Questions tagged [ubuntu]
Ubuntu is a Linux operating system derived from the Debian distribution.
585 questions
1
vote
1
answer
1k
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 ...
CommunityBot
- 1
0
votes
2
answers
3k
views
How do I install an older version of ubuntu on raspberry pi 4?
I need to install an older version of Ubuntu (20.04) desktop version for compatibility reasons. The Raspberry Pi imager v1.6.2 on windows only shows Ubuntu desktop 21.10 as available.
I tried to ...
- 1
1
vote
2
answers
616
views
Spidev missing?
New member (Pete) here, and I have delayed seeking help from a forum for the first month of my efforts with Pi, figuring I might in some ways remember things better if I work through the learning ...
- 61.5k
0
votes
0
answers
117
views
How to install DTBs overlays on Ubuntu Сore 20?
How to enable PWM device? There is no /sys/class/pwm/ devices. I did not find dts compiler or overlay config. Point to documentation of enabling GPIO devices: hardware pwm, spi, i2c etc.
- 107
0
votes
1
answer
846
views
How to make a raspberry pi a remote desktop controlled with normal pc running ubuntu?
I have a raspberry pi 4b and a normal full-size pc by dell. The big pc has ubuntu on it, and the pi has raspbery pi os bullseye. I want to make the raspberry pi be a remote desktop that can be ...
- 512
-1
votes
1
answer
3k
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 ...
CommunityBot
- 1
0
votes
1
answer
192
views
Ubuntu on Pi Zero 2W Wifi not listed
I can't figure how to setup a Wifi connection on my pi zero 2, running on Ubuntu server 21.
I tried many different things and here the results:
Raspbian lite: everything works fine
Ubuntu server: can ...
- 119
0
votes
1
answer
9k
views
netplan apply fails with "Cannot find unique matching interface for eth0"
Using Ubuntu 21.10, if I try to set a static IP for my raspberry in /etc/netplan/50-cloud-init.yaml, I have an error when I run netplan apply, that reads:
Cannot find unique matching interface for ...
CommunityBot
- 1
1
vote
0
answers
271
views
Properly chrooting and unmounting on external USB drive
I found multiple guides how to correctly chroot into an arm64 system. In my example I am working with the 21.10 Ubuntu arm image for raspbian pi. I am wondering what is the "best" and most ...
- 19
1
vote
0
answers
805
views
Connection too slow using RPi 4 and Wireguard
I setup a local home VPN on a Raspberry Pi 4 Model B 2019 Quad Core (4GB of RAM) running Ubuntu 20.04 connected to my home router using ethernet. I used PiVPN with Pihole for the setup. I setup the ...
- 141
0
votes
0
answers
25
views
Reboot on using Microsoft remote desktop
I have a raspberry Pi 4 running Ubuntu. Most of the times I connect to it using Microsoft remote desktop, it hangs and then reboots after some time. Has anybody seen this? How can I find out why the ...
- 1
-1
votes
1
answer
9k
views
Ubuntu Mate 16.04 on Raspberry Pi 3 B+
I would like to get Ubuntu Mate 16.04 on the Raspberry Pi 3 B+. According to this thread this should be possible. Here is the summary on how they achieved it:
Copy the following files from Raspbian ...
CommunityBot
- 1
-1
votes
6
answers
7k
views
Ubuntu Core Image - Unable to SSH into Raspberry Pi 3
I created install Ubuntu Core on a Raspberry Pi 3.
I followed the instructions here: https://developer.ubuntu.com/core/get-started/raspberry-pi-2-3
I made it all the way to a screen that says what ...
0
votes
1
answer
173
views
do i get more io from a cluster?
suppose i have a cluster of 2 pi 4s (8 gig model and 32gb sd cards). i will get 2 seperate computers together having 4 cores and 8gb ram (based on jeff geerling's blog https://www.jeffgeerling.com/...
- 1,063
2
votes
1
answer
7k
views
Default audio output to HDMI
I have an RPi4 installed with ubuntu20.10. I connect it to a display(TV) using an HDMI cable.
The problem is the output is by default set to a 3.5mm jack. I override that by running the raspi-config ...
