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Questions tagged [ubuntu-core]

Ubuntu Core is a minimal version of Ubuntu intended for large-scale deployments, bringing transactional updates through the "snappy" packaging system.

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Connot tether iPhone lightning port to Ubuntu Core 16 on Raspberry Pi 3's USB port for Internet connection

I'm trying to get my Raspberry Pi 3 running Ubuntu Core 16 tethered through it's USB port with an iPhone's Internet connection (LTE data connection) using it's Lightning port using the commonly ...
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1answer
73 views

Broken snap system after upgrade to Ubuntu 18.10

Please help to install all needed packages to run snap files and integration with Store Here is my errors: snap list 2018/12/09 11:36:41.694959 main.go:162: argument "abort"'s "<смена ID>s" ...
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1answer
14 views

How to proceed further in Ubuntu Core after configuration?

I have installed Ubuntu Core on KVM using This link And I have also added the SSH keys on my Ubuntu SSO account. And now this screen is shown: The screenshot after the configuration But how do I ...
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1answer
37 views

Broken snap core module

All my snaps were deleted by mistake. After that all my apps are not working any more. After investigation using snap list command, I found that all my snaps are broken I fixed all snaps using ...
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53 views

Serial port permissions in Ubuntu Core 16.04

I have installed Ubuntu Core 16.04 (GNU/Linux 4.4.0-135-generic x86_64) in a industrial PC Dell. I'm running Node-Red and now I need to connect serial ports to be read on the PC. When run node-red ...
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23 views

Adding options to resolv.conf on Ubuntu Core

I would like to change the DNS timeout in resolv.conf on Ubuntu core. The resolv.conf is generated by resolvconf from the files in /etc/resolvconf/resolv.conf.d and the interface config. The files ...
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16 views

Can I run a python package with snap on Ubuntu Core?

I wrote a python package on a Debian-machine that I am trying to port over to Ubuntu Core (it comes preloaded on the hardware I want to use). On Debian, I was able to simply pull my code from git and ...
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1answer
80 views

How to start a python file with Ubuntu Core 16 and Raspberry pi

How can I start a simple .py in Ubuntu Core 16 and Raspberry Pi? because I'm sitting since 10 hours to get a simple python file running. What I tried: Set it up with snap classic and sudo apt-get: ...
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1answer
25 views

What is the scheduling mechanism using by Ubuntu core

What is the scheduling mechanism using by Ubuntu core. Is it Completely Fair Scheduler(CFS) ??
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21 views

Multiple loop devices in Ubuntu 18.04 [duplicate]

My system monitor shows a high number of devices like /dev/loop1. Is this normal/correct? Where do they come from and what are they good for?
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82 views

Ubuntu Core Pi Installation: x509 certificate has expired or is not yet valid

I am flashing Ubuntu core on a Raspberry PI 3. I followed the steps described in the website https://developer.ubuntu.com/core/get-started/raspberry-pi-2-3. When the configuration reaches the profile ...
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I am new to the ubuntu core and snappy community. I want to create snap of the 3 applications in which I have few queries

I want to create snap for the 3 applications which are dependent on each other for the inputs. So can I create single snap of all three application together and provide three binaries in .yaml file? ...
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56 views

Does “ubuntu core” os support ftp?

I am gathering information for my project about "Ubuntu core " OS feature Please share infomation about FTP in Ubuntu core OS. Does Ubuntu Core support FTP?
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1answer
41 views

Ubuntu Core for non eMMC Intel NUCs

Is there any method to install Ubuntu Core onto an Intel NUC without eMMC ? I have a bunch of older NUCs that don't have the eMMC storage; I'd like to install core on the hard disk, is that ...
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213 views

ubuntu core specifically for pi 3 B+

Please can someone build a working image for Raspberry pi 3 B+ ? There are many answers dismissing this saying use the ubuntu-core-16-pi3.img.xz This doesn't work for pi 3 B+ (the current version ...
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1answer
83 views

'Refresh' Ubuntu Core ssh keys

I have already done the initial console-conf for a DragonBoard 410c using only one key in my Ubuntu SSO account. I would like to refresh those keys that are allowed on the board. I have tried just ...
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1answer
243 views

Ubuntu Core Raspberry Pi 3 Image not working on Raspberry Pi 3 B+ [duplicate]

