Questions tagged [ubuntu]

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

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How to Resolve Port 53 Conflict Between, systemd.resolved and pihole-dnscrypt docker

Problem: port 53 conflict between systemd.resolved and pihole in the pihole-dnscrypt docker Setup: pi 4, ubuntu 20.04.2 (clean install) Guides for install: (1) https://github.com/losuler/pihole-...
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Is there a substitute for ejecting a SD card on ubuntu

I am having issues ejecting an SD card from an ubuntu Rpi in my bash script. When I run the command to eject, the following error is displayed NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT ...
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How Install Ubuntu 21.04 (Desktop) on Raspberry Pi 4 using Serial Console? [duplicate]

Hello how can I install ubuntu desktop 21.04 on raspberry pi 4 using serial console? I want to use the Raspberry Pi 4 UART pins to communicate using TTL to USB convert device to my windows 10 OS using ...
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Can we install AMD64 programs via Ubuntu on Raspberry Pi 4?

I was planning to download some programs from snapcraft.io and to invest in a Raspberry Pi 4 8GB, and install Ubuntu on there, so I can run it. I was wondering if this was possible by any chance? Wasn'...
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1answer
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File Recovery from thumb drive - Bad Superblock

So I have a 64GB SanDisk Cruzer Glide, and recently something happened to it. Whenever I would try to fsck it said the magic number for the superblock was corrupted, I didn't know what that meant, so ...
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iQaudio DAC-pro hat not recognized by ubuntu 20.04 on rPi4b

I've added a iQaudio DAC-pro to my raspberry pi 4b running ubuntu 20.04. I cannot find the dac in amixer $ sudo amixer Simple mixer control 'Headphone',0 Capabilities: pvolume pvolume-joined ...
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Access remote `/dev/input/` on local machine

My robot needs to read input commands from a USB joystick which is physically connected to a remote desktop (Ubuntu). On desktop, the joystick is available for local user with permissions: crw-rw-r--+ ...
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35 views

Will this work for the Pi 400?

I'm planning to buy one of these USB-A to 3.5mm Audio jack for the Pi 400 since it has no audio jack... https://www.amazon.com/gp/product/B089NJPSXN I don't have the option to use HDMI audio output (...
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1answer
58 views

How to get Podman 3.1.2 running on Ubuntu 20.04?

Fresh installation with Raspberry Pi Imager of Ubuntu Server 20.04.2 LTS (RPi 3/4/400) on a Raspberry Pi following standard tutorials: cat /etc/os-release export VERSION_ID=20.04 sudo sh -c "echo ...
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1answer
45 views

How to get raspi-config on Ubuntu 21.04? - Failed to update superblock on microSD on Ubuntu. Needed to setup USB boot

I wanted to do a USB boot from a PI 4. (My microSD card would not boot. Superblock not writable ... see below). I am currently running Ubuntu 21.04 on a Raspberry PI 4 with 8GB of RAM and using zram ...
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ssh “connection timed out” after rebooting

I got an Raspberry Pi 4 4GB running Ubuntu 21.04 Desktop. I want to connect via ssh to my Raspberry Pi Zero (without Wireless) running Raspbian lite. For the ssh setup i followed the instructions ...
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How to run GitLab through Docker on Raspberry Pi 4b on Ubuntu Server?

While trying to start GitLab in a Docker container I am experiencing some issues. The command does works on other pc's. The command consists of: sudo docker run --detach \ --hostname 127.0.0.1 \ --...
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RPi wlan0 eth0 bridge, how to debug DHCP issues?

I followed this tutorial to set my RPi 4B up. In my basement, I have my RPi connected via cable and want to bridge a new WiFi AP (as in the last part of that post above). The first time, everything ...
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Error processing package code while installing Visual Studio Code in Ubuntu 21.04 on Raspberry Pi 4 model B

Help. Any suggestions? I'm trying to install Visual Studio Code but I keep on getting some errors in the process. Using the terminal in Ubuntu 21.04 on a Raspberry Pi 4 model B, 8GB RAM. It looks like ...
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Using the Google AIY kit with Ubuntu 18 (ARM)

I installed Ubuntu 18 (ARM) on a Raspberry Pi 3B so that I could use ROS melodic to control an iRobot Create2. Everything has been going splendidly until I noticed the Google AIY Voice kit I had ...
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1answer
93 views

Firefox 89 on Pi - visual codec artifacts

Firefox 89 on my Pi 4 is displaying bad codec symptoms, videos can be watched but the picture is corrupted by brightly coloured patches around areas of detail. On the Pi I am running Ubuntu 21.04 and ...
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1answer
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I broke my network on my raspberry pi

As I was experimenting with various things I deleted the file /etc/netplan/50-cloud-init.yaml. Now I can't get any network (ethernet or wifi) to connect. So I can't ssh to fix things. I am on Ubuntu ...
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1answer
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What happens with .local when there are two paths to the host?

