Development refers to the development of the Ubuntu source code through the implementation of new features and the fixing of bugs.

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Android Studio fails downloading SDK Components

I installed android studio using ubuntu-make like umake android after starting android studio, it asks some questions and then starts downloading SDK components, but it never finishes that ...
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Does Andriod Development obviate 32 - bit Linux

Recently I encountered the following error while trying to emulate android using cordova: ERROR: 32-bit Linux Android emulator binaries are DEPRECATED when attemping to run the Android emulator ...
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Why are workspaces disabled by default?

In the recent versions of Ubuntu, workspaces are disabled by default. Is there a specific reason for this. I know how to enable them, but I wish to know the reason why the developers choose to ...
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Potentil developer. ;) [duplicate]

I am a 16 year old boy from Austria which want`s to start developing apps for ubuntu (mobile). Are there some links for a newbie like me? ^^ Sorry if I am new. Just wanna try to develop and take a ...
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Error, even with sudo: “dd: failed to open ‘/dev/sda1’: Permission denied” (dd input piped from gzip)

My command which doesn't work: sudo gzip -dc sda1.image.gz | dd of=/dev/sda1 returns the following error even before I've had a chance to enter my password: dd: failed to open ‘/dev/sda1’: ...
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Unity8 Development install troubleshooting

First attempt at getting into development with Unity and in a Linux box. I was able to pull down the trunk and (I think) build its dependancies, but it doesn't feel like I've done this right and I ...
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GImP Plugin: unable to access GimpDrawble or Gimpimage resolution

 m trying to get image resulotion in a plugin I m writing. But when I call resolution function the plugin crashes saying image does not exist..... But I can access the drawble , plz tell if there us ...
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scope developing / how to change scope result inside perform_action

I became bit lost with how to set a result attribute or trigger scope search (refresh) inside Scope::perform_action method or in methods of ActivationQuery object. The idea is to change data in a ...
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How to cross compile the qtmultimedia-opensource-src for armhf?

Repost from https://answers.launchpad.net/ubuntu/+source/qtmultimedia-opensource-src/+question/264619 Cross I can't figure out how to build it with cross compiler (on trusty-amd64 for ...
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40 views

Where do I give ideas? [closed]

I just had an idea. Someone must have probably thought of this and I'm not sure where to write this but here it is. We drag a file onto another file and a new folder is created with both files inside ...
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Touch as IP camera

What is the easiest way to set up Touch device with cameras to share them via IP, so these cameras could act as video devices (webcams) of the Ubuntu desktop?
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QT Quick Test problem [duplicate]

I have a QML file and I want to test the function of this test , in this file I have some import like import ValueField 1.0 , import MyModule 1.0 and I need this imports So when I run the QT Quick ...
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ubuntu package developing trying to overwrite config of other package

I've build a custom debian package with shuold overwrite configs of lightdm (autologin). My install script (debian/install) contains the following lines: lightdm/* /etc/lightdm/lightdm.conf.d/ But ...
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Where are the headers with IOCTL numbers for ext4?

I am looking for ext4.h, or another file that contains EXT4_IOC_*. There is nothing in /usr/include or /usr/src. I have linux-headers-generic installed. I am on Kubuntu 14.10. Where are the headers? ...
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2answers
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LibreCAD. New versions

I am user of LibreCAD and I haven't seen any new version of it since June last year. But the new versions continue to release. These versions are for Windows and Mac. LibreCAD web page still says that ...
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563 views

Problem setting up Environment for 'make' command execution

I am trying to set up devkitPro for ARM use, but I continuously get an error while executing the last two commands. The commands are make and make install. The tutorials I am following: ...
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699 views

SSH keys from USB Stick

I have a couple of desktops, a couple of laptops and a netbook. Some of these devices still run windows. I use these machines to connect to Launchpad, where my projects are hosted. I'm really ...
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Question about libmatio-dev

I want to install libmatio-dev, but a specific version (1.3.4-2). Whenever I run sudo apt-get install libmatio-dev, I get 1.5.2 installed instead. How do I force the install of 1.3.4-2?
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What does it mean if (development branch) is part of the title?

I apologize for what is probably a stupid question, but my google- and stackoverflow-fu has failed to positively reveal the answer to my question: What does it mean if a branch (such as Ubuntu Utopic ...
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166 views

Ubuntu SDK, Ubuntu touch app: “Error: Error opening shm.”

I am building an app for Ubuntu Touch. It works well on desktop, but when I try to open it on nexus it starts opening a splash screen but immediately crashes. Here's the logs: t_shm() at ...
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262 views

Ubuntu SDK: How can I see error logs for my ubuntu touch app?

I've built an ubuntu touch app, it works well on desktop, but when I install it on the device and try to launch, it crashes. Where can I find error logs or any other output that the app can give me to ...
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Ubuntu SDK, QML: how do I create a vertical slider?

I am trying to create a vertical slider: http://developer.ubuntu.com/api/qml/current/Ubuntu.Components.Slider/ How can I do that? Just rotating it doesn't seem like a good idea, it messes up anchors ...
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Ubuntu SDK, how do I create a tree view in QML?

I have json data that defines comments that have children. I am trying to display nested comments(like in hackernews or reddit) in my app. What is the best way to go about doing it?
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How can I use emacs instead of Ubuntu SDK to write Ubuntu Touch Apps?