Is there an Ubuntu Core image for the Ubuntu Core on Raspberry Pi 3 B+? When I use ubuntu-core-16-pi3.img.xz on my Raspberry Pi 3 B+, the red LED lights up solid, and I see the rainbow screen. I ...
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1answer
59 views

How do I switch back and forth between Ubuntu Classic and Core

To switch to Ubuntu Classic from core: sudo snap install classic --devmode --edge sudo classic But how do I switch back to core? I acknowledge that the purpose of Core is for IoT but Classic is ...
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1answer
61 views

Ubuntu Core image for IoT2020

I want to install ubuntu core on a IoT2020 device (by Siemens) [1]. I couldn't find any Ubuntu Core images or Gadget Snaps for this device, but after a quick web search it seems I can create my own ...
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1answer
100 views

SocketCAN device on Ubuntu Core

I'm currently trying to use a SocketCAN-enabled device (Kvaser USBcan Light 2xHS) on a Dell Edge Gateway 3002 running Ubuntu Core 16. This CAN interface has been tested on Ubuntu Desktop successfully....
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31 views

Power on Bluetooth in Ubuntu Core when boot

I want to "power on" the bluetooth interface when the Ubuntu Core boot up. I tried the https://wiki.archlinux.org/index.php/bluetooth "auto power-on after boot" tutorial but it not worked. What I ...
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1answer
58 views

Copy Ubuntu Server 18.04 to other Ubuntu Machine

Am having Ubuntu Server 18.04 core with LAMP and other supporting packages installed. I want to migrate all of its content files and installed packages to a other machine with the same Ubuntu Server ...
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29 views

Dell Gateway 5000 with Ubuntu Core 16 doesn't identify sim card inserted in the slot

I have Dell Gateway 5000 with Ubuntu Core 16 installed in it. I am inserting a sim card in the slot, but the Gateway doesn't identify it. The led indicating the mobile network is off. The sim card is ...
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2answers
79 views

Can i install ubuntu 18.04 on this specs Dell 3521 core i5 ram 8 hd 1 terabyte amd 2 gb ?! [duplicate]

I need to install ubuntu on my dell 3521 core i5 Ram 8 gb Hd 1 terabyte Vga amd 2 gb Windows 7 ultimate Can it working fine or should i get an older version
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106 views

Is it possible to make a graphical snap for Ubuntu Snappy on the RPi?

I would like to know how to make a snap with a GUI for the raspberry pi running Ubuntu Snappy Core. I have unfortunately not been able to find any good resources on this, if anyone knows any, it would ...
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Installing a web server on Ubuntu Snappy Core

I acknowledge that this question may have been asked before, although I am asking it again because no good answers were given and it has been a while since it has had any activity (about 2 years). I ...
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25 views

Can't make Dell Gateway 5000 with Ubuntu Core 16 as Access Point.

I am working on Dell Edge Gateway 5000 series and have installed Ubuntu Core 16. I am trying to make it as Access Point. I have inserted a sim card in it and have created a connection with the command ...
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1answer
446 views

a start job is running for wait unti snapd is fully seeded - 18.04 install

I am attempting to install 18.04 from a USB stick. The system sits timing with the following message:- "A start job is running for wait until snapd is fully seeded xxxmins / no limit" I am no Linux ...
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0answers
29 views

Unable to install ufw as a snap on Ubuntu Core 14

I unpacked the Ubuntu Core 16 AMD64 image in a virtual machine,1 completed the setup menus, then immediately tried to install ufw as a snap. After a couple of minutes, I get an error: root@localhost:...
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0answers
676 views

Remove old snaps from cache

When I install a snap with snap install <SNAPNAME> then it is being downloaded and mounted. When I remove it with snap remove <SNAPNAME> then 'everything' is being deleted like the snap, ...
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0answers
91 views

Setting up a DisplayLink display on Ubuntu Core running on a Pi3

I am trying to get a DisplayLink (USB monitor Lilliput UM70) running on a Pi3-B. Currently, it is running Ubuntu Core, but I can switch to something else if it makes more sense to run something like ...
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1answer
312 views

Does snappy core work on raspberry pi 3B+

I have got a raspberry pi 3B running canonical's snappy core on it. The new raspberry pi 3B+ is out. Before buying it(would like to use one of it's new features) I would like to know if anyone already ...
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1answer
774 views

Set static IP on Ubuntu Core

I'm new to Ubuntu Core. On first login I selected the option: Will use DHCP for IPv4 Now I'd like to change my machine to use a static IP to be easier to log in remotely. I ran sudo console-conf ...
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1answer
26 views

Why is my Ubuntu Core 16 in an endless config loop?

