Frequently Asked Questions

ಕನ್ನಡದಲ್ಲಿ ನೋಡಿ

About Ubuntu
Click here for Ubuntu FAQ

LibreOffice
Click here for LibreOffice FAQ

Mozilla Thunderbird on Ubuntu
Thunderbird FAQ

how to type knnada in freemind
 Open Freemind Ubuntu Menu Applications > Office > Freemind Click on Menu Item File > New (CTRL N) Click Menu Item Tools > Preferences, a window like the example below appears Select Defaults Tab In Default Font type in Lohit Kannada

Click Save, the window below appears, click ok.

Close and restart Freemind Application

To type in Kannada Open Open Office Writer Type the words in Kannada using iBUS Copy and paste to Freemind.

Where can I get the Tunga, Lohit Kannada and other UNICODE fonts?
Lohit Kannada is available on Lohit Kannada. Tunga is part of Windows operating system. Information on downloading UNICODE fonts is availabile on the Public Software website.

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My Kannada documents do not open with the Kannada script. What do I do?
To open documents typed with Nudi or Baraha fonts, those fonts must be installed on your computer. If you don't have the required Nudi fonts, download them from here. Follow the steps below to install the downloaded fonts on your system. Click Alt + F2 and type sudo nautilus and select Run in terminal. A terminal window will open prompting for the password. Please enter the password and press enter. A file browser will open. On the side pane (if no side pane is visible, press F9), double click File System, then double click on the usr folder, then on the share folder and then on the fonts folder. Now the location bar would show /usr/share/fonts. Paste the copied fonts in the fonts folder. <li>Fonts will now be installed on Ubuntu.</ul>

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How do I install fonts on Ubuntu?
Once you download the font, double-click on it. In the right down corner there is an "Install" button just click it and your font is installed.

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How do I download and instal Unicode fonts on Ubuntu and Windows?
Red Hat has released five Indian language fonts as open source licensed under the GPL. The fonts are named Lohit which means Red in Sanskrit. Currently, the font family supports 16 Indian languages: Assamese, Bengali, Gujarati, Hindi, Kannada, Kashmiri, Konkani, Maithili, Malayalam, Marathi, Nepali, Oriya, Punjabi, Sindhi, Tamil, and Telugu. Now, Fedora Project and its contributors took the responsibility to consolidate the further efforts and improvements of the Lohit fonts. Lohit Fonts are Unicode compatible.

<ul>Steps to install Lohit Kannada or any other fonts on Ubuntu: <li>Click on Applications -> Accesories -> Terminal</li> <li>At the $ sign, please type $sudo apt-get install ttf-kannada-fonts</li> <li>Enter your password when prompted (you'll have to key in your password, it will not be visible at all).</li></ul> <ul>  OR <li> Click on Applications -> Accesories -> Terminal </li> <li> Type sudo nautilus then it will ask your login password, type and press Enter key. </li> <li> Copy your downloaded fonts then Goto File System -> usr -> share -> fonts folder -> copy your downloaded fonts into this folder </li> <li> Once you done with this process, if you want to working on new installed fonts. Please restart your machine.</li> <ul>

<ul>  Steps to install Lohit Kannada or any other fonts on Windows: <li>To download the font, copy the the given link in your bowser--> thatskannada.oneindia.in/common/Lohit-Kannada.ttf</li> <li>Click Start, and then click Run.</li> <li>Type the following command, and then click OK: %windir%\fonts.</li> <li>On the File menu, click Install New Font.In the Drives box, click the drive that contains the font that you want to add. Note The floppy disk drive is typically drive A or drive B. The CD drive is typically drive D.</li> <li>In the Folders box, click the folder that contains the font that you want to add, and then click OK.</li> <li>In the List of Fonts box, click the font that you want to add. To select more than one font at a time, press and hold the CTRL key while you select each font.</li> <li>Click to select the Copy Fonts To Fonts Folder check box. The new font is saved in the Windows\Fonts folder.</li> <li>Click Ok</li></ul>

