Questions tagged [ubuntu]

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

178 questions with no upvoted or accepted answers
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1answer
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Ubuntu 21.10 desktop environments freezing on Pi 400

I have created SD card with Ubuntu Desktop 21.10 using Pi Imager on Raspbian. It boots fine but when I interact with desktop environment, e.g. re-arrange the icons on the sidebar, the desktop ...
4
votes
0answers
1k 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. ...
3
votes
0answers
660 views

How to netboot Ubuntu 20.04.1 Pi4 to Pi4 with dnsmasq…?

I've been trying to netboot my Pi4's using a Pi4 with dnsmasq on Ubuntu. So the idea is to have one Pi with attached storage serving the others. My setup is: master PI with an USB SSD running Ubuntu ...
3
votes
1answer
1k views

Persistently increase usbfs_memory_mb on RPI4 running Ubuntu 19

I am working with a 4gb RaspberryPI4 and it's running a USB3 Flir Blackfly. Out of the box, the setting of usbcore.usbfs_memory_mb @ 16 isn't enough to get a stream from the camera. Increasing the ...
3
votes
0answers
805 views

How to boot Ubuntu 14.04 for Raspberry Pi 2 under qemu?

There's an Ubuntu image for the Raspberry Pi 2 here: https://wiki.ubuntu.com/ARM/RaspberryPi I'd like to boot this image under qemu. I'd like to do it so that I can have some virtual build systems as ...
3
votes
0answers
1k views

Keyboard doesn't work in initramfs

I've setup an encrypted root partition with Ubuntu 15.04 MATE (the latest image). I've fought with it for quite a while now, but I'm now certain that the initramfs has everything it needs in order to ...
3
votes
1answer
1k views

Snappy Ubuntu Core In Debain Qemu

Is there a way to emulate the Snappy Ubuntu Core image in Qemu under Debian now that it has an arm cortex a-7 chip on it? I tried following this wiki and installed virt-manager to set things up but I ...
2
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0answers
121 views

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++ ...
2
votes
0answers
237 views

Streaming video from OpenCV with GStreamer over UDP to PC

I'm trying to stream a video that has been processed by OpenCV using GStreamer over UDP from a RPi4 (Ubuntu 20.04 LTS 64bit without any GUI) to a PC (Ubuntu 18.04). I'm sharing Wifi connection to the ...
2
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0answers
556 views

how do i get zoom on a raspberry pi 4?

I am looking to install zoom web conferencing on my raspberry pi 4 4gb running Ubuntu mate 20.04. I have tried the pi kiss method but pi kiss wont load. How do i do this?
2
votes
1answer
2k views

Pi 4 - Ubuntu 64 bit - Boot from SSD over USB - Gets stuck in Initramfs after reboot

TL;DR; Successfully install Ubuntu Mate 20.04 64 Bit on Raspberry Pi 4 (4GB) and boot over USB 3.0 SSD. Works fine. After I do sudo reboot -> ubuntu is broken and I enter initramfs shell, cannot ...
2
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0answers
541 views

ALSA errors on raspberry pi 4

So i'm trying to make a virtual assistant on a raspberry pi 4. I have coded the bot to work on my windows machine but now I'm running into errors while using the raspberry pi I figured out which part ...
2
votes
0answers
473 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 ...
2
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0answers
81 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 ...
2
votes
0answers
967 views

Better mouse controls with touch screen?

I'm using the raspberry pi official 7" touch screen (The one supplied with this http://a.co/gOTsWDC I don't know which model that is) and a raspberry pi 3 model B. I've noticed two major problems, ...
2
votes
0answers
3k views

Raspberry pi 3 uart not working

I've done almost any tutorail I found in the internet, but I cant get successful communication with uart in RPI3 Ubuntu Mate. I've added enable_uart=1 and dtoverlay=pi3-disable-bt and core_freq=250 ...
2
votes
0answers
554 views

Wifi shared through ethernet cable [Ubuntu]

I have a laptop connected to wifi. I would like to connect my Raspberry Pi to it with an ethernet cable and have access to internet thanks to the laptop connection. I have found a lot of partial ...
2
votes
0answers
1k views

Chromium **No sound** or/and **"Aw, Snap!"** message when initiating a WebRTC session

ISSUE No sound or "Aw, Snap!" message when trying to initiating a webRTC session e.g. http://appear.in, http://opentokrtc.com or apprtc.appspot.com The video session session seems to work alright ...
1
vote
0answers
45 views

maximum overclocking values (all of them)

what are the maximum values for h264_freq, isp_freq, v3d_freq and hevc_freq on the raspberry pi 4 model b? one more thing, does setting over_voltage_sdram give any improvement in performance?
1
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0answers
84 views

Temporary failure resolving 'ports.ubuntu.com' on Ubuntu 20.04

I have spent a lot of time looking for a solution to my problem. Everything I've tried hasn't worked so far. From what I understand, this is an internet connection problem or a DNS issue. I followed ...
1
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0answers
22 views

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--+ ...
1
vote
2answers
936 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 ...
1
vote
1answer
26 views

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 ...
1
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0answers
109 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 ...
1
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0answers
95 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 ...
1
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0answers
24 views

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 ...
1
vote
1answer
161 views

Ubuntu 20.10 aarch64 (Raspberry Pi CM4) how do I access 1-Wire devices?

Running Ubuntu 20.10 aarch64 (Raspberry Pi) on a Compute module 4 Am scratching my head on how do I access 1-Wire devices? I've tested by DS18B20 sensor using Raspberry Pi OS and it works by enabling ...
1
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0answers
58 views

Sensehat apt package on Manjaro ARM? Insights?

