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

learn more… | top users | synonyms (1)

0
votes
1answer
23 views

C programming in Ubuntu SnappyCore

I recently downloaded ubuntu snappycore OS. I wonder if i can install a GNU compiler for developing C applications. If I can, how do I do it?
-1
votes
0answers
18 views

snapd will not configue

:~$ sudo apt install snapd snap- Reading package lists... Done Building dependency tree Reading state information... Done Package 'snap' is not installed, so not removed snapd is already the ...
0
votes
0answers
14 views

Single User Mode [Snappy Ubuntu Core]

I am trying to boot an Intel Nuc running Snappy Ubuntu Core into single user mode. I have tried the usual method, but have gotten no where. Any suggestions for getting this to work would be greatly ...
5
votes
1answer
43 views

Add custom AppArmor rules to snap?

I'm trying to get an application working with snapd and have run into some issues regarding AppArmor permisions. It seems that in order to have my app be fully functional, it needs some custom ...
1
vote
1answer
17 views

Ros with snappy

I'm following this example: https://developer.ubuntu.com/en/snappy/build-apps/ros-snap/ The program works fine with roslaunch, and I'm able to create and install the snap. However, when running the ...
8
votes
1answer
66 views

How can I iterate more quickly when creating a snap?

I am working on a snap of a bigger piece of software and building the snap, removing the old one, installing the new one just takes a very long time. I would like to iterate over creating the snap ...
0
votes
0answers
20 views

NTP synchronisation in Ubuntu Core 10

How can i configure a proper NTP synchronization in ubuntu core 10. I am running the following version ubuntu-core 2016-05-24 10 ubuntu I tried using root@localhost:/home/...
0
votes
0answers
35 views

Snappy with ros

Im following the https://developer.ubuntu.com/en/snappy/build-apps/ros-snap/ example to test before i "snap" my own creation. However, at the end I'm not allowed to run: $ sudo snap install ros-...
1
vote
0answers
32 views

Ubuntu snappy core launcher failed: error loading shared libraries librt.so.1 file: no such file or directory

I'm running Ubuntu Snappy Core on a Dell IoT Edge gateway. I have installed the following Debian packages: libnm-glib pptp-linux pppor usb-modeswitc libcurl3 I restarted the system. Now the ...
0
votes
0answers
37 views

How to implement or call up BLUETOOTH in Snappy Ubuntu of Beaglebone Black

Im not sure this questions is weird or not, im very new to IoT, really in need of advices in this matter. I can call out (scan) bluetooth in the default debian OS in beaglebone with a bluetooth dongle ...
0
votes
1answer
24 views

Snappy and Robotics

I am interesting in the Snappy environment for robotics development with the raspberry pi and other such hardware. I am very new at all of this, so what are the benefits of snappy in iOT versus, say, ...
2
votes
2answers
30 views

Sharing resources between snappy packages

Sharing resources My first example snap build is a java server I developed. I managed to create a snap that contains the jre, my server and the service startup. Everything works fine. The snap file ...
0
votes
1answer
26 views

Ubuntu Snappy XAMPP Pi2

Is there a way to install xampp in Ubuntu snappy 14.04 Raspberry Pi 2?
0
votes
0answers
37 views

Internal server error when retrieving files from the archive in lxd

I'm trying to build a package with snapcraft cleanbuild which uses lxd to build a snap in a container. Unfortunately it fails pretty quickly with an http 500 error. The host is able to connect fine, ...
4
votes
1answer
111 views

Testing clean snapcraft build

I've made a snapcraft.yaml for an application. It builds on my computer but a friend finds it doesn't build for him. How can I make sure a snap builds for everyone before I share it?
2
votes
1answer
73 views

How do system services work in snaps

When creating a snap, and according to the syntax of the snapcraft.yaml file, the daemon keyword can be added to specify that the app will be run as a system service. As an example of such declaration:...
5
votes
1answer
131 views

How do I debug snaps?

I've successfully built a snap that I can install on my system. However, it crashes upon start, and I'm not quite sure where to start debugging that crash. What are the different approaches to ...
5
votes
1answer
126 views

What is devmode for snaps?

