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Kazam: Best Screen Capture Software on Ubuntu - I've created some Blender video tutorial, i am using Kazam for record my desktop. I've try some screen capture software on Ubuntu, but i think Kazam is the best screen capture software on Ubuntu. Because simple and clean.

But, sometime kazam error on my machine. I've recording 5 minutes video but when i want to save the video, i can't save it. Kazam windows freez and i can't save it. I don't know why, maybe someting wrong with kazam, because RAM, HDD, Processor works! So i must stop recording every two minutes  and save the video before continue to next step. After that, i need to join video using Blender Video Sequence and render again to get final video.

You can using kazam for taking screenshot too. But i prefer to use shutter to take screenshot. Shutter only available on Linux, maybe someday will ready on Windows and Mac.

There are kazam feature:

• You can record everything on desktop or on a window, or some spesific area
• Can input audio from speaker or microphone
• Taking screenshot
• Output video as MP4, WEBM or AVI
• Autosave recording video

Install Kazam on Ubuntu

Any tips, trick, and review about kazam?

Install Eclipse on Ubuntu - I have a mobile application project using IBM Worklight. A tools like phonegap (maybe) so we can develop an application using html5 and can use for many mobile operating system . So i decided to use Eclipse for IDE, because eclipse is an application from IBM too. I think it's compatible for this project.

Download eclipse 4.2.2 for working with IBM Worklight, because this earlier version doesn't supported. I know it from eclipse marketplace. On this post i will share how to install eclipse on Ubuntu manually, because if you are using Ubuntu Software Center you just get 3.8 version. After download eclipse 4.2.2, follow this step to install

Install Eclipse on Ubuntu

1. Make sure java has been installed in your Ubuntu
   

    java -version

2. Extract downloaded file. After that, move eclipse folder into /opt/ folder. i move eclipse folder from home with code below
   

    sudo mv eclipse /opt/ 

   
   You must using sudo, because you can't copy without root permission into /opt/
3. Make a desktop file to launch eclipse
   

   sudo gedit eclipse.dekstop

4. Write the code below
   

   [Desktop Entry]
   Name=Eclipse 
   Type=Application
   Exec=eclipse
   Terminal=false
   Icon=eclipse
   Comment=Integrated Development Environment
   NoDisplay=false
   Categories=Development;IDE;
   Name[en]=Eclipse

5. Install on unity with running this command on terminal
   

   desktop-file-install eclipse.dekstop

6. Make a link, so you can run in like other application
   

   cd /usr/local/bin
   ln -s /opt/eclipse/eclipse

How to Setting VPN Client on Ubuntu - VPN means Virtual Private Network that can help you to hide your IP and location. So, hacker can't steal and sniff your personal identity or your financial data. With VPN you will be safe from security issues. Because many computer was infected by backdoor spyware that always sending private data to data center. So they collect and save your data that can used someday.

With VPN I can open the page that blocked from my ISP. So i am free to access everything on internet.  Be freedom in internet. Today, I am using Ubuntu 12.10, and on this post i will try to write how to setting up VPN on Ubuntu.

Search the VPN service, you can choose free vpn or premium vpn. After that you will gate administrative data about the VPN like gateway, username, and password. After get it, open your network manager and create new vpn connection (Point-to-Point Tunneling  Protocol (PPTP). Input the data from VPN (gateway, username, password) like this.

setting vpn ubuntu

Select Advance, and activate the Point-to-Point Tunneling  Protocol (MPPE) like the image below.

setting vpn ubuntu

After do that, connect to the internet first and then connect to VPN. So you will browse internet from VPN.