First post on here. I have a Raspberry pi 4b+ 8GB that I am super happy with. I've been messing around with different operating systems on this device and I find that the Manjaro ARM distro is really ...
1
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0answers
33 views

Bluetooth retransmission

I'm doing a project of automation, and I would like to implement a bluetooth "retransmitter" for sound. I'm currently using Raspberry PI 4 (4gb ram) with ubuntu desktop client 20.10 This is ...
1
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0answers
1k views

Can't run raspistill on Ubuntu 20.04 (rpi-4)

My system Distributor ID: Ubuntu Description: Ubuntu 20.04.1 LTS Release: 20.04 Codename: focal Raspberry: Raspberry 4B Raspberry Camera: V2.1 $ uname -a: Linux ubuntu 5.4.0-1022-raspi #25-...
1
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0answers
243 views

Tensorflow on Raspberry Pi with Ubuntu 20.04

I've installed Ubuntu 20.04 on a Raspberry Pi. Both my Ubuntu and Python3 installations are 64-bit. I'm now trying to install Tensorflow so that I can run (not train) a model. I've tried various blog-...
1
vote
0answers
99 views

Raspberry Pi 4 fails to reboot

I have a raspberry pi 4 running Ubuntu server 18.04. I usually SSH into it and reboot the system. However, I noticed that some times the pi does not successfully boot up again after shutdown so I have ...
1
vote
0answers
56 views

Random network sleeps when using ubuntu 20.04 server

I am trying to setup a cluster of Pi4Bs, and have decided to use Ubuntu 20.04 server 64-bit. I have setup static IP via Netplan and have disabled cloud-init. (Wired ethernet interface) But after this ...
1
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0answers
1k views

ZFS and USB boot on Pi4b 8Gb

I'm trying to make myself a NAS appliance with a Pi4b 8Gb. I would like to use ZFS for my storage but I'm having some trouble with installing it on pi OS. I'm trying to use USB boot (No SD) so I can ...
1
vote
1answer
924 views

Failed to start Load Kernel Modules for installing Ubuntu 18.04 on Raspberry 4

I tried to install Ubuntu 18.04 on Pi4. I followed the link from ubuntu for pi. After inserting the SD card with Ubuntu image, the error appeared after few lines with [FAILED] Failed to start Load ...
1
vote
1answer
693 views

How to use/install raspberry pi camera on ubuntu os

I am wanting to use ubuntu v20.04 64 on my Raspberry Pi 4. I also what to be able to use the on-board camera. I have followed these steps to install and boot up my Rpi4 with Ubuntu: https://ubuntu....
1
vote
1answer
1k views

Overscan on Ubuntu 20.4 LTS

I have recently been working on getting a server running on the pi 3. I installed the server but there was a lot of overscan, and at the time I didn't know what that was. I searched on the web for a ...
1
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0answers
107 views

Why does SSH on Raspberry disconnects when USB 3.0 is connected?

Hardware: Raspberry PI 4B. Connected to the Chinese adapter 5V - 3A. OS: Ubuntu 19.10 (GNU / Linux 5.3.0-1022-raspi2 aarch64). The situation is this: when I connected to the raspberry over SSH, I ...
1
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0answers
118 views

quiet splash boot on Raspberry Pi 4 / 19.10.1

Where do I enable "quiet splash" for booting my Raspberry Pi 4b on Ubuntu 19.10.1? Should it be on the Micro SD card or in the filesystem? I've made changes to grub without success. Does 19.10 even ...
1
vote
0answers
177 views

Cross-compiling QT interface to a Raspberry PI 3

I'm trying to install Qt interface to a Raspberry Pi 3, which raspbian is the "2016-05-27-raspbian-jessie". I didn't want to install, directly, all the packages on the raspberry so as to let ...
1
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0answers
50 views

Server 19.10 on Raspberry Pi 4 defaults to root?

I've successfully installed Server 19.10, then got a desktop (Lubuntu) going on a single Raspberry Pi 4 (4gb). I went with the 32-bit version, having heard the 64-bit is not very stable. (Please ...
1
vote
0answers
1k views

Wifi not connecting on Raspberry Pi 4 with Ubuntu Server 19.10

I installed Ubuntu Server 19.10 on a Raspberry Pi 4 with no ethernet connection available, and I was initially able to get it to connect to wifi with wpa_supplicant and dhclient. That allowed me to ...
1
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0answers
47 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.
1
vote
1answer
691 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 ...
1
vote
0answers
358 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 ...
1
vote
0answers
123 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 (...
1
vote
0answers
68 views

Will 'release-upgrade' to 18.04.1 LTS Server on Raspberry Pi 3B provide a 64bit Kernel

I have Ubuntu 16.04.5 LTS Server (for armvhf) installed on my Raspberry Pi 3B (ARMv8), which runs a 32bit kernel. I would like to install a 64bit kernel and associated modules with minimal fuss as I ...
1
vote
0answers
405 views

How to upgrade other major OS to work on 3 B+

Scenario I am yet another victim of thinking my rpi 3 B+ was broken when it wouldn't boot up. It turns out that the 3 B+ is looking for some special boot instructions. I currently have: Ubuntu Mate 16....
1
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0answers
292 views

Install Archer T1U driver on Ubuntu Mate

I am trying to install a driver for this wireless dongle but it states that the drivers can be built only on kernel versions 2.6~3.16. While mine is: uname -a Linux pi-raspberry11 4.4.38-v7+ #938 SMP ...
1
vote
1answer
4k views

3B+ fails to boot Ubuntu mate

I have the problem that the bootloader and kernel are too old in the mate image to run the on the new hardware. Raspian works fine with a noobs install. I tried the advice in the thread here https:...