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Questions tagged [ubuntu]

Ubuntu is a Linux operating system derived from the Debian distribution.

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26 views

Ubuntu server : SSH by default (setup without monitor)

I need to setup a Raspberry Pi 4 without a Monitor, I want to run a light version without GUI just to run some docker, I though Ubuntu Server was a good idea. I try to add a SSH file on the microSD ...
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16 views

How to install LCD driver on pi4 with Ubuntu19.10?

I try the LCD driver in github: git clone https://github.com/goodtft/LCD-show.git cd LCD-show/ sudo bash ./LCD35-show output: dpkg: 依赖问题阻止了卸载 xserver-xorg-input-evdev 的操作: xserver-xorg-input-evdev-...
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9 views

Rainbow screen issue with raspberry pi 3 model b+

I am using Raspberry pi 3 Model B+ and using Ubuntu Mate operating system. I am also using raspberry pi 3 supportable original charger of 5.1V 2.5A. still i am facing the same rainbow screen issue on ...
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8 views

How to install PIXEL on Ubuntu Server (64bit)

I got a Raspberry PI 4 running 64bit Ubuntu Server. Now I have a bash prompt want a desktop environment. Hopefully, the PIXEL desktop to minimize differences from stock Raspbian. A quick google ...
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1answer
45 views

When I make a clone of my SD, the resulting image has ethernet problems

First of all, I'm working with Ubuntu Server 18.04, on a Raspberry Pi 3b+. I'm running a server with Nodejs and MongoDB. Everything works perfect. The problem comes when I want to clone the SD into ...
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45 views

systemd-networkd DHCP ethernet configuration using wpa_supplicant for eap-tls

I am having trouble making a connection to internal corporate network on my Pi3. I currently have Ubuntu Server 19.10 installed and am using NetPlan to manage the systemd.networkd configuration. What ...
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1answer
100 views

Connecting ESP8266 wifi module with Raspberry Pi zero to use home wifi

I have been following 3 sources below where I could set up my Raspberry Pi zero with Wifi using ESP-01 (ESP8266) but am still struggling to get it working. Wifi configuration 1 Wifi configuration 2 ...
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21 views

Disabling auto-login after it was once enabled during build

I am running Ubuntu 16.04.6 LTS ( Mate, built with ubuntu-mate-16.04.2-desktop-armhf-raspberry-pi.img ) When I initially built this, I enabled the auto-login when going through all the initial ...
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15 views

CompoundPI unidentified server problem

I am trying to use CompoundPI (https://compoundpi.readthedocs.io/en/release-0.4/quickstart.html) with two RPIs and an ubuntu client. CompoundPI connects multiple RPIs, that each of them has a picamera,...
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48 views

Emulating Raspberry Pi with GUI on QEMU / Virtual box in Ubuntu with RAM > 256Mb

I am searching for documentation on emulating Raspberry Pi with GUI on QEMU in Ubuntu with RAM size about 1Gb. Most articles I found from google are either emulating 256Mb rpi with jessie or in the ...
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1answer
127 views

backup raspberry Pi OS

Hello i am running ubuntu mate on raspberry pi 3 and i would like to back up the img of the OS straight to an external usb. Do you have any suggestions ? Is this going to work ? sudo dd if=/dev/...
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18 views

Capture snapshots from network stream

I am using the "Recording to a network stream" recipe to (https://picamera.readthedocs.io/en/release-1.13/recipes1.html#recording-to-a-network-stream) stream video from raspberry pi. I have modified ...
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1answer
43 views

WiFi Connectivity Issue

I have a Raspberry Pi 3 (Model B). I want to use it as a terminal to operate a CNC machine as it has a Web Interface (Duet WiFi). I just need something with a browser and internet connection. I first ...
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2answers
50 views

How do you install software directly into a SD image?

So I'm using this SD Card image for my raspberry pi downloaded from Ubiquity Robotics. It has ROS preinstalled and runs Ubuntu OS. The problem is I'm missing a few dependencies missing and because of ...
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1answer
54 views

Can you switch from connecting the RPi from pifi access point to an actual router access point

So for a robotics project I have in mind I'm trying to create an access point on my rpi so that I can directly ssh into it without using wifi from another router. But the problem is that I'm not sure ...
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34 views

Raspberri Pi unreachable

I am totally new to the forum, linux and Rasperry Pi, which is not the best baseline, I know. I bought some Raspberry's (4B) and made two bootable SD cards. I don't like the interface of Raspbian, so ...
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24 views

How to change COM port setting on Raspberry Pi using Ubuntu Mate

I would like to ask how to change USB port and COM port setting on Raspberry Pi 3 B+ using ubuntu Mate 18.04? I want to connect my sensor to the raspberry pi, and need the com port number. Any ideas ...
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65 views

Linux host can't connect to Raspberry Pi Zero serial gadget console

I followed this guide and enabled a serial console over USB. I can connect and log in from Windows but my Ubuntu laptop can't access the serial console. The Raspberry shows up ad a tty device in /dev/...
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28 views

Compile Qt application on Raspberry Pi and Run that application on other ARM device. Will it work?

