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Ubuntu FAQ (view source)

Revision as of 06:44, 30 June 2015

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=Add World Clocks to Ubuntu Date/Time Applet=
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*Click on the clock applet and select the ‘Time & Date Settings’  entry
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*In the ‘Clock’ tab, check the box next to ‘Time in Other Locations’
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*Click the ‘Choose Locations‘ button
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*Tap ‘+’  and enter the name of the location
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=How to Enable Hibernation in Ubuntu 14.04=
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Hibernate is disabled by default in Ubuntu, when the computer hibernates, all of your applications and documents are stored and the computer completely switches off so it does not use any power, but the applications and documents will still be open when you switch on the computer again. <br>
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The indicator-session was updated to use logind instead of upower. Hibernate is disabled by default in both upower and logind. <br>
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* To re-enable hibernate, run the commands below one by one to edit the config file:<br>
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Open terminal (Ctrl+Alt+T) and run the following commands one by one <br>
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    sudo -i
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    cd /var/lib/polkit-1/localauthority/50-local.d/
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    gedit com.ubuntu.enable-hibernate.pkla
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'''Tip:''' if the config file does not work for you, try another one by changing '''/var/lib''' to '''/etc''' in the code.
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* Copy and paste below lines into the file and save it. <br>
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    [Re-enable hibernate by default in upower]
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    Identity=unix-user:*
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    Action=org.freedesktop.upower.hibernate
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    ResultActive=yes
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    [Re-enable hibernate by default in logind]
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    Identity=unix-user:*
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    Action=org.freedesktop.login1.hibernate
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    ResultActive=yes
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    Identity=unix-user:*
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    Action=org.freedesktop.login1.hibernate-multiple-sessions
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    ResultActive=yes
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[[File:Enable-hibernate-ubuntu1310.jpg | 500px]]
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* Restart your computer and done. <br>
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<br/>
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=== If network manager fails ===
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Sometimes the network manager becomes disabled after resuming from hibernation. If this happens, please create the executable script /etc/pm/sleep.d/55_local_networkmanager to solve this. Follow below steps to do that -
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* Open the terminal and execute below command:
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sudo gedit /etc/pm/sleep.d/55_local_networkmanager
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Enter password and press Enter.
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* Add the following lines of code to the new file and save it:
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    #!/bin/sh
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    # This script gets NetworkManager out of suspend.
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    case $1 in
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    suspend|suspend_hybrid|hibernate)
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        # No need to do anything here.
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        ;;
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    resume|thaw)
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        #nmcli nm sleep false
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        if [ "`nmcli -f state -t nm`" = "asleep" ]; then
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          service network-manager restart
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        fi
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        ;;
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    esac
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* Now restart to see the working network manager.
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=How to download youtube videos in mozilla firefox ?=
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Please follow the below mentioned steps
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<li>1.Open firefox, Applications==>Internet==>Firefox Web Browser
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<li>2.Once it's open click on '''tools'''------>'''add-ons'''<br>
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[[Image:ut2.png |500px]]
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<li>3.In top right side of the screen have search option in that type as '''you tube video downloader''' press '''Enter'''.
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<li>Now you will get list of  all the downloader plugins, in the list select best addon(example : 1-Click youtube video downloader) click on '''install''' button.<br>
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[[Image:ut3.png |500px]]
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<li>After the installation, just open any youtube videos you will see the '''download''' and click download button and save the video.
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=How to correct, The Ubuntu login split screen or Lower graphics mode=
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'''Note:Before following the below mentioned steps please connect the internet(internet should connected)'''
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1: Whenever you get the split ed screen press the keys Ctrl+Alt+(F2 or F3 or F4 or F5 or F6) press any one
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of the function key f2 to f6 along with the ctrl and alt button till you get terminal (blank screen
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ended with $ sign).<br> 
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2:In front of $ sign type the following command without mistake '''sudo apt-get install gdm''' press '''Enter'''
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3: provide the system password (password will not appear)
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4:Once the process is complete, type the command '''sudo reboot'''
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5:Your machine will restarts automatically with good screen display.
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'''Note''':-If you Don't have internet follow the below mentioned steps.
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1: Whenever you get Lower graphics mode press the keys Ctrl+Alt+(F2 or F3 or F4 or F5 or F6) press any one
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of the function key f2 to f6 along with the Ctrl and Alt button till you get terminal (blank screen
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ended with $ sign).<br> 
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2:In front of $ sign type the following command without mistake '''sudo rm /etc/X11/xorg.conf''' press '''Enter'''
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3: provide the system password (password will not appear)
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4:Once the process is complete, type the command '''sudo service lightdm restart'''
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5:Restart Your machine you will get correct screen display.
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=How to use Record my desktop=
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<p>RecordMyDesktop is one of the few video capture programs available in Ubuntu. Keeping with Linux’s free philosophy, RecordMyDesktop produces Ogg Theora video files out of your entire desktop, or just a selected section. If you haven’t heard of Ogg Theora, don’t worry – any modern video player will play these files, and you can even upload them to YouTube without having to convert them to another format.</p>
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*To begin recording video, click on Applications > Sound & Video > recordMyDesktop.