Menggunakan VPN di Ubuntu

Bumblebee project is an open source project for Nvidia graphic card that support optimus technology. I am using Nvidia GeForce GT540M that supported with optimus technology.  Here is step by step bumblebee instalation

Have you ever got this error message "Cannot Access PPA (ppa url) to get PPA Information, please check your internet connection"? But in the same time we can browsing some webpage and download files. Why we can't acces the ppa? After search on the forum i get the answer, it's because of what we type in terminal

For example in the screenshot below is

sudo add-apt-repository ppa:irie/Blender

cannot access PPA to get the information

We need to change all letters to lowercase, so we can add the ppa repository in our machine. The code look like this

sudo add-apt-repository ppa:irie/blender

After change all letters into loweracase, the ppa can be added

add ppa success

I hope can help everyone who are frustrated because can't  ppa to repository list :D

My brother has a tv tuner that has not been used. Now, i try to use it in Ubuntu 12.10. I try to search linux driver on hardware website but i am not found the driver. But i found an ubuntu package that can use for watching tv, the package called tvtime. To install this package just run

sudo apt-get install tvtime

tv tunner

Although there are a tvtime package, but the application does not run so well for my gadmei. I think because it was too old, about 5 years ago. There are a few things I do to fix the application to be compatible with the hardware I have. The problems that I experienced after the installation is

TVTIME not detect the video source from Gadmei. By default, tvtime detect video source such as a webcam on the laptop. We can figure out the problem by running tvtime in a terminal. Would appear an error message like this

videoinput: Driver won't tell us its norm: Invalid argument
videoinput: Can't get tuner info: Inappropriate ioctl for device
    Your capture card driver: uvcvideo [Laptop_Integrated_Webcam_2HDM/usb-0000:00:1a.0-1.4/19
    does not support full size studio-quality images required by tvtime.
    This is true for many low-quality webcams.  Please select a
    different video device for tvtime to use with the command line
    option --device.

To fix this, go sourcelist of tvtime in the folder / etc by running the command

 sudo gedit /etc/tvtime.xml 

search for code below

 <option name="V4LDevice" value="/dev/video0"/>

Change the video0 to video1 so the code will be look like this

<option name="V4LDevice" value="/dev/video1"/>

Before start watching we need to scan the tv frequency on our location :D. So we can save the frequency of  tv station in our area. To scan tv frequency, run this command to terminal

 tvtime-scanner

tvtime-scanner

After that just rung tvtime and you will can watch television in your ubuntu desktop.

watching television on ubuntu

Gimp is a image processing software such as Photoshop. Its function is not much different. You can make it for photo editing, croping and giving effect to the photo. In addition to the extensions that use XCF format, GIMP is one of the open source software that can be used in a variety of operating systems and FREE. With open source license, making GIMP has many useful plugins, one of which is the Save for Web.

save as for web

Save for web plugin is used to reduce the size of an image with a reduction image quality. No need to worry about the origin of the image is not visible compression rate is not high, if the high compression rate of the image will be visible rupture / boxes. There are at least three ways you can do to reduce the size of images with this plugin. Here are 3 ways.

Changing Extension / Format Picture, commonly used to compress images of various formats such as PNG, BMP, etc. image formats with a smaller size such as jpeg, or gif PNG8. Indirectly it also affects the quality of the image.

Reducing the image quality, the smaller the image quality size small anyway. However, the compressed image will be broken and the boxes appear, default compression quality is 85%. The greater the value of smoothing will make the image some blur, so it is not recommended if the image contains a lot of text.

reduce image quality

Resize the image, is the safest way to reduce the size of the image. By reducing the image resolution, image dimensions will be smaller but the picture quality is not diminished. I always use this feature before uploading to the website. Because the website does not require great resolution. The important thing is legible enough.

Resize image

For some people the size of the image file is trivial. Though sebenaranya this is important, because it affects the speed of access to the site. If only one or two pictures does not matter, but if you have dozens? Pretty damning is not it? Especially if uploadnya in hosting your own blog with a certain quota could cepet full disc. Although trivial but very useful, both for owners and visitors. So do not be surprised if that's a little tough to have a visit, because both know is how the internet connection in Indonesia, up and down: D

This plugin is intended for the web, as the name suggests. So that we do not need to stay long upload an image: D. For Ubuntu users, to get it simply by typing

sudo apt-get install gimp-plugin-registry 

the terminal. It could also open the Synaptic Package Manager / Ubuntu Software Center. For other operation system please visit Gimp Plugin Registry. I think this tool is a must for a blogger / web developer

We still need Microsoft Fonts like Times New Roman, Arial, and others in Ubuntu. Usually the font is used by some applications that Ubuntu still has nothing to do with windows like Wine. It is also used to display fonts are generally used in websites and documents. So even though the use of Ubuntu, we still need to install the font known as package-installer ttf-mscorefonts.