I have heard about the ability to use snaps in developer mode. What is this mode and what can I use it for?
1
vote
1answer
155 views

Ubuntu 16.04 snap install error

I'm having problems installing snap-packages on Ubuntu 16.04 x64. For example, when I try to install hello-world, it downloads ubuntu-core and then throws this error: ~$ sudo snap install hello-...
1
vote
1answer
79 views

Where can I find Ubuntu 14.04 core images?

All the internet points me to here (including the release notes) but the link is broken. Anyone knows where to find it?
0
votes
1answer
76 views

Applications can't connect the X server to launch

I can install and run CLI snap applications without issues, but when trying to run graphical apps it seems they can't connect to the X server, what am I doing wrong? keepassx: cannot connect to X ...
1
vote
1answer
140 views

Install Unity8 apps on Ubuntu 16.04

Is there a way to install Unity8 apps like terminal and file explorer as snappy packages on Ubuntu 16.04LTS? I am not looking for a PPA with precompiled binaries, but for the actual snappy packages. ...
0
votes
1answer
75 views

How to flash Ubuntu-core Snappy on Artik-5 (v 0.5)?

Artik 5 already have an OS fedora 22. I followed the link to boot from SD card, and got success: https://developer.ubuntu.com/en/snappy/start/samsung-artik-iot-modules/ But I cannot flash Ubuntu-core ...
0
votes
1answer
44 views

Mounting a drive Ubuntu Snappy

Seeing as the Snappy Ubuntu filesystem is so locked down I was wondering whether one can mount and access an external drive in Ubuntu Snappy?
1
vote
1answer
261 views

Why are there no new Ubuntu (core) Snappy releases?

I'm looking at the image channel guide for developers of Ubuntu Snappy Core. The only release available is 15.04. To me this seems odd; on the desktop and server side there has been a 15.10 and a 16....
1
vote
0answers
17 views

Is it possible to run and show the app on a device with snappy core?

The question is as simple as show the app writen for snappy/ubuntu core on a device running snappy/ubuntu core. Like the Raspberry Pi 2. Is this possible or am I better off running Ubuntu Mate on the ...
0
votes
1answer
95 views

ubuntu 16.04 snappy core and opening pdf files

Is it possible to have all pdf files open in a snappy core project / application to prevent infection of the main machine OS? If so how? PDf files are increasingly being infected with some type of ...
1
vote
2answers
53 views

Creating own snap images

I see some similarities between Snap and Docker. I cant find on internet any guide how to create snap image, like image in Docker. How to create it? I want to build snap with some old libs and old app ...
1
vote
1answer
105 views

installed package with snap - command not available

I saw that tmux is available with snap find and apt-cache. I decided to install with snap. Howto use now tmux? I am normal desktop user, not cloud computing. # snap error: Please specify one ...
0
votes
2answers
188 views

Console login on ubuntu-core-16.04-core-armhf.tar.gz

I'm running ubuntu-core-15.10-core-armhf.tar.gz on a arm evaluation board. Without any change the board boots up ad ask login on ttyPS0 (Started Serial Getty on ttyPS0.). If I try to use ubuntu-core-...
8
votes
1answer
227 views

Where can Ubuntu snaps write data?

Applications packaged as snaps in Ubuntu are installed (mounted) under the /snap/$SNAPPNAME location. Everything under /snap is mounted as a read-only file system, thus applications cannot write to ...
6
votes
1answer
77 views

How are Ubuntu snaps updated and upgraded?

I know I can upgrade an individual snap with the sudo snap refresh $SNAPNAME command, but I'm wondering whether there is a single command to upgrade all snaps at once. Or are they upgraded ...
1
vote
1answer
53 views

Will the new snap package make `Ubuntu Make` obsolete?