My hostname is mr2 When I am connected via ethernet I can access it with mr2.local and when over wifi, also. But what happens when I am connected both ways, or if I disconnect wifi and reconnect ...
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Audio alternatives for Raspberry Pi 400

So as you all know, the Raspberry Pi 400 does NOT have an audio jack, which is pretty annoying especially when I need to get audio output from it. Can I connect to a Raspberry Pi 3B via Bluetooth from ...
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2answers
107 views

GPU Memory for No gui Ubuntu

Context: I am currently running a RPi 4 8GB with Ubuntu 20.04 LTS on an M.2 240GB SSD. This system has no gui. I use it for GitLab and CICD purposes. On a x86_64, I know we can get a way with 0M for ...
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1answer
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How to disable kernel upgrade on Ubuntu Server 21 64 Bit on Raspberry Pi 4b?

How can I disable kernel upgrades on a fresh installation of Ubuntu Server 21 64-bit OS for arm64 architectures on a Raspberry Pi 4b with 4gb? Based on this source, I tried: sudo apt-mark hold 5.11.0-...
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Remoting into Raspberry Pi 4 using VNC viewer without permission

I have a Raspberry Pi 4 running Ubuntu 20.04 and every time I try to remote in, it prompts this message: Another user is trying to view your desktop. A user on the computer "192.bla.blah.blah&...
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2answers
252 views

Ubuntu booting from SSD (USB) with Raspi 4

I made the (wrong) decision of installing Ubuntu LTS on my Raspi 4 that I used as a server, thinking it would be easier to install and configure stuff as I'm used to Ubuntu. Turns out for some reason ...
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Raspberry Pi 4B - UBUNTU 21.04 - DSI + HDMI

SPECS: Raspberry Pi 4 Model B, Ubuntu hirsute hippo (21.04) 64 bit, 4.3 inch Capacitive Touch Display for Raspberry Pi, DSI Interface, 800×480 Initially I used HDMI to do setup with raspberry pi 4 ...
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1answer
28 views

GPIOZERO how to install lastest version on Ubuntu 20.10 servver

I am running gpiozero on my Raspberry Pi4 Ubuntu 20.10. I need to update gpiozero (1.2) to latest version (1.6.1) to use the RotaryEncoder class which is not present in the package I have installed ...
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Wireless keyboard & mouse receiver only recognized as a mouse receiver (Rpi 4 ubuntu 21.04)

I have a USB receiver that's for both a keyboard and a mouse. When I plug it in to a computer, it works perfectly. But when I plug it in to my raspberry pi 4, the wireless keyboard doesn't work while ...
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31 views

Mount USB then NFS

I'm creating a kubernetes cluster with 1 desktop pc and 3 raspberry pi4. The desktop PC is set as master node and NFS server. Each RPi4 has two USB keys: Ubuntu 21.04 Server on 32GB key Storage on ...
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47 views

Ubuntu 20.04 Raspberry Pi 4b PXE boot fails after run /init

I have been trying to PXE boot Ubuntu 20.04 server lts for the rpi4 since about a week now, and I am basically stuck at the point where /init is executed and the boot process basically stalls. I can't ...
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2answers
125 views

Fan won't turn off on shutdown

I am trying to make sure my fan turns off when I power off my raspberry pi (without having to unplug it). My fan is connected to the 3.3V pin. I didn't connect it to the 5V pin because I deemed the 3....
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How to extract aarch64 vmlinuz gzip image?

I am trying to PXE boot Ubuntu 20.04 aarch64 on the pi 4b but I am stuck at the point where I need to extract the kernel image vmlinuz-5.4.0-1028-raspi. I tried to zcat and pipe it out but I ended up ...
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1answer
36 views

Raspberrypi4B: Unable to establish a BLE connection between RPi4B and Ubuntu Laptop

I am unable to establish an ble connection between my Raspberrypi4B and Laptop. Configuration is as below: Laptop: Ubuntu-20.04.2 LTS, bluez version: 5.53 Raspberrypi4B: Ubuntu-21.04 bluez version: 5....
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34 views

Raspberry pi 4 gives vertical color lines on bootup

I am using a Raspberry pi 4 model B 4GB with ubuntu 20.04 installed on a 32GB memory card and when I booted, I got a display with vertical color lines. I tried using multiples displays and all results ...
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42 views

uart2-5 Raspberry Pi 4

I am using an Raspberry Pi 4 os-ubutun-mate 20.04(focal) I am trying to to enable uart2 and uart3 on my Raspberry Pi 4. However, I'm not sure how to do this? I've read several articles and posts ...
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24 views

