Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.

0
votes
0answers
4 views

can't read files of a ext4 USB stick on Windows

I setup a USB stick like this: lsblk sudo fdisk /dev/sda o n w sudo fdisk -l /dev/sda sudo mkfs.ext4 -L mystick /dev/sda1 sudo mkdir /home/pi/Desktop/mystick sudo mount -L mystick /home/pi/Desktop/...
0
votes
2answers
2k 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-...
1
vote
2answers
19 views

No /etc-Folder in .img-File

I made an IMG-File of my LibreELEC and now i want to edit it on my Windows machine. I need to make changes in the /etc-Folder and I can't do that live on the system since LibreELEC is read-only FS. ...
0
votes
1answer
258 views

“No wireless interfaces found”

I accidentally ran the code on my terminal: sudo airmon-ng check kill Now when I try to connect to a wi-fi it says "No wireless interfaces found" I tried to edit /etc/network/interfaces but ...
1
vote
1answer
34 views

How to control the Bit Rate (mbps) of a Raspberry Pi Access Point

I have two "Raspberry Pi 3 B+" boards which are required to be connected. One Raspberry Pi is configured as Access Point (AP) and the other one is just a Client. When both are connected, I write the ...
0
votes
1answer
279 views

Tkinter application window in front of Chromium in Kiosk mode

On my Raspberry Pi I have created a tkinter application with one button and configured Chromium to start in kiosk mode. In my python application I set the following: root.lift() root.wm_attributes("...
1
vote
2answers
24 views

How to enable an addtional font in Libreoffice on the Raspberry Pi?

My goal is to use the font "Courier 10 Pitch" in Libreoffice on Raspbian Stretch on the Raspberry Pi 3B. At the raspi terminal, there is currently the following input and output: pi@raspberrypi:~ $ ...
2
votes
1answer
233 views

Ideas on why my app won't run on Yocto RPi system?

I've built a custom 32-bit non-GUI Raspberry Pi image using Yocto (Morty), built the corresponding SDK, and used the SDK's toolchain to build an app. When I run the app on the RPi, from a command ...
2
votes
1answer
32 views

Investigation - pi's password is lost in every reboot issue

I'm investigating this issue: pi's password is lost in every reboot. Issue summary: Change pi's password by passwd command -> reboot -> the changed password always will be changed to another which we ...
1
vote
1answer
377 views

Raspberry Pi 3 Model B- 3M Touch Systems

I connected yesterday a Raspberry Pi 3 Model B at a 3M touch Systems touchscreen. For installing I followed this tutorial that I found here: Inverted GPIO Touchscreen (Using 99-calibration.conf) What ...
0
votes
0answers
14 views

RPi application with a Linux server [on hold]

I have this application using an RPi, servo, camera, and some LEDs to simulate the function of a parking lot garage and it works just fine: It is a sort of smart garage where you have to write ...
0
votes
1answer
27 views

Using cgroup module in iptables cause “no chain by that name” error message

Trying to use cgroup module in iptables rule cause "No chain/target/match by that name" message. I'm using: Linux raspberrypi 4.19.42-v7+ #1219 SMP Tue May 14 21:20:58 BST 2019 armv7l GNU/Linux ...
0
votes
1answer
245 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+,...
0
votes
1answer
259 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?
1
vote
1answer
27 views

Earliest place in boot for output to I2C LCD (not HDMI)

We're using an embedded Raspberry Pi that uses a (I2C) 4x20 LCD (character) instead of HDMI. Since the boot process can take some time I'd like to get something on the LCD as soon as possible to say ...
4
votes
3answers
14k views

Installing Raspberry Pi Cross-Compiler

I am attempting to get cross-compiling for Raspberry Pi working on my Ubuntu machine. During my initial attempts I was using the arm-linux-gnueabi compiler, which is available in the Ubuntu repo. I ...
0
votes
1answer
293 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 , ...
1
vote
1answer
400 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 ...
0
votes
1answer
24 views

Store a data in a file using raspberry pi

Currently i am developing O2 Analyser project's code in raspberry pi 3 using C skill.Here, some details will print on display(20x4 lcd) & this all details i want to store in my raspberry pi's (...
0
votes
1answer
301 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 ...
2
votes
1answer
1k views

Cross compiling Qt on windows for raspberry pi, missing xcb dependencies

I am trying to start with Qt for Raspberry Pi on a Windows Dev System. To begin with to setup the environment, I followed the below as per the official wiki page. From starting at various stages, I ...
0
votes
0answers
20 views