<ul> OR

<li>If finding difficulty in the above steps just follow the single steps for installing a specific fonts in both Ubuntu and Windows <li> Download the new fonts from the Internet -> double click on the downloaded font file -> Then click on the Install font -> restart your computer. </li> <ul>

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How do I setup Kannada language on OpenOffice.org, Ubuntu and Windows?
<li>Open OpenOffice.org Word processor by clicking on Application → Office → OpenOffice.org Word Processor. <li>Click on Tools → Options → Language Settings → Languages. <li>Check Enabled for Complex Text Layout(CTL) and Choose Kannada in Default languages for Documents (CTL). <li>Click on OK. Also, <li>Click on System → Administration → Language Support. <li>Choose scim-immodule in the input method box. <li>Log off and login again to see the effects.

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Can I convert word documents with nudi non-unicode fonts to a document with unicode fonts?
<ul><li>Download the 'converter' document (Nudi Conversions.dot) to your computer (This converter will run on a Microsoft Word document in Microsoft Windows. So users should do conversion on Windows platform using Microsoft Word since this is a Microsoft Word template document. After conversion the document can be edited/used in OpenOffice (Windows/Ubuntu)). </li> <li>Open this document</li> <li>Open your document which has non unicode font</li> <li>Select all text from your document, copy and paste to the converter document</li> <li>Click the button 'nudi converter' on the converter document</li> <li>Select the required option for UNICODE conversion and click on select button</li> <li>Save the file as the new file with UNICODE font and make changes for re-use</li> <li>Please read this new document carefully to ensure the changes are OK</li></ul> For NEW documents, please use UNICODE font only - Lohit Kannada, Gubbi, Navilu, Janakannada, Tunga or ArialMSUnicode. Government of Karnataka has also released UNICODE fonts for Kannada.

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How do I setup my printer on Ubuntu?
<ul> Before you begin the installation steps below, connect your printer/s. You need to do this prior to turning your system on. This helps to ensure Ubuntu recognizes how the printer is connected to the system, and it allows Ubuntu to identify the specific printer port. <li>Starting Ubuntu’s printer tool --- From your Ubuntu main menu, select System, then choose Administration. Under the Administration menu, you will find an icon labeled Printing. Select this tool and within several seconds the Printer Configuration Tool will open.</li> <li>Configuring a printer connection --- Now, double click on the New Printer icon. This will bring up the Add a Printer wizard.</li> <li>Choosing a printer driver --- Your printer has been detected. Select your 	printer from the list and click the Forward button to complete the process.</li> <li>Testing the printer --- Highlight your new printer icon and press the right mouse button. Now choose the Properties option. This takes you to your specific printer’s properties control. The properties control allows you to not only print a test page, but also to make changes to your printer paper, resolution, color options and ink usage. Your printer is now ready to use.</li> </ul> Back to Top

How to set up Hp printers through hplip?

 * 1) Download hplip from here
 * 2) Open a terminal(applications>> accessories>> terminal)
 * 3) Type sh hplip-3.14.6.run command/copy+paste in terminal press Enter
 * 4) If it asks for a password, please enter your Ubuntu login password
 * 5) then follow as it shows.
 * 6) Once it complete all the steps, follow the general printer setup steps.

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How do I connect to a wireless network on Ubuntu?
<ul> To connect to a wireless network: <li>Ensure that your wireless device is turned on.</li> <li>Click the Network Manager icon in the system notification area.</li> If you are connecting to a network for the first time, security details may be needed. If so, a dialog box will open. Enter your security details as follows: <li>In most cases the security type will be detected automatically. If not, select the security type from the Wireless Security drop-down box. This will depend on how the wireless network is set up. Examples of security types are WEP, WPA and LEAP.</li> <li>Enter the password, key or other authentication details as appropriate. These are usually case-sensitive. If you don't know your wireless key, it may be printed on the bottom of your wireless router.</li> <li>Click Connect. If you are prompted again for your security details, you may have entered them incorrectly, or there could be a problem with your wireless setup.</li> </ul> Back to Top

