer
1k views

How to solve blank screen issue on Raspberry Pi GUI?

It's my third day with my Raspberry Pi. I do know Linux. I am all good with using SSH with my Raspberry Pi but I do need a GUI sometimes. I tried installing vncserver, tightvncserver and now xrdp but ...
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1answer
3k views

Scan Distance from Eddystone Beacons

I would like to read an Eddystone Beacon using my Raspberry Pi 3 to calculate distance from the beacon. I can't find any resources to do this from the official Eddystone documentation. How should I go ...
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1answer
49 views

Configure pi so it doesn't show boot info - splash screen only

I'd like to configure my pi 2 so that I dont see any booting info. I'd like to have a splash screen (or video if thats even possible) and boot into a C++ game I wrote.
3
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2answers
1k views

Setting up ad-hoc wireless

I have pi 'A' setup to be an adhoc network and using dhcp3-server. /etc/network/interfaces auto lo iface lo inet loopback iface eth0 inet dhcp auto wlan0 iface wlan0 inet static address 10.10.1.1 ...
3
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1answer
5k views

Raspberry Pi install screen - Internal Error, ordering was unable to handle the media swap

I am trying to install screen in my Raspberry Pi. If I run sudo apt-get install screen, I get the following error: E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?...
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1answer
619 views

Electron app just shows blank white screen on a Raspberry Pi

I am trying to load a program on an ARM machine which I was running on a Linux on an x86 machine. The program loads but just with a white screen. The program was developed using electron and when I ...
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1answer
2k views

How to: run .sh script with rc.local

I have the following: server pi and client pi both running latest update version Raspbian Stretch I have a .sh script on the client pi to update the time from my server pi. When I run this manually ...
0
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1answer
539 views

shell script not working in crontab but works manually

I am using crontab to open an image at every minute using a shell script. My script is working if I run it manually. But it is not executing in crontab. I have another script running well in crontab ...
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2answers
973 views

Can I install Edubuntu onto Pi?

How can I install Edubuntu onto Pi without using a server or a windows/mac OS? I have tried a lot of different things and I cant seem to find anything on youtube to help me with installing this OS ...
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4answers
399 views

dd for image backup

My SD card corrupted itself but I have a back up image. The partition table leave 1GB unallocated space at the end so that I can restore to any 8GB memory card regardless of memory fluctuations. ...
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1answer
415 views

Can not use GPIO pins when Official Raspberry Pi screen is connected

I have a Raspberry Pi2 B+ model, with noobs distro installed. I had some programs using wiringPi library and an ultrasound component working (tested them using a separate monitor via HDMI). However, ...
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1answer
587 views

Connect Pi3 to Windows/Linux via wifi direct?

I'm building something that needs to connect to a Pi3 wirelessly but there won't always be a wifi network for them to talk over. So I was hoping to use wifi direct to get them to talk directly. So ...
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1answer
29 views

How do i create a raspbian sdcard with existing rootfs and boot folders?

I have a copy of rootfs and boot folders of a raspbian installation sent to me in via dropbox. How do i take a new sdcard and create from it a bootable raspbian? Also: the folders are in an archive ...
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0answers
69 views

Ubuntu, Firefox can access internet, but terminal can't

I'm connected to university router, and I know they have many restrictions, but firefox is accessing the repo links without any issue, but the terminal can't. How can I make the terminal use the same ...