I want to use emacs and console tools instead of Ubuntu SDK to edit and debug my projects. Where can I learn about doing that?
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Import new package to older release

I have uploaded a new package to Debian. It has recently reached Debian unstable and Ubuntu development branch (currently Vivid). How do I get this new package into the currently supported stable ...
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How can I run arbitrary commands as part of a deb package install?

I'm creating a ppa deb package for a python module, replacing a pip package (which I also created), and I would like to run "pip uninstall" as part of the deb installation. How can I run "pip ...
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301 views

USB Enumeration Stress Test

I'm creating a USB device that runs my own custom stack, and I need to make sure that it works with any host or hub. USB-IF has their own official testing program, but it only runs on Windows and has ...
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236 views

How to add link buttons with label in quickly glade

I'm making my own application, I can add link buttons on quickly glade, but the link buttons dont have a label, they just have "button" written on them. How can I add my own label on the link buttons? ...
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how to implement the functions which are defined inside the conio.h

I wanted to use the conio.h header file in one of my C codes but as we know the header file is not available for Ubuntu, what should we do if we want to implement the functions if the header file ...
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Understanding ubuntu [closed]

I understand that Linux is an open source OS, in other words I have the ability to change whatever I want with the source code of the system. Where is the source code located? For example I would like ...
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Install multiple elasticsearch versions on 12.04

I have two projects using different versions of Elasticsearch, the first uses 0.9.x and the second will use 1.2.x What would the best way to install both versions so I can work on the two projects?
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What should I learn to contribute Ubuntu? [duplicate]

I want to know what can I learn to help Ubuntu? In development: Which languages? Which IDE? etc.a In design: Which software? etc. If you know other categories please answer. I know how to ...
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Are there dedicated folders for user made sources and libraries/modules?

This is a very basic question, yet I can't find anything relevant. Is there a standard directory where to put the sources of your projects and the location of the libraries/modules they use (which are ...
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Gnome Shell Extension Development

I do my first steps in developing gnome 3 shell extensions. Actually I try to realize this simple thing: I want to suppress the annoying "Application xyz is ready" notification. After a bit of ...
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What are the best practices when setting files and folder permissions as a php developer under ubuntu?

I have created and set the permissions to some files and folders under /var/www/mywebsite. For files 644 and for folders 755. I am the owner of those files and folders, since I created them ...
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Is it possible to develop Ubuntu Application using java

I am a Java Developer & want to develop application for Ubuntu. I also visited developer.ubuntu.com site and successfully installed Ubuntu SDK and Editor but it is on Unity code and HTML views. I ...
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537 views

Remove all development libraries

I've built a few apps from source which required development libraries. And when I installed them, they installed more -dev dependencies. Now I want to remove those libraries. The command sudo ...
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Android Eclipse In Ubuntu

I am having an Error When Launching Eclipse For Android Developmet. error while loading shared libraries: libz.so.1: cannot open shared object file: No such file or directory Pleae Help me to ...
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Can I use Ubuntu for Clojure development

I want to learn Clojure and I want to use IntelliJ and the Cursive plugin. Can I easily install all of these ? Roelof
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Error running Ubuntu Emulator

I'm getting the following error when I try to run Ubuntu Emulator, Begin: Running /scripts/init-bottom ... done. [ 10.407868] init: ureadahead main process (399) terminated with status 5 I even ...
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Porting Ubuntu Touch On Samsung Galaxy S2 Plus [duplicate]

Can i port Ubuntu Touch on samsung galaxy s2 plus i9105p? thanks
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Installation failed for API

I'm developing an app for sending OSC messages working through the outlet port 4444 and I am using a C API call Liblo. Project page: http://liblo.sourceforge.net Normal install it by running the ...
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What are “opt-in flavors” during development cycle?

Right now, 14.04 is in active development, the detailed Release Schedule of which is hosted here. One can see that the schedule says Alpha 1, Alpha 2 and Beta 1 are for opt-in flavors only. Can ...
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What happen to Kompozer? Is there an easy way to install in 13.10?

What happen to Kompozer? Is there an easy way to install it in Ubuntu 13.10?
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How do I register as a Ubuntu developer?

I want to contribute as a Ubuntu developer, and help out Ubuntu in any way I can, but don't really know where to register as a Ubuntu developer, or what the requirements/steps for being an Ubuntu ...
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Fastest way to reload graphics driver module?

I am trying to get my way around on graphics driver development, in this case for modifications on a DRM kernel module, called gma500_gfx. Every time when I have made a change to this driver, I start ...
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How to develop a Windows program?

I have just started using Ubuntu, but I need to develop an application, something small that can run on my work computer which HAS to run Windows 7. I need to make a application for my work that has ...
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What's Ubuntu's app development IDE?

What's Ubuntu's official IDE used to develop applications? Which language is preferred for Ubuntu apps?
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High-level library for Unity Dash?

I've wanted to write a GTK+ version of Unity Dash for some time. I think it could be useful for Xfce, Gnome Flashback, elementaryOS, etc. Before I start doing anything about it, I'd like to know if ...
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How to delete pre-installed Libreoffice from KDE?

I installed Libreoffice 4.2 (yes, beta release, much better) when I was on Ubuntu, but then, I installed KDE desktop and Libreoffice came together with KDE. So now I have 2 libreoffice installed, one ...