How do I connect to a wired (LAN) network on Ubuntu?
<ul> You will be connected to a wired network automatically when you plug in the network cable. Manually entering your network settings <li>Right click the Network Manager icon in the system notification area and click Edit Connections.</li> <li>Click the Wired tab, select the connection and click Edit.</li> <li>Click the IPv4 Settings tab and choose Manual from the Method drop down list.</li> <li>Click Add and enter your IP address and other details. Enter the address of your DNS server too.</li> <li>Click Apply. The network should now connect if you entered the settings correctly.</li> </ul> Back to Top

How to setup MTS Data card on UBUNTU 12.04
Follow the steps to configure the data card on UBUNTU 12.04

<li>1.Insert the MTS data card. Wait till the system detects the data card. <li>2. Once detects, right click on the Network Icon placed at the top panel on the right hand side of the screen. Select Edit connections. <li>3.It opens up the “NETWORK CONNECTIONS” window, click on “MOBILE BROADBAND” tab <li>4.click on “ADD” button. It opens up the “NEW MOBILE BROAD BAND CONNECTION” window click on “CONTINUE” button <li>5.Select INDIA from the country or region list and then click on “CONTINUE”. <li>6.Select on Service provider name as “MTS” and then click on “CONTINUE” <li>7.Here default plan is automatically selected, hence just click on “CONTINUE” button. <li>8.In this step, type the user name: internet@internet.mtsindia.in and password: MTS (caps on). On the screen, the password will appear as stars (***), then click on Apply

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Samsung/iPhone net connection
Note: We have required the following things to connect a Internet through Android/iPhones:

a. Activate GPRS in the connecting Phones.

b. Ubuntu installed Computer with wireless card.

In Mobile Phone 1. Go to Mobile settings > Wireless and Networks -> Tethering and portable hotspot -> Check the portable Wifi-hot spot ---> go to portable wi-fi hot spot settings > select Configure portable wifi hotspot> note down the password by checking show password below or you can change the default password also. In computer  2. In top pannel left click on Network icon(Rightside of the top pannel) Select the Network name starting with the Androd select it will ask you for the password, which you noted above noted password type and click on Connect. Now it will try to connect your mobile internet.

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How to make multiple Ubuntu copies Using K3B
Please follow the steps to make multiple Ubuntu dvd'S

<li>1. Insert the ubuntu DVD into the dvd drive(see to it dvd drive should work properly). <li>2. Go to applications->sound and videos-->K3B(close window did you know?)

<li>3. click on make copy medium.

<li>4. Mention the number of DVD's you want to prepare, In copy menu. Click on start.

<li>5.Once copy is done the inserted DVD comes out, Insert Empty dvd's into DVD drive, have mention in number of copies one by one.

How to make a pen drive bootable
<ul> Note: In order to make a pen drive bootable pen drive, one requires the following:

<li>a. Minimum pen drive capacity of 4 GB. <li>b. ISO image of UBUNTU. <li>c. Once booted, make sure that no new data is saved.

<li>1. Insert the pen drive into the USB port of your computer as shown below.



<li>2. Go to Applications>system tools>Administration>startup Disk creator,as shown

<li>3. Once system detects pen drive, click on other. Show the path where you stored the ISO UBUNTU image file.



<li>4. Click on Make Startup Disk, as shown in the image below. <li>5. After clicking, the 'installing' process would begin. Once the installation is complete with the figure showing 100%, click on the quit option.

Your pen drive is ready for installing UBUNTU on your computer.