Microsoft fonts

Ubuntu is one of many Linux-based operating system, and I've used it about 3 years. Its growth is so fast. Releases twice a year, with the 04 code for April release  and 10 for a release in October. Currently, the latest version is 12.10, 13.04 version will be released next month. There are so many changes in terms of both appearance to its features with first Ubuntu that i use.

The many changes in Ubuntu, sometimes I prefer to use the old features than the new. Maybe not only me feel this. I want to share the old features that I use on Ubuntu 12.04, its Synaptic Package Manager & Gdebi Package Manager.

Ubuntu Software Center

Ubuntu software center is an application that contains a list of applications that can be installed on Ubuntu. So we do not need to look at the website to get the Ubuntu applications. Even so, sometimes the applications in Ubuntu Software Center is an application obsolete. Like Blender. Release version on the official website is version 2.66, but in the new Ubuntu Software Center version 2.62. Applications in Ubuntu Software Center not too update on applications that are not built in during installation. So we need a ppa of the software to get aplication up to date.

Ubuntu Software Center

Ubuntu Software center more attractive than its predecessor the Synaptic Package Manager. It comes with the software and the ease of navigation icons by software category. In addition the software has paid too, so we can simply buy applications and content using the Ubuntu Software Center.

With a better GUI, we can easily search for software by category. Unlike its predecessor which is less user friendly for the search software, especially for new users.

It is advisable not to install a lot of software using the Ubuntu Software Center, a growing number of waiting lists in the install process will make this application freez and not responding. It could be that the installation is not finished making us to reinstall the applications installed package as damaged.

Ubuntu Software Center also replace the function of GDebi Package Installer. An application that used view and install ubuntu software that uses *. deb. With a double click on the file to deb format, by default Ubuntu Software Center will execute a long load time.

Ubuntu Software Center

Synaptic Package Manager

It is the predecessor of the Ubuntu Software Center application that is less attractive. Contains a list of applications in the form of text with no pictures icon application, but it is also a lot of scattered library when we search an application. It's enough to make me confused when first using Ubuntu Karmic Koala.

Synaptic Package Manager

However, with this application I could know more about the applications and libraries for the application I was looking for. Not infrequently I find an application that is worth trying. Unlike the Ubuntu Software Center crashes when creating a waiting list for many applications install. With the synaptic package manager I have never experienced freez when install a lot of software at once. So that could be left out rather than wait for the download + install blank finish: D.

GDebi Package Installer

A simple application that works without a lot of the menu to see the package and install / install the application. Simple and fast, the word can represent GDebi. No need to wait long to install as it does in Ubuntu Software Center.

GDebi Package Installer

Therefore, until now I prefer to use the Synaptic Package Manager and Package Installer GDebi than the Ubuntu Software Center. Simple and fast. Everyone has its own experience with it. Apart from that, I'm sure the Ubuntu development team under Canonical will make Ubuntu better. So make make your Ubuntu machine comfortable to use.

CUDA™ is a parallel computing platform and programming model invented by NVIDIA. It enables dramatic increases in computing performance by harnessing the power of the graphics processing unit (GPU). Before we using GPU, we need to install CUDA Toolkit if you are using NVIDA card. I am using NVIDIA GeForce GT 540M with Ubuntu 12.04

NVIDIA Graphic Card

Before following this tutorial, you need to check on CUDA GPU. Is your hardware supported CUDA technology? If your hardware supporte CUDA GPU, check on your hardware spesifiaction on NVIDIA website, is the hardware is Optimus card? If your vga card is an optimus card, you will need to install bumblebee for the vga driver. Bumblebee Project have simple tutorial how to install it.