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*The main screen has a few common options, and a thumbnail of your desktop.<br/>[[file:racord my desktop1.png|400px]]<p>If you want to record sound, ensure that the checkbox beside Sound Quality is checked.</p><p>There are some more options that you may want to play with; to access them click the Advanced button.</p><p>Most options are specific to your needs, but one common thing that you may want to alter is the frame rate – a higher frame rate will look much smoother, at the cost of additional processing power. Frame rate can be changed in the Performance tab.</p>[[file:record my desktop 2.png|400px]]
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'''Record Your Entire Desktop'''
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<ol>
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<li>To start recording your desktop, either click the Record button in the main window, or click on the red circle in your system tray (which is in the top-right of the screen by default).<br/>[[file:record my desktop 3.png|300px]]</li>
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<li>Once you start recording, the red circle will change to a grey rectangle, the standard symbol for a stop button.<br/>When you are finished recording your video, click on the stop button in the system tray.<br/>[[file:record my desktop 4.png|300px]]</li>
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<li>By default, videos will be stored in your home directory, under the name “out.ogv”. If the file already exists, RecordMyDesktop will not overwrite it, but instead create a new file with a number at the end to differentiate it.[[file:record my desktop 6.png|400px]]</li>
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</ol>
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=How do I setup my printer on Ubuntu?=
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<ul>
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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.
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<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>
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<li>'''Configuring  a printer connection''' --- Now, double click on the ''New Printer'' icon. This will bring up the ''Add a Printer wizard''.</li>
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<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>
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<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>
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</ul>
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=How to increase battery life in your computer?=
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# Turn off Wi-Fi and BlueTooth - Most laptops have shortcut keys to instantly disable wireless networking.
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# Don't play computer games, music or DVD movies - Multimedia activities drain laptop batteries.
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# Adjust your screen brightness - Dimming your display saves battery power. 
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# Decrease or mute the Laptop Speaker Volume.
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# Turn off Auto-save features in  Office and other applications.
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# If your PC has a built-in wireless card, turn it off or disable it when not in use.
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# Programs that are run from a CD or DVD can be copied to and run from the hard drive, which typically consumes less power than an optical drive.
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# If you do not use your laptop for extended periods of time (a week or more), remove the battery pack from the laptop.
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# Do not expose the battery to high heat or freezing temperatures. Do not leave your battery in your car in the summer. Hot batteries discharge very quickly, and cold ones can't create as much power.
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# Make sure to plug your laptop charger adapter into a UPS and not directly into a power outlet or surge protector.
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# If you have a nickel-metal hydride battery, completely drain and recharge the battery once a month to maximize its capacity to hold a charge.
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# Fully charge new battery packs before use. New pack needs to be fully charged and discharged (cycled) a few times before it can condition to full capacity.Leaving a battery in a laptop while using an electrical outlet for long periods of time will keep the battery in a constant state of charging up and that will reduce the life cycle of the battery.
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=How to open .jar files in Ubuntu =
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#Right click on .jar file and goto '''properties'''
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#Then goto permissions tab right check on '''Execute: Allow executing file as program''' then click on close.
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#Again click on .jar files open with '''open with open JDK java 7'''.
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=How do I increase the screen brightness on my Samsung N148 Plus Netbook?=
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<ul><p>To increase the screen brightness in your Netbook follow the below steps:
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<li>Go to '''Applications --> Accessories --> Terminal'''.
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<li>In the terminal window after the '''$''' sign, copy and paste the following command: <br>
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<li>'''sudo setpci -s 00:02.0 f4.b=ff'''<br>
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<li>Then press '''Enter''' key. It will ask you for your computer password, Type your password and press '''Enter''' key(Note:Password will not.<br>
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'''NOTE:'''The value '''''ff''''' increases your screen brightness to the maximum.
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'''''One of the following possible values can be entered instead of '''ff''' to adjust your screen to a medium brightness to save battery.
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'''''30, 40, 50, 60, 70, 80, 90, 100'''''</p></ul>
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=How to reset the Ubuntu Username password =
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#Boot in a '''recover mode'''.<br>
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[[file:Grub.png | 400px]]
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#Now select "'''root - Drop to root shell prompt'''" and press "'''Ok'''"
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[[file:Recovery_mode.png | 400px]]
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#Now in front of # symbol type '''ls /home'''
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#Type following command :'''mount -rw -o remount /'''
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#Then, enter the following command to reset your password:'''passwd <username>'''
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#It will ask for new password (2 times) type and press Enter key.
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#reboot the machine using below command : '''sudo reboot'''
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#Now try to login with using a new password.<br/>
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=Ubuntu 14.04 LTS: File Sharing With Samba=
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<li>This tutorial will show you how to install and configure Samba, a free software that allows you to share files, printers and other common resources across a network, in Ubuntu 14.04 Trusty Tahr.
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<li>Install Samba and the graphical configuration tool:
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<li>Press Ctrl+Alt+T on keyboard to open the terminal. When it opens, paste the command below and hit run:<br>
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'''sudo apt-get install samba samba-common system-config-samba python-glade2 gksu'''
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<li>Open samba tool(Applications=>System tools=>Administration :<br>
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[[File:start samba.png|400px]]
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<li>When the tool opens, go to Preferences -> Server Settings.
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<li>Under Basic tab:
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<li>Workgroup. Same to your Windows Workgroup name (case-sensitive). In Windows 7, right-click Computer icon and go to Properties, there you’ll see Windows Workgroup name.
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<li>Description.This is the name of your computer as seen by Windows Users.
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<li>As it is not advisable to allow ‘Guests’ there should be no reason to change the ‘security’ settings tab unless you wish to do so.<br>
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[[File:Samba-server-settings.png|400px]]
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<li>Finally click the OK button to save it.
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<li>restart Samba service and done!<br>
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'''sudo restart smbd && sudo restart nmbd'''
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<li>To share a folder, click the green + (plus) button in Samba Server Configuration tool and you can then easily set the directory, name, read/write permissions and access users.
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<li> If you want to access shared folder from other ubuntu 14.04 computer, Please follow below :
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<li> goto Places=> COnnect to Server. <br>
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[[File:connect to server.png|400px]]
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<LI>type your samba configured computer adress Ex:'''smb://192.168.1.44''' click '''OK'''<br/>
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