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How do I connect to the Internet via a Wireless Data Card (Mobile Broadband)?
<ul> Mobile Broadband means any kind of high speed Internet connection which is provided by an external device such as a 3G USB stick or mobile phone with built-in HSPA/UMTS/GPRS data connection. Most mobile broadband devices should be recognized automatically when you connect them to your computer. Ubuntu will prompt you to configure the device: <li>The New Mobile Broadband Connection wizard will open automatically when you connect the device.</li> <li>Click Forward and insert your details, including the country where your Mobile Broadband device was issued, the network provider and type of connection.</li> <li>Give your connection a name (it is up to you what name you choose) and click Apply.</li> <li>Your connection is now ready to use. To connect, click the Network Manager icon in the top right of the panel and select your new connection.</li> <li>To disconnect, left click the Network Manager icon in the top right of the panel and click Disconnect.</li> </ul> <ul> If you are not prompted to configure the device when you connect it, it may still be recognized by Ubuntu. In such cases you can add the connection manually: <li>Right-click the Network Manager icon in the system notification area and click Edit Connections.</li> <li>Select the Mobile Broadband tab. </li> <li>Click Add. </li> <li>This should open the New Mobile Broadband Connection wizard. Enter your details as described above. </li> </ul>

OR

Most of the data cards available in the market are designed to work on windows and mac computers. Few have drivers (software) to work on GNU/Linux too! However for the data cards that do not have GNU/Linux drivers, here is the most generic and simple solution..

1. Connect the data card to the USB port.

2. Open the 'Terminal' (Application → Accessories → Terminal)

3. Two additional software are required for this activity. So use internet (may be wifi or cable) to download these software packages. In the terminal window, at the $ sign, type sudo apt-get install wvdial and when prompted for a password, type in your login password (you will not see a thing on the screen, don't worry just key in your password)

4. The next software package that we have to install is call usb-modeswitch. This package is very important because most of the datacards when plugged in acts like storage devices and not datacards and this package switches the devices' mode from storage device to a datacard. You can download this package from http://www.draisberghof.de/usb_modeswitch/usb-modeswitch-1.2.0.tar.bz2 and you'll need another file which can be downloaded from here http://www.draisberghof.de/usb_modeswitch/usb-modeswitch-data-20111023.tar.bz2. A supporting package called libusb is required too. This can be downloaded by typing sudo apt-get install libusb at the $ symbol in the terminal.

5. The two files downloaded needs to be unzipped (uncompressed). If you are not sure of where the files are, check your Downloads folder under the home folder. Right-click on the downloaded files and select extract here. Once this is done, go back to the terminal and type the following commands

cd ~/Downloads/usb-modeswitch-1.2.0

sudo make install (you'll have to enter your login password after this)

cd ~/Downloads/usb-modeswitch-data-20111023

sudo make install

sudo apt-get install libusb-dev

6. Now we need to configure wvdial. In the terminal at the $ symbol type sudo gedit /etc/wvdial.conf. This will open a text editor which might have some text in it. Replace the text with the following

[Dialer Defaults]

Init1 = ATZ

Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0

Modem Type = Analog Modem

Baud = 9600

New PPPD = yes

Modem = /dev/ttyUSB0

ISDN = 0

Username = <type your reliance number here> or internet (if it is a tata photon datacard)

Password = <type your reliance number here> or internet (if it is a tata photon datacard)

Phone = #777

Stupid Mode = 1

7. Once this is done, at the $ type sudo wvdial to connect to the internet

–> WvDial: Internet dialer version 1.60

–> Cannot get information for serial port.

–> Initializing modem.

–> Sending: ATZ

ATZ

OK

–> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0

ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0

OK

–> Modem initialized.

–> Sending: ATDT#777

–> Waiting for carrier.

ATDT#777

CONNECT

–> Carrier detected. Starting PPP immediately.

–> Starting pppd at Thu Nov 5 15:45:26 2009

–> Pid of pppd: 3205

–> Using interface ppp0

–> pppd: 0$P

–> pppd: 0$P

–> pppd: 0$P

–> pppd: 0$P

–> pppd: 0$P

–> local IP address 115.184.194.33

–> pppd: 0$P

–> remote IP address 220.224.141.145

–> pppd: 0$P

–> primary  DNS address 202.138.103.100

–> pppd: 0$P

–> secondary DNS address 202.138.96.2

–> pppd: 0$P

You are now connected to the internet

8. You can start browsing now and remember not to close the terminal window. To disconnect you'll have to press Ctrl C. Back to Top

What is FOSS?
Free and open-source software (FOSS) or free/libre/open-source software (FLOSS) is software that is liberally licensed to grant the right of users to use, study, change, and improve its design through the availability of its source code.