Help with RPI ZERO W Kali Linux A.L.O.A

I have a raspberry Pi ZERO W and installed kali linux on to it.To be specific it's the Kali linux A.L.O.A and i have a wifi adapter that i want to setup but i don't know how and when if type ifconfig ...
1
vote
1answer
827 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 ...
2
votes
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 ...
1
vote
2answers
54 views

Can't see home folder in drive but can see from terminal

I'm trying to open my home folder on my raspbian lite sd card. I have the rasbian os plugged into a sd card reader to my ubuntu laptop. I can't see it in when I open the directory in GUI but I can ...
21
votes
7answers
29k views

Can't get a CIFS network drive to mount on boot

I have added a share in fstab to access a network drive with all my files on... fstab looks like: proc /proc proc defaults 0 0 /dev/mmcblk0p1 /boot vfat defaults 0 2 /dev/mmcblk0p2 / ext4 defaults,...
2
votes
1answer
38 views

Unable to open files with multiple lines in ssh session

I am having an issue where I cannot view/edit the contents of a file that is larger than a few lines of text/code. When I use nano to open a file the system hangs after displaying: "[Read N lines]" ...
1
vote
1answer
244 views

HDD spin down too fast

I have external HDD connected to raspberry PI. I wont to set the spindown time to 5 minutes. When I use sudo hdparm -S 60 /dev/sda it works fine. Of course, I set up APM before to 127 by sudo hdparm -...
0
votes
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 ...
2
votes
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 ...
-2
votes
1answer
13 views

For the Chrony refclock directive, how is the precision option used?

The man page says the precision of the reference clock has units of seconds. What do those seconds measure?
0
votes
3answers
755 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 ...
0
votes
1answer
726 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 ...
0
votes
1answer
46 views

Is there any way to extract files from damaged backup.img file?

I have a raspberry pi backup.img file that I was trying to extract some of its inside files, I used different softwares to do that but all failed. I used Winzip but I got a message sys that this file ...
1
vote
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/...
0
votes
2answers
41 views

I have a doubt about the Linux distro I should use [closed]

I'm not a complete beginner, nor am I a total expert. Which Linux distro will go better than Ubuntu? I want one with which I can handle complex IoT easily and also browse the net and play games and ...
0
votes
1answer
24 views

Controlling array of fans

So I'm building a stack of Pi's and the case I'm buying comes with four fans. I want to use a Pi Zero (ideally, but whichever one will work is fine) to control all the fans but I have no clue if this ...
1
vote
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/...
0
votes
1answer
2k 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 ...
0
votes
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 ...
1
vote
0answers
35 views

Raspberry Pi/OBDII/Serial Communications over Bluetooth

Thanks for having a look at my post and my problem :) I'm presently developing an automotive on-board diagnostics scanner application in python3/wxPython. For the communications heavy lifting, I'm ...
3
votes
2answers
2k 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
votes
2answers
90 views

How to install updates without internet on Raspberry? [duplicate]

I want to calibrate my LCD screen, but i have no internet connection to my Raspberry Pi 2B. The terminal commands I would use with internet on the Raspberry Pi is cp LCD-show/xinput-calibrator_0.7.5-...
0
votes
1answer
37 views

Internet needed for apt-get?

i try to calibrate my touchscreen for Raspberry Pi 2B, currently the touch does not work (axis seems like inverted). So i came across this website: https://www.waveshare.com/w/upload/1/1e/...
0
votes
1answer
776 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 ...
0
votes
0answers
52 views

ESC/POS Printer not detected by Raspberry Pi

I try to connect a POS printer with my Raspberry PI 3B. In my opinion, the printer should appear under /dev/usb/lp* or /dev/ttyUSB* or /dev/ttyACM* after connecting. At the moment I can't find the ...
1
vote
0answers
30 views

Raspberry pi3 TFT screen setup

EDIT: This is the the screen I bought This is my first post here so I hope I do not screw up too much... I have a raspberry pi3 with 3.5inch tft resistive touchscreen display (720x480) connected via ...
0
votes
1answer
77 views

Not able to compile the u-boot 2017.09

This is the OS info that I am using in my pi3 (BCM 2837) board. pi@raspberrypi:~ $ uname -a Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/Linux [ am I using the ...
1
vote
1answer
2k 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 ...
1
vote
1answer
3k 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 ...