Ubuntu CORE 16 on Orange Pi Zero (armf). Downloaded and registered. Found that on fresh image, with no snaps installed, eventually the device drops its IP address and cannot be sshed into. That ...
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1answer
1k views

How to install Resynthesizer Plugin in GIMP snap?

I've installed a Gimp 2.10.6 snap on the Ubuntu 18.04 from the Ubuntu Store and I want to add the Resynthesizer plugin to it. What I did is: Downloaded the zip file from this GitHub repo: https://...
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79 views

Installing Ubuntu core or desktop on Intel Edison

Ubuntu for IOT mentions several compatible boards but not Intel Edison. Can Ubuntu for IOT be installed on Intel Edison?
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Ubuntu Core images for Artik 530 / 530s

Are there any plans on providing Ubuntu Core images for Artik 530 and Artik 530s? The images listed in https://developer.ubuntu.com/core/get-started/artik-5-10 seem to be for Artik 520 and don't boot ...
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0answers
19 views

Why would I not not be able to connect to Core device post update?

I built an Orange Pi Zero with Ubuntu Core. I snapped in Mosquitto and Node-Red. Node-Red does not come as a service so I started Node-Red with: sudo snap run node-red I then created a small ...
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1answer
465 views

Can't Install Ubuntu 18.04.1 - issues with snapd and snappy daemons

Installing Ubuntu 18.04.1 Desktop on a a Lenovo M58p Intel C2D machine. Boot process stalls with the following console messages (repeating, timing out, and then re-attempting): "Start job is running ...
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1answer
61 views

Why the ssh error trying to log into orange pi running ubuntu core?

After configuring an Orange Pi Zero with Ubuntu Core it fails on attempts to ssh into it with the error in image. I am using TerraTerm and pointed the private key file to the one created using for ...
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0answers
18 views

Looking for a method to have two users on Classic confinement devmode (Ubuntu Core)

I'm on a DragonBoard distro of Ubuntu-Core. I want to have a second member of my team (in addition to me) be able to collaborate on development of our project in Ubuntu Core, via Classic mode. Is ...
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0answers
15 views

Why classic mode in Ubuntu Core takes so long with no internet

When my device has internet access I go into classic mode (sudo classic) and the command is executed pretty quick, but when the device is offline, it takes around 20 seconds to go into classic mode. ...
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0answers
158 views

Unable to configure proxy settings in /etc/environment - file is read-only

I'm trying to get Ubuntu Core 16 to use a proxy to talk to the snap store. When attempting to edit /etc/environment, I'm unable to save my change, due to it being read-only. (The file permissions ...
0
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1answer
20 views

strace on Ubuntu Core

How do I get strace running on Ubuntu Core? I installed the strace-static snap (there is no strace snap), but it fails when attempting to run it: # strace-static ls /snap/strace-static/18/bin/strace:...
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0answers
188 views

Installation of c compiler on Ubuntu Linux [duplicate]

How do I install GCC 8 on Ubuntu LTS 16.04.3?
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0answers
128 views

Can't ssh to Ubuntu Core on Raspberry Pi 3 with public IP

When I try to ssh to my Ubuntu Core Raspberry Pi 3 using its private IP (i.e. 10.x.x.x) it is able to connect, but when I try remotely from its public IP or hostname, it says ssh: connect to host &...
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0answers
28 views

Ubuntu-core image for ONIE

I would like to install ubuntu core via ONIE on my s6000 switches. Wondering if there is someone who can chat with me about how we can construct/deconstruct an ubuntu core image to work with ONIE ...
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1answer
33 views

Not able to create snap with executable

I want to create a snap with snapcraft. I have no source code, just one ready to use executable (application/x-executable) and one shared library (.so). The user later on should simply type in "test1" ...
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0answers
64 views

Ubuntu core: snap core repeatedly mount and umount

When I boot up Ubuntu core OS on my board with arm64, snap core repeatedly mount and umount like below, I have no idea why it happens. Mounting Mount unit for core, revision 4915... [ OK ] ...
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0answers
222 views

Segmentation fault (core dumped)

When i tries to open Spider(python IDE), Every time i got this error Segmentation fault (core dumped) ,What should i do.I tried different methods but could not resolve. Should I reinstall it or what.