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Can FOSS be downloaded and installed on Windows?
Yes. There are public software alternatives to proprietary softwares. These softwares can be downloaded and installed on Ubuntu (Linux) as well as Windows. To see a list of these public software alternatives, click here.

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How can I download FOSS for Windows?
To download FOSS for your Microsoft Windows Operating System, the links are as follows:

Ubuntu GNU- Linux (Operating System)

To download: http://www.ubuntu.com/getubuntu/download

LibreOffice.org 

To download: https://www.libreoffice.org/download

Mozilla Thunderbird (E- Mail Client)

To download: http://www.mozillamessaging.com/en-US/thunderbird/

Mozilla Firefox (Web Browser)

To download: http://www.mozilla.com/en-US/

7-zip, Peapod (Archiving)

To download: http://www.7-zip.org/download.html

VLC Player, MPlayer (Media)

To download: http://www.videolan.org/

GIMP (Graphics)

To download: http://www.gimp.org/downloads/

PDF-edit (PDF Editor)

To download: http://pdfedit.petricek.net/en/download.html

Inkscape (Vector Graphics Editor)

To download: http://inkscape.org/download/?lang=en

Audacity (Digital Audio Editor)

To download: http://audacity.sourceforge.net/download/linux

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How do I install OpenOffice on Windows?
To install LibreOffice on Windows, click here, and follow the steps.

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How to make OpenOffice as the default program to open Microsoft Office files on Windows?
To know how to set LibreOffice as the default program for MS Office files on Windows, click here.

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How do I install Lightning extension for Thunderbird?
Lightening extension allows quick display of current tasks. Task preview pane displaying task parameters like the description, from date, due date, category, etc and calender showing events.<ul><li>Download extension for lightening from this link: https://addons.mozilla.org/en-US/thunderbird/addon/2313 </li><li>Open Mozilla Thunderbird, from Tools menu select Add-ons.</li><li>Click the Install button, and locate/select the file you saved on desktop (lightning-0.9-tb-win.xpi) and click OK.</li></ul>

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How do I use Nudi and Baraha on LibreOffice for Windows?
Nudi: <li>Start Nudi direct (Assuming Nudi is installed, if not, please download from the website www.kagapa.org) <li>Right click on the icon on the system tray and choose Nudi Unicode. <li>Choose Unicode fonts like Kedage, Mallige, Tunga in the OpenOffice.org writer fonts.

Baraha <li>Start Baraha direct. (If you do not have Baraha, please download from the website [www.Baraha.com]) <li>Right click on the Baraha icon on the system tray and choose Languages -> Kannada -> Unicode or Languages -> KGP Keyboard Layout -> Unicode. <li>Choose Unicode fonts like Kedage, Mallige, Tunga in the OpenOffice.org writer fonts.

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How do I change the page setup in LibreOffice?
<li>To change your page settings in LibreOffice, select Format >> Page from the menu bar. <li>The dialogue box opens which allows you to change the various parameters of the page. <li>Click here to view the screenshot of the Format Page option.

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How do I change the page orientation in LibreOffice (to Potrait, Landscape etc.)?
<li>To change your page orientation, right click on the Default option at the bottom the page and select the appropriate option. <li>Click here to view the screenshot of the Page Orientation option.