I am compiling One Qt application on Raspberry Pi and Run it on different ARM device like Microchip or TI board without compile again. will it work??? if both the side Qt version is same.
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1answer
107 views

Bad serial connection on USB OTG Serial on pi Zero

I am running Ubuntu 18.04 with Jakeday's surface linux kernel on a Surface Book 2. I had a serial connection working yesterday. I had this problem on another pi zero. I researched the "failed to set ...
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1answer
48 views

Can't return any values from ttyUSB0

I'm using a SICK S300 scanner connected via Diagnostic cable to my Raspberry Pi, and it shows the connection as /dev/ttyUSB0 however I can't retrieve any data from it whatsoever. Here is a simple ...
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1answer
1k views

Install 64bits os on Raspberry Pi 4

I'm not able to run 64-bit OS on my Raspberry Pi 4. If I do these steps (https://www.raspberrypi.org/documentation/installation/installing-images/mac.md) with a 32bit OS it works fine, but if I use ...
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1answer
101 views

Installing interactive brokers IB gateway on raspy 3B+

I found some posts that walk you through the installation but they are very old and don’t work anymore. I tried to install the oracle java for Arm Linux and then modify the IB installation script to ...
1
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1answer
127 views

symbol lookup error: undefined symbol: _ZN7QWidget8qwsEventEP8QWSEvent

I have cross-compiled executable file from QT 4.8.7. I am running it on a Raspberry PI (Ubuntu), with QT 4.8.7 and QT declarative module installed. When i run the executable file on my raspberry pi, i ...
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0answers
43 views

bluetoothctl hangs with “connect to bluetoothd”

I have a Raspberry Pi 3 and I have been playing with the bluetooth functionality. It worked for a while: I successfully paired a Windows machine with my Pi, but now it does not work anymore. I used ...
2
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3answers
68 views

SSH Connection refused, even though the openssh-server daemon is running

I did a fresh installation of Ubuntu Mate on my Raspberry Pi 2. Installed openssh-server (in fact it was already installed), and changed the port to be 10022. However, I cannot access the Pi, from ...
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2answers
30 views

Connections to my Raspberry PI SSH hang after a while

I have a Raspberry Pi 2 B connected on the network with a static IP. After a fresh reboot, I can connect to it smoothly and it just works: ssh -A <ip> -p <port>. But after, let's say one ...
2
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1answer
131 views

DNSMasq unknown interface wifi0 - failed to start

Introduction I am trying to use my Ubuntu Core-RaspberryPi as a Wifi Access point. Therefore, I am using hostapd and dnsmasq. I followed this tutorial in order to setup everything. I start them ...
0
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1answer
156 views

Unable to install Mongo-DB on Raspberry Pi with Ubuntu Core 18.04

I am trying to install mongoDB on my Raspberry Pi 3b+, which has an ARM 4-Core 64 bit processor. I was trying to install MongoDB on my Pi just as mentioned in their documentation but unfortunately I ...
0
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1answer
32 views

How to Install Fedora/Pidora and Ubuntu Mate on Raspberry Pi?

I have a Raspberry Pi 3b+ and a Windows Laptop, through which I have downloaded Pidora and made a bootable SD Card with Etcher Software. When I try to boot my Pi using this SD card it is not doing ...
1
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2answers
154 views

How do I enable wifi before login on ubuntu-mate running on a Raspberry Pi?

I have a Raspberry Pi 3B+ with Ubuntu-mate 1.20.1 (Ubuntu 18.04.2) that I want to run headless and use VNC and SSH to access. Connections will be via WiFi, and the Pi has a static address on my ...
0
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1answer
190 views

How to set up wifi with ubuntu 18.04.2?

