SDL init failure, reason is: No available video device in ubuntu 12.04 LTS

I recently upgraded my ubuntu 10.04 LTS to ubuntu 12.04 LTS. AVD stopped working afterwards in my eclipse. ERROR message: [2012-10-03 16:16:11 - xyzapp] Android Launch! [2012-10-03 16:16:11 -...

Setting/Installing up OpenCV 2.4.6.1+ on Ubuntu 12.04.02

I had previously used OpenCV 2.4.5 with some certain configs and packages on Ubuntu 12.04.1 but had issues upgrading to OpenCV 2.4.6.1 on Ubuntu 12.04.2 I would like to share some ideas (a...

OpenCV 3.0 Trouble with Installation

I need OpenCV3.0 since it supports some new functions which I need. I used the following code for installation (I had successfully installed OpenCV 2.4.9 using this code. But for OpenCV 3.0, while...

How to change qtconfig option in 'cmake' to qtconfig4?

While configuring krita, I am getting a cmake error saying Unable to compile a basic Qt application. Qt has not been found correctly. I think the reason is there is a conflict between the QT5 and...

Segmentation Fault (Core dumped) Wt With Qt helloqt

I Wrote before but the details was not explained. I explain step by step what I do; Witty installation Guide Ubuntu I did in order what ever said in this page. sudo apt-get install gcc g++...

Is it possible to use mysql5.5 and mariaDB 10.0 in same machine?

I wanna install mariaDB 10.0 in server. but it's already installed mysql5.5. so i tried to install mariaDB to use apt-get command. Building dependency tree Reading state information... Done The...

Mint17.2 install py2exe

I tried downloading the .exe files (problem: can't find a version 2.7 of python on computer + can't add the directory) I tried using the: pip install...

LibQt4-core has unmet dependencies

I'm trying to install libqt4-core, but it seems that for the dependencies, I have more recent versions than are compatible with this package. When I use sudo apt-get install libqt4-core my output...

How to fix error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

I'm trying to install odoo on a fresh installation of Linux on a VirtualBox machine. I have entered in the commands found here as is: Odoo Development Read the Docs. The following command is what...

Where can I find the QWebPage and pymongo in python3.4?

I'm working on some code that requires a number of packages from python qt 5. I get a missing package error upon importing the QWebPage module: from PyQt5.Qt import QWebPage,...

Why PyQt4 DialogBox OpenFileName freeze until other threads have finished under Linux

Under Linux, the QFileDialog.getOpenFileNames() freeze in a script who have no other GUI until other process have done, even if it runs in a separate thread or Qthread. I've tested under Ubuntu...

Using gitlab ci with docker compose leaves me with container generated folders gitlab can't remove

I'm trying to set up gitlab ci using the method documented here and testing a rails 4 app with it. The problem I'm having is that the test will run once and build the image and containers, but...

Unmet dependencies? Broken packages held?

I am trying to get a vpn up and running and am doing so through the shrew soft client. When I go to run the command: sudo apt-get install libqt4-core libqt4-dev libqt4-gui qt4-dev-tools I get...

Sudo make install permissions issue on Ubuntu 14.04

I have amended a script from https://github.com/jayrambhia/Install-OpenCV/blob/master/Ubuntu/2.4/opencv2_4_10.sh to try to install OpenCV 2.4.13 onto a vm running Ubuntu 14.04 where I have sudo...

TA-Lib Install Error

I am trying to install TA-Lib on Debian Jessie using pip. However I am encountering the following error: #include "ta-lib/ta_defs.h" ^ compilation terminated. error:...

Rails generate: "Expected string default value for '--helper'; got true (boolean)"

Edited 12-21-16: Upon using rails generate or destroy, errors of the type: Expected string default value for '--jbuilder'; got true (boolean) Expected string default value for '--helper'; got true...

Installing Scrapy throws exceptions again and again

I've tried to install Scrapy the usual way: Python 2, pip, pip install Scrapy I read that Python3, Windows10 and 64bit are not so good for Scrapy so I've installed 32bit Ubuntu to Oracle...

WebDriverException: Message: unknown error: unrecognized Chrome version: HeadlessChrome RobotFramework

I am trying to use google-chrome headless feature in my ubuntu machine to run selenium scripts headless .Following is the script that I am running #headless.robot *** Settings *** ...

Error while installing sentry on server python

I looked up all over the google, installed many packages. sudo apt-get install build-essential autoconf libtool pkg-config python-opengl python-imaging python-pyrex python-pyside.qtopengl...

Broken apt dependency tree

I was upgrading Ubuntu 16.04 to 17.04, when some packaged failed to upgrade. This left the apt dependency in a broken state. I tried some other answers online, but I am afraid this only...

Dockerizing a Rails application with docker-compose

Hi I am trying to adapt my-app to docker. My app stack is Ruby 2.4.0 Rails 5.0.1 Postgres 9.5.8 I created a Dockerfile to create an image of my-app FROM ruby:2.4 RUN apt-get update && apt-get...

Installing tsne in Google Colab notebook: error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

I am trying to install the tsne library in a Google Colab notebook. Based on other questions, I have tried installing the following to no avail: !apt-get install libblas-dev libatlas-base-dev...

Installing PyQT5 on Ubuntu16.04

I am trying to install python-pyqt5 in my PC with Ubuntu16.04. When I install like sudo apt install python-pyqt5 The system said, it is already installed. Reading package lists... Done Building...

Assets Precompile with Docker on AWS Elastic Beanstalk

I'm running a rails (4.2.10) application on Docker running on 64bit Amazon Linux/2.12.6. The application is running successfully, however, the asset pipeline is not. Oddly, I'm not receiving any...

Rails & Docker: configure bundler to run bundle install in a docker build for Rails.4.2.6?

I am having so much trouble with docker. It seems to be a pattern. I have a dockerfile which installs Node.js and Yarn from source repositories fine. I install ruby from the get-apt repositories...

Apache Airflow : airflow initdb results in "ImportError: No module named json"

On Ubuntu 16.04 with Python 2.7 default version, I am trying to install Apache airflow but ran into several issues and currently I see on apache initdb Traceback (most recent call last): File...

Raspberry Pi 4 pip install opencv-python

I try to install opencv on my raspberry pi 4 pip install opencv-python I get the following error Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple Collecting...

Select timeout with Python OpenCV Raspbian RPi4 with single USB Webcam

First my opencv installation process: https://www.pyimagesearch.com/2019/09/16/install-opencv-4-on-raspberry-pi-4-and-raspbian-buster/ sudo apt-get install -y vim bc #gain more SDCARD space;...

How to install Qt4 and Qt5 alongside each other Ubuntu 1804

I have some software packages that depend on qt4. I installed Qt 4 just for those packages with the command sudo apt install qt4-default. I want to install qt5-default, but when I run the command...

Raspberry pi 64 bit Os showing Unable to locate package libjasper-dev. how to fix this?

I am using a raspberry pi 4. And I installed a 64 bit (not 32 bit) Raspberry Pi OS. When I tried to install libjasper-dev using the command 'sudo apt-get install libjasper-dev' as a part of...