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How can I create a blog account and write blogs in karnatakaeducation.org.in?
<ul> <li>In the address bar of a web browser, please type http://karnatakaeducation.org.in and enter the site.</li> <li>In the home page, at the bottom left corner, you'll see a user login block. </li> <li>In this block, click on the create new account link.</li> <li>Fill up the form</li> <li>You'll see a message like this “'Thank you for applying for an account. Your account is currently pending approval by the site administrator.In the meantime, a welcome message with further instructions has been sent to your e-mail address.'”.</li> <li>Please check your email and you'll have a mail with the subject line “Account details for at Karnataka education (pending admin approval)”.</li> <li>You'll receive another mail after the approval with a subject line “Account details for at Karnataka Education (approved)”. Please click on the link in the mail or copying and pasting it in your browser. You can use this link to login in only once. After you login you'll go to a page where you can change your password. Once you have set your own password, you will be able to log in to http://karnatakaeducation.org.in/?q=user in the future using:  .</li> <li>In the Main Menu, click on create content → blog and you can write your own blog.</li> </ul> Back to Top
 * 1) Choose a user name for your self. Spaces are allowed; punctuation is not allowed except for periods, hyphens, and underscores.
 * 2) Enter a valid email ID
 * 3) Click on the Create new account button

What is Way2SMS? Can I send SMS and E-Mails via Way2SMS?
Way2SMS is a service that offers SMS communication totally cost free to mobile users. Mobile users can register at absolutely no cost with Way2SMS.com, and receivers of the messages need not be registered Way2SMS users. To create an account at Way2SMS.com, click here.

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How do I increase the screen brightness on my Samsung N148 Plus Netbook?
<ul> To increase the screen brightness on your Samsung N148 Plus Netbook, do the following: <li>Go to Applications --> Accessories --> Terminal. <li>After the $ prompt, copy and paste the following command: sudo setpci -s 00:02.0 f4.b=ff <li>Press Enter. It may prompt you for the password. Type your password and press Enter. <li>The value ff increases your screen brightness to the maximum. </ul> <ul> Note:One of the following possible values can be entered instead of ff to adjust your screen to a medium brightness to save battery. <li>42, 56, 70, 92, AF, CC, E5, FF <li>30, 40, 50, 60, 70, 80, 90, 100 </ul>

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How can I download and save any Youtube video on my computer?
<ul> To download and save any YouTube video on your hard disk, yo can do the following -- <li>First copy the youtube video link (while it is open) from the address bar of your internet browser. <li>In a new tab or a window, go to www.keepvid.com <li>In the URL box, paste the video link (which you copied) and click Download <li>This will show the various video formats that you can download for that video. <li>You can click on any format and download/save the video on your hard disk. </ul>

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How to install, setup and start using Skype on Ubuntu 10.04?
This page has the required information to install, setup and use skype on Ubuntu 10.04

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How to use MS Publisher (.pub) files on GNU/Linux?
Microsoft Publisher (.pub) files do not work on GNU/Linux systems. Zamzar is a free online conversion service, which lets you convert your files online to any desired format (images, documents, audio, video, e-books, compression too). You can select files (upto 100mb in size) at a time for conversion. Once you select the file to be converted and the output format, you will be sent a link to your e-mail(which you provide during the conversion process), to download the converted file. One can upload the .pub files and it will convert the .pub file into OpenOffice.org's (or any other) format so that it can be used on GNU/Linux.

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GIMP and INKSCAPE Manual
Download the manual here

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view .ggb Geogebra files on latest android tablets/smartphones and phablets
Visit Play store application: https://play.google.com/store/apps/details?id=org.geogebra OR (If 'play store' app does not allow you to do it,)

Download from Google Drive: https://drive.google.com/file/d/0B5VjEPbF04AVckVobVE5RFMtRWM/edit?usp=sharing

Then install the file. You need to allow external sources to install apk files in android. It is mostly known feature.[Go to Settings, Security ->, External Sources. Tick the option and open the file again to install. After installing, disable 'external sources' again if you like to.]

After installing, you will be able to open Geogebra files on your tablet. It will work on latest android tablets with enough RAM and processor power. If it does not work for you, then your phone may be incapable of handling it. - Johnson Dcunha, Naravi High School. http://johnson.net.in/

On Tuesday, 18 March 2014 20:21:02 UTC+5:30, Radha Narve,GHS Begur wrote: I have downloaded Geogebra Beta 5 on my laptop which is very good to show 3d objects.I am sending a video in which i have demonstrated a moving cylinder.Because you can not view this in your geogebra application which you are using now.In this video I have not used the voice because of problem in my head phone.For downloading Geogebra Beta 5 use this link http://download.geogebra.org/installers/5.0/?C=M;O=D

How can I install KTechLab?
The customised DVD that you receive during your training sessions has KTechLab pre-installed. A shortcut to KTechLab can be created as follows <li>On the desktop right-click and select create launcher. <li>In the box that pops up, please enter the name as KTechlab and command as 'ktechlab' (command is case sensitive) and click on OK. <li>The Ktechlab icon will appear on desktop. Double click on the icon to start KTechlab.