- 161
1
vote
1
answer
803
views
How to set up picamera on Raspberry Pi 3 B+ with an Ubuntu 20.04 OS
I have a TurtleBot3 Burger robot which has a Raspberry Pi 3B+ on it. And the RPI has to run Ubuntu 20.04 OS, otherwise I can't use ROS and eventually the robot functionalities.
The RPI has a picamera ...
- 16
0
votes
2
answers
925
views
firmware bug bootloader left irq enabled bank 1 irq 9 and boot fails
I updated the packages on my Raspberry Pi 2 (running Ubuntu Mate 20.04) by using apt update and apt dist-upgrade. Everything went smoothly. Then I restarted, and got the following error during the ...
- 713
0
votes
2
answers
49
views
Can I use Ubuntu 8.10 on a Raspberry Pi?
I am working on a project that requires:
An open WiFi network
On that network, a device that has a known exploit.
My plan is to use a Raspberry Pi to create that open WiFi network, then use another ...
- 28.2k
0
votes
1
answer
232
views
LXPanel unresponsive and off desktop
I am running Ubuntu 16.04 in a VM.
I have successfully SSH'd into my Pi (Running Raspbian) using:
ssh -X <ip of Pi> -l <username>
When I run startlxde, an LXPanel shows up but it's off the ...
CommunityBot
- 1
0
votes
0
answers
248
views
How to install internet explorer and/or x86 emulator on raspbery pi 4b
I have a rasbery pi 4b 8gb and I want to install internet explorer on it. I am running ubuntu 21.10. I tried installing internet explorer 8 with PlayOnLinux and the installing window says "...
-2
votes
2
answers
210
views
ubuntu 18.04 server official release
Does anyone know where i can download the OFFICIAL release of Ubuntu 18.04 server for the pi4? All I can find on canonical's website is Ubuntu 20, which is incompatible with the software i need to run....
CommunityBot
- 1
2
votes
5
answers
10k
views
RealVNC Server on UBUNTU 20.10 (ARM64) on Raspberry Pi 4
RealVNC only provides a 32bit app for Raspberry Pi OS (32bit) and not a 64bit native application, at least for now. I'm using Ubuntu 20.10 on my Raspberry and need to use RealVNC to remotely access ...
-1
votes
1
answer
57
views
libacsccid1_1.1.0-1~trusty1_armhf.deb or similar version for Ubuntu trusty 14.04
I have an NFC reader ACR1251U-A1, and I'm trying to install the driver for my NFC reader.
In the folder that I have downloaded from the provider's website, there are only libacsccid1_1.1.0-1~trusty ...
CommunityBot
- 1
-1
votes
2
answers
2k
views
Connecting Raspberry Pi 4 to old VGA monitor
I'm trying to set up an old monitor to use with my Raspberry Pi with Ubuntu 20.04, but whatever options I try, my monitor doesn't detect any signal coming from raspberry.
I have original HDMI cable ...
0
votes
1
answer
1k
views
Ubuntu: upgraded kernel is not selected in the next boot
My Raspberry Pi 4 was originally loaded with Ubuntu 21.04, but after yesterday's release of 21.10, I upgraded using the do-release-upgrade command.
Among the other upgraded packages, there was a new ...
- 101
0
votes
1
answer
505
views
Ubuntu Desktop fails to boot on Raspberry Pi 400 with 32GB SD card
I have used Pi Imager to write Ubuntu Desktop to my SD card. When I try to boot from it in my Pi 400, I get the following error:
[50B]: Failed to remount '/' read-only: Device or resource busy
systemd-...
- 171
0
votes
3
answers
208
views
How do I turn off a raspberry pi without use of desktop?
I basically softlocked my raspberry pi 4 8gb using ubuntu when I attempted to put a shell file on my taskbar. I used nano to put scrot in an .sh file for easy screenshots, and when I tried to put it ...
- 111
1
vote
1
answer
1k
views
PoE+ HAT fan not working correctly on Ubuntu 21.04
So I bought a new Raspberry Pi 4 (4GB) and the official PoE+ HAT.
It is running the 64-bit version of Ubuntu 21.04 Server, completely updated.
Controlling the PoE+ HAT-fan should/could be done through ...