Mount SMB share while being able to change owners

It's pretty hard for me to explain what I'm actually looking for. So I'll describe what I'm trying to achieve: I'm running Ubuntu 64 bit, docker with Traefik 1.7 and Portainer on my RPI 4 Now I'm ...
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2answers
39 views

User getting removed from group after reboot

I am running Ubuntu Server 20.04.02 LTS in my RPi 4b. I ran into the problem that I couldn't access the GPIO without sudo/root with my python scripts so I changed the /dev/gpiomem group ownership to ...
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57 views

Picamera on Ubuntu 18.04 64-bit

Is there any way to get picamera to work on Ubuntu 18.04 64-bit. I have tried: Compiling a non-official version of userland for 64-bit and it compiled, but the camera does not work I have tried using ...
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91 views

Playing Netflix on Ubuntu 20.10 Raspberry Pi4 8GB

Is there an easy way to get Netflix working on Raspberry 4 running Ubuntu 20.10 64bit? I have tried numerous ways including: https://github.com/monkaBlyat/docker-chromium-armhf But it fails on step: &...
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0answers
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Rpi Camera in ubuntu server 20.04 raspistill working, but python picamera and c++ raspicam not

I have been able to get the rpi camera v2 working on ubuntu server 20.04 (64bit) by using raspistill. However I am having trouble getting it to work with the python package picamera and the c++ ...
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21 views

SSH running, can connect but no authentication working

I just installed Ubuntu server 20.04.02 onto a new SD card, the rpi unit (rpi3) has ethernet. I can connect from my ubuntu laptop, but all authentication is failing (as show with sudo systemctl status ...
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18 views

Not able to mount D-Link DMW-156 on ubuntu system

D-Link DMW-156 is a 3g USB dongle, when I plugin to the usb it shows green light for few seconds and then red light.Have tried the following commands on the terminal. sudo mount /dev/sr1/mnt mount: /...
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15 views

RPi.GPIO on ubuntu 14.04 running ros. Python 3.6.3

I'm trying to controll the GPIO pins while running ROS on ubuntu 14.04. First i got the error that went something like "can only run on a raspberry pi!" So I upgraded my python to 3.6.3, now ...
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Camera in raspberry pi shows no input on screen

I am new to using raspberry pi I have rsp 4 model b, I need it for a college project I am doing, I bought a camera module for it. and it doesn't show output on screen using "cheese" I am ...
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1answer
25 views

Do I install Ubuntu Mate via a USB or do I make the SD card HD a bootable image? [closed]

I have a RP 4. 8gb. My SD card got erased. So I reinstalled the original boot using Raspberry Pi Imager. Now I want to use Ubuntu Mate as my OS. Do I leave the SD card in the RP4 and then have a ...
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1answer
195 views

Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Raspberry Pi 4 8GB Ubuntu 20.04.2 LTS Before this happened, I was able to run a bunch of Docker containers without an issue. However, my Pi suddenly stopped working (wasn't able to SSH into it, wasn'...
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26 views

Display colour (ICC) profile on Raspberry Pi 400 running Ubuntu 20.10

I have a display, which really requires applying proper correction in order to deliver good, readable output. It's never been a problem on x86/amd64 Ubuntu. Now I have it connected to a Pi 400 running ...
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1answer
62 views

Wrong password creating on first boot (cloud-init) (Ubuntu 20.04 server, RPI 4)

I try create preinstalled user for Ubuntu 20.04. For this i add some entries in accordance with official docs, to /etc/cloud/cloud.cfg (config for cloud-init ) Old: users: - default My: users: ...
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1answer
155 views

How can I enter Ubuntu desktop recovery mode?

I removed gdm and install lightdm, after that I am stuck at infinite loading. Pressed Ctrl + Alt + F2, unable to use TTY... And I cannot enter recovery mode by press shift... What can I do for it?
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1answer
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Ubuntu server is not booting using the custom image option

I want to install ubuntu server on my Raspberry Pi 4. I used the Raspberry Pi imager with the image Other general purpose OS > Ubuntu > Ubuntu Server 20.04.2 LTS. But it turns out that this ...
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1answer
52 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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1answer
84 views

Install Ubuntu 20.04 on Pi 4B

I have a Pi 4B (4GB) on which I want to install Ubuntu 20.04.2 Desktop. The Raspberry Pi Imager gives me the opportunity to only install Ubuntu 20.10 Desktop or 20.04 Server. Older versions of the ...

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