I'm trying to use ubuntu OS on my raspberry pi 3 B+. I have formatted my microSD card to FAT32 and copied the ubuntu-18.04.2-preinstalled-server-arm64+raspi3.img. I am able to have the OS working. ...
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0answers
30 views

Connected to the internet but unable to ping

I have a Raspberry Pi 3b+ with a Huawei E3372 LTE USB Stick. I use a mobile simcard in this USB stick to provide it with a internet connection. The problem now is that I can't even ping the IP ...
1
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0answers
83 views

Ubuntu Mate compatibility

A Raspberry Pi3 B+ was outfitted with: ubuntu-mate-18.04.2-beta1-desktop-armhf+raspi-ext4.img which indicates that the B+ is the recommended hardware. That being said, at bootup, the rainbow screen (...
2
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0answers
41 views

Share Ubuntu Internet Connection With Raspberry Pi 0

I'm connecting to my raspberry pi zero over USB and SSH currently but would like to share my computer's internet connection to it over the same USB cord. I've seen people do it on Windows and Mac but ...
0
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0answers
20 views

Problems Installing when Chrooting into Raspberry Pi Zero W

I've been currently trying to more quickly install large libraries like scipy on my raspberry pi zero w. I'm using this proot command: sudo proot --qemu="qemu-arm -cpu arm1176" -S /media/emdash00/...
1
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1answer
296 views

How to install PyCharm on Ubuntu Mate (Raspberry Pi3)?

I'm trying to install PyCharm on my Raspberry Pi running Ubuntu Mate. But I don't understand the error message I get. First I followed this tutorial : https://linuxize.com/post/how-to-install-pycharm-...
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0answers
32 views

RPlidar could not be launch

I am now doing a project using RPLidar in ubuntu 16.04. However, I am facing some problem with running the RPLidar. I have checked that my userid is inside the dialout group. The below code is what I ...
0
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0answers
57 views

capturing video stream using piCam

i'm trying to capture the video stream using piCam. but i get this warning and the execution stops this the code: this the code I used: import numpy as np import cv2 cap = cv2.VideoCapture(0) cap....
7
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1answer
5k views

How to setup the Raspberry Pi 3 onboard WiFi for Ubuntu Server 18.04 with netplan?

How to setup of Raspberry Pi 3 B+ onboard WiFi for Ubuntu Server 18.04? In particular, with netplan? This is a clean install of the Ubuntu Server 18.04 image for Raspberry Pi 3. File: ubuntu-18.04.2-...
2
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1answer
357 views

PoE hat fan activation on OS other than Raspbian

I'm aware that the only officially supported OS that the PoE hat works on is Raspbian. I can confirm that both my hats work, and that the fan does switch on and off if I have Raspbian installed on the ...
2
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1answer
62 views

Using Pi to stream audio from PC to stereo

I would like to use my pi to stream the audio from my pc to my stereo. I am using the method described here. Unfortunately, my computer does not detect the pi. Some details about my installation: ...
2
votes
2answers
171 views

SSH port forwarding problem NAT/PAT (Livebox) : remote internet access to raspberry pi using SSH

I'm a french student trying desperately to grant access to a raspberry pi using ssh. I'm using : raspberry : raspberry B+ with raspbian laptop : ubuntu 18.04 router : livebox 3 (France) My goal :...
0
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1answer
620 views

Ubuntu MATE Pi not connecting to monitor?

I just flashed a MicroSD card with Ubuntu MATE. I booted up my Pi 3 Model B with it and the monitor is just showing a black screen. The monitor looks like it is connected to the Pi, because it is on ...
1
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1answer
279 views

how to capture a single frame using gstreamer

I am using the following command to capture multiple frames: gst-launch-1.0 tcpclientsrc host=192.168.1.2 port=5000 num-buffers=100000000 ! gdpdepay ! jpegparse ! jpegdec ! multifilesink location="...
1
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1answer
34 views

Raspberry Pi board is not detecting LAN connection

I'm working on Raspberry Pi board with Ubuntu OS but it's not detecting the LAN connection and I am not getting an IP address when I type ifconfig. I've added below code to /etc/netplan/01-config....
1
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1answer
633 views

Run a script when wifi is connected to a particular wifi network?

My Raspberry pi is connected to my home wifi network. This wifi network have a captive portal and hence each time I need to sign in the captive portal to use the internet. Now I am trying to automate ...
0
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0answers
64 views

PI2 and Ubuntu Core 18 kind of stuck

I just conect my PI2 that I purchased a few years ago. I could not install any of the Raspbian or what was on the micro sd card. So, I downloaded and installed ubuntu-core-18-armhf+raspi2.img.xz. ...
0
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1answer
57 views

Raspberry Pi 3 possible OS installations

I have installed Raspbian OS in a 32 GB memory card and am using it in Raspberry Pi 3. Is it possible to put Ubuntu OS on the same memory card and use it on the RPI 3?
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0answers
110 views

How can I use the free version of Qt to create a GUI for the Raspberry Pi?

I am working on a project that requires high-medium quality GUI. I am thinking of cross compiling from Windows to Raspberry Pi or from Ubuntu to Raspberry Pi. Also, I do not know which one of those ...