- 126
1
vote
1
answer
677
views
unable to gps data serially in raspi 4
I am trying to get ublox zed f9p module work with raspi 4. I am using this module
I am running on ubuntu 20.04 desktop version on raspi 4 and i have connected the module serially(/dev/ttyS0) to my ...
- 31
0
votes
1
answer
771
views
Why can't my Raspberry Pi find any WiFi networks?
There is a similar question to my question, but the answers were more specific to that situation.
I am running Ubuntu 21.04 on a Raspberry Pi 4b. I do not see any WiFi networks in the GUI WiFi pane, ...
- 22.8k
0
votes
1
answer
1k
views
How can I display Ubuntu Server 21.04 on a Waveshare 3.5" LCD display?
I installed Ubuntu Server on my Raspberry Pi 4. I have a 3.5" Waveshare display for it.
Waveshare provides instructions to clone a GitHub repository and then run a script called "./LCD35-...
- 28.2k
1
vote
1
answer
450
views
ssh session always freezes when running npm or unzipping large numbers of files
I have an RPi4 (4GB) that I use as a local development server running ubuntu 20.04. I connect to it using SSH and use git to download source code from my projects and run npm install to install the ...
- 28.2k
1
vote
1
answer
798
views
Need to see the console boot messages, not the splash screen
I am running Ubuntu 21.04 on RPi 4.
On boot up, I would like to see the console boot messages in real time (and not the splash screen).
On Intel PCs, that's easily done by editing the grub2 config ...
- 21
1
vote
0
answers
1k
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 ...
- 11
8
votes
4
answers
9k
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 ...
- 31
1
vote
1
answer
3k
views
How to use raspistill on a Raspberry Pi 3 from Ubuntu
How do you enable the camera module in Ubuntu 16.04 running on a Raspberry Pi 3?
This is similar to my earlier question, except where that was for the Raspberry Pi 2, this is for the 3.
I ran ...
CommunityBot
- 1
0
votes
1
answer
2k
views
How to build initramfs for custom kernel from cross-compile machine
I'm trying to start my Raspberry Pi with a custom 5.10.y cross-compiled Kernel for https://cdimage.ubuntu.com/releases/20.04.2/release/ubuntu-20.04.2-preinstalled-server-arm64+raspi.img.xz with ...
CommunityBot
- 1
0
votes
1
answer
306
views
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
...
- 22.8k
0
votes
0
answers
64
views
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 ...
- 1
-2
votes
2
answers
619
views
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'...
- 28.2k
0
votes
1
answer
764
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 ...
- 26
0
votes
1
answer
779
views
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 ...
- 2,539
1
vote
0
answers
133
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--+ ...
- 51
8
votes
5
answers
7k
views
How to update multiple Pis at once?
Is there a way to update multiple Raspberry Pi machines at the same time? Would it be possible to update them from a single copy of the image on the central Ubuntu PC server so that the download takes ...
CommunityBot
- 1
-1
votes
1
answer
177
views
Cannot install PureAdmin on my Raspberry Pi
I try to build my own FTP server. I already installed pure-ftpd and created a user for the FTP connection. It works well, but now I would like to have virtual users, for which I need install PureAdmin ...
CommunityBot
- 1
0
votes
2
answers
3k
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 ...
CommunityBot
- 1
0
votes
1
answer
2k
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 ...
- 61.5k
5
votes
2
answers
2k
views
Disable filesystem expand during boot for Ubuntu Server 16.04
I am attempting to get a sub-4gb image to retain its image size on my rpi regardless of the sdcard size. I am looking at using the ubuntu server image built by Ryan Finnie ubuntu-16.04-preinstalled-...
- 101
5
votes
4
answers
3k
views
Weird display on VGA monitor, Ubuntu Server 19.10 on Raspberry Pi 4
UPDATE: As I suspected lately, Ubuntu Server actually boots up. Nothing worked until I tried using an actual HDMI monitor instead of an HDTV or VGA monitor. I suppose the TV will work once I install a ...
5
votes
1
answer
23k
views
Setting WiFi up via the command line Ubuntu server 18.04.4 LTS - Raspberry Pi 4 Wireless connectivity
I have the Raspberry Pi 4 Model B and my choice of RAM was the 4GB. i don't have internet via the gigabit ethernet at the moment, all i have is my smartphone to share internet via a hotspot (wifi).
i ...
- 103