Ubuntu Make is a tool to install some latest versions of popular developers tools. At least more recent versions then the repository is offering. It is invaluable for e.g. Arduino IDE. If I ...
8
votes
2answers
354 views

How to update all Snap packages

I know that I can update a snap package using sudo snap refresh <package> But there is a way to update all snaps, like sudo apt dist-upgrade
2
votes
4answers
198 views

Can't install snap after removing it

I'm pretty new to snaps, so I didn't know if it was a bug or if I was missing something. I installed a Snap via "sudo snap install ubuntu-clock-app" then I removed it via "sudo snap remove ubuntu-...
2
votes
1answer
97 views

Where are the Ubuntu Core Snappy images?

So the final release announcement has been made by Canonical but the Ubuntu Snappy Core images are nowhere to be found. Previously they could be found under 15.04 at releases.ubuntu.com now that is ...
4
votes
1answer
500 views

How to use snaps via the CLI and GUI?

So, I have upgraded from my 15.10 to 16.04. I have managed to install some snaps, but now I am wondering, how do I launch them? Typing their name in CLI did not help. I tried: ubuntu-core-launcher ...
2
votes
1answer
121 views

Will a sideloaded snap get upgraded to a newer version in the store?

I grabbed youtube-dl from the snappy-desktop-examples. I then built a snap with snapcraft and installed it: If/when youtube-dl is uploaded to the store, what happens, do I need to explicitly upgrade ...
3
votes
1answer
530 views

OpenGL error in Snaps Ubuntu 16.04

Snap packages are failing to launch the UI complaining of libGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast Unrecognized OpenGL version Unrecognized ...
2
votes
2answers
481 views

How to run a command in a snap package

I have read some tutorials about Snapcraft and snappy and I am really excited about it. I am using 16.04 and used snap find to find and install the ubuntu-calculator-app snap. But I don't know how to ...
0
votes
1answer
97 views

Docker on Ubuntu Core - docker.service not found

I am trying to get docker working on Ubuntu core using snappy to install. I am following this guide. My VM is behind a proxy but using http_proxy env settings and sudo -E I seem to be able to get ...
4
votes
1answer
481 views

Is Snappy Core available for Raspberry Pi 3?

If it's available, I can't seem to find it on the site. If it's not, can someone please link me to as much information as possible so that I can track progress on developments? Thanks.
4
votes
2answers
145 views

How to build multi-arch snaps

I've got a snap that I'd like to build for multiple architectures. Right now, in the snapcraft.yaml file I define a wrapper as the binary to execute, which sets up environment variables required for ...
1
vote
1answer
276 views

How to Upgrade Ubuntu core snappy from 15.04 to 16.04

I have Ubuntu core running on a Raspberry Pi 2 stuck on Linux Porzellangardine 4.2.0-1024-raspi2 #31-Ubuntu SMP Tue Feb 9 11:44:25 UTC 2016 armv7l armv7l armv7l GNU/Linux No LSB modules are available. ...
4
votes
1answer
58 views

How to package a browser plugin and a gui app in a snap package

My app is a gui app (qt) and a browser plugin. The plugin is used only for firefox. When the user clicks a button I want to open my gui-app. I would like to use a snap package to do this, but I can ...
0
votes
1answer
103 views

Let's encrypt on Ubuntu Snappy

Just got my first Ubuntu Snappy running on a Raspberry Pi 2 and would very much like to enjoy Let's encrypt on it. I got it working on my other web server, but feel that this might not apply on Snappy ...
4
votes
1answer
40 views

Do the ubuntu core/snappy images have checksums/hashes?

It's not at all clear from the site. How are you supposed to reason about security if the base OS images aren't authenticated?
0
votes
0answers
90 views

How to use dnsmasq on Ubuntu core snappy

On the snappy store I found dnsmasq which would be useful to access webservers running on lxd. When I installed it, it didin't do any change on the system. When I entered the /apps/dnsmasq-arm.howy ...
2
votes
1answer
52 views

How do I set up a cron job on Snappy?

If I run sudo crontab -e I can edit the crontab, but it's read-only so nothing gets saved.
1
vote
1answer
82 views

Migrate owncloud data+db to Ubuntu Snappy?

I'm about to get my hands on a Pioneer Raspberry Pi drive running Owncloud 9 on Ubuntu Snappy 16.04. I want to move my old owncloud instance to this new device, I just don't know how. Currently I'm ...