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How to install Openshot video editor in Ubuntu
(Note:-To install openshot video editor It required Internet)

Openshot video editor can be installed in two types

Type1: You can install Openshot video editor by Ubuntu software centre by following the below mentioned steps

Step1:-Go to Applications--->Ubuntu software centre>In search box type Openshot video editor click on install and provide the password after complete installation you can use the Openshot video editor.

Type2:

You can install Openshot video editor by command mode. by following the below mentioned steps.

Step1:Go to Applications--->Accessories>Terminal->Type the following commands one by one without mistake

sudo add-apt-repository ppa:openshot.developers/ppa  Press Enter and provide the passworrd Press Enter sudo apt-get update Press Enter sudo apt-get install openshot Press Enter

After executing the above mentioned command Openshot videos editor will be available to use Openshot video editor. to Use Openshot video editor Goto Applications>Sound & video>Openshot video editor.

How to install PhET in Ubuntu?
The customised DVD that you receive during your training sessions has PhET pre-installed on it. A shortcut or a launcher to PhET can be created as follows:

<li>1.Right click on Desktop select Creat launcer

<li>2.Type as mentioned below without any mistake.
 * 1) '''Name:PhET
 * 2) '''Command:firefox /opt/PhET/index.html



<li>3.Click on OK and close all tabs

<li>4.PhET will appears on Desktop,Just double click on PhET Icon it opens up.

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More about Ubuntu
click here

Basic troubleshooting In school computer LAB
* The Computer Won’t Start A computer that suddenly shuts off or has difficulty starting up could have a failing power supply. Check that the computer is plugged into the power point properly and, if that doesn’t work, test the power point with another working device to confirm whether or not there is adequate power.

* The Screen is Blank If the computer is on but the screen is blank, there may be an issue with the connection between the computer and the screen. First, check to see if the monitor is plugged into a power point and that the connection between the monitor and computer hard drive is secure. If the problem is on a laptop, then you may need to get a professional to fix it as some of the internal wires may be worn.

* Abnormally Functioning Operating System or Software If the operating system or other software is either unresponsive or is acting up, then try restarting your computer.

* Ubuntu Won’t Boot If you are having troubles booting Ubuntu, then you may have to reinstall it with the Ubuntu DVD.

* The Screen is Frozen When you computer freezes, you may have no other option than to reboot and risk losing any unsaved work. Freezes can be a sign of insufficient ram, registry conflicts, corrupt or missing files, or spyware. Press and hold the power button until the computer turns off, then restart it and get to work cleaning up the system so that it doesn’t freeze again.

* Computer is Slow If your computer is slower than normal, you can often fix the problem simply by cleaning the hard disk of unwanted files.

* Strange Noises A lot of noise coming from your computer is generally a sign of either hardware malfunction or a noisy fan. Hard drives often make noise just before they fail, so you may want to back up information just in case, and fans are very easy to replace.

* Overheating If a computer case lacks a sufficient cooling system, then the computer’s components may start to generate excess heat during operation. To avoid your computer burning itself out, turn it off and let it rest if it’s getting hot. Additionally, you can check the fan to make sure it’s working properly.

* Dropped Internet Connections Dropped Internet connections can be very frustrating. Often the problem is simple and may be caused by a bad cable or phone line, which is easy to fix.

* Reboot your computer. Turn your computer off, let it sit for two minutes, and reboot it. Sometimes one command of the hundreds a computer executes every second can cause corrupted memory or other temporary unexplainable problems. Rebooting will clear out all the gremlins and gives everything a fresh-start.