Solving resolution problem in remastered Ubuntu

Before playing with some bloody configuration edits, lets try something simple.

Try pressing CTRL ALT + or CTRL ALT – from your desktop (+ will increase resolution, while – decreases the resolution). It will help you to switch between the available screen resolutions for your display..

If this teknik dont worked, try some simple configuration file editing…

Inorder to reconfigure your X server-the graphical system of Ubuntu it is safe to play from standing outside of X server. Try the following steps in order

1. logout

2. press ctrl+alt+F1 (starts a virtual terminal instead of the graphical system, here you will get a screen having a look of terminal. It will prompt for your user name and password)

3. As you know, we are going to change the settings of display. So it is better to backup your current display settings which is stored in xorg.conf type in as follows 

sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.bak 

 4. We are going to edit the xorg.conf file now by opening it in vi editor. Type i

 sudo vi /etc/X11/xorg.conf (to edit the file)

5. go down to the Section “Monitor” hit i to insert text and write in (i key press will allow you to enter text): 

HorizSync 30-110 

VertRefresh 50-185 

look out the picture…

 

     6. Hit Esc and type wq (wq means read and quit)

7. press ctrl+alt+F7 (It will send you back to normal graphical system)

8. press ctrl+alt+backspace (to restart the X server, just to make sure)

Possibly your resolution problem may be solved by those configuration editing…
It works, since my friend tried it out and corrected his resolution problem…

 

 

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Something about Domain Name Servers

Domain Name servers are responsible for resolving the web address that you type in on the address bar of your web browser into  machine understandable IP addresses to locate the servers…

Almost all the internet service providers have their own dns servers for  this purpose… It is not strict rule that you have to use this dns servers for address resolution always.. some other public and free dns servers are available today.
Some of these kind of dns servers provides security against vulnerabiliteis in the internet, some are very much faster than the dns servers of your ISP..
The ip of  best public dns servers available are

google public dns
8.8.8.8
8.8.4.4

opendns
208.67.220.220
208.67.222.222

dns advantage
156.154.70.1
156.154.71.1

others
209.244.0.3
209.244.0.4

How to find out the best dns server for your system?

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This cheking simply consists of pinging from your system to all the nameservers one after another and to see the one that is having minimum average time
to do this, take your terminal and type in as follows

1: $ ping -c 5 8.8.8.8

2: Checkout the average time needed for the process.
Its shown in    the terminal. Replace the address
8.8.8.8 with all other  dns addresses

How to change the dns server…
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1. take terminal from Applications -> accessories -> terminal

2. Backup the resolv.conf file in the etc folder of the filesystem

                $ sudo cp /etc/reasolv.conf   /etc/resolv.conf.bak

3. Edit the back up file to change the dns address

                $ sudo gedit /etc/resolv.conf.bak

4. replace the current domain address specified there with the

dns  server address that gave you the minimum average time.

Enter the other address below that in the same format if you

wish..(Network manager opt for secondary address if the

connexion fails)

5. That’s all about making the changes… The data that u

have written in the back up file will long till u delete that file

manually.

6. Copy back the content of the backup file (resol.conf.bak) to the original 

resolv.conf after you connected to the internet whenever you want to change 

the address (before

starting  browsing)


update

You can use the network manager to automatically change the dns address. Assign the dns server address in the IPv4 settings tab as shown in the figure.

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How to find the MAC ID of Nokia phones

 No need to look out over  the menus and settings there and where to find the mac id of wifi of  your Nokia… Its simple to the extent that you cant even think before… You may need to know your wifi’s mac id to pair your phone in your college’s wifi network.

Let me share my experience, how I discovered the mac id of a Nokia E52 last day. Just take your phone and type in the following as if you are dialing a number.

Type  *#62209526# ,  if its correct then the phone will display the mac id soon after you types the last character #.

What this number means? Simply it means the digits that corresponds to
the word mac<space>wlan. That is  *#MAC<space>WLAN#.
MAC id is a specific and unique address assigned to each and every device…

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Minifring: Chat client for mobile phones

Mini fring is one of the coolest application that you will get in your mobile phone to chat online through gprs connection. It enables chatting via gtalk, yahoo, msn… and so man other social networks with an awesome speed. You can chat without hazzles of the slow gprs connection such as slow network, frequently losing range…

just go to the fring website and download the application from their via wap or PC download.

While you first log on to the website, you have to complete gprs configuration… dont worry… you have to do nothing.. It will do everything..

After the first login fring will ask you to select the online account (gtalk,yahoo…). You have to provide your username and password there. Then you will be logged in to the specified account.

I worked out with this application with my Nokia 5200 and gprs connection of Aircel.

I selected my google account during my first login… it was amazing to see that fring dowloaded the contacts from the google in an awesome speed.. Those friends who are online are shown on the top of the list as if in gtalk. U can identify your online and offline friends esily since they use a different symbols. If you click on any off your friends, mini fring opens up a new tab like window for that buddy separately.

The navigation in between friends to whom you are chatting is easy and simple…

Lets try it today itself, goto fring by clicking on this link

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wget : ligthweight text based downloader

Wget is good option when you have to download smaller files in a faster rate especially when you are hunged up with a slow connection. You feel it awesome if you are using some means of mobile internet or dial up connection.

                  Wget is an application for retrieving files using HTTP, HTTPS and FTP, the most widely-used Internet protocols. It is a non-interactive commandline tool, so it may easily be called from scripts, terminals without X-Windows support, etc.

GNU Wget has many features to make retrieving large files or mirroring entire web or FTP sites easy, including:

• Can resume aborted downloads, using REST and RANGE
• Can use filename wild cards and recursively mirror directories
• NLS-based message files for many different languages
• Optionally converts absolute links in downloaded documents to relative, so that downloaded documents may link to each other locally
• Runs on most UNIX-like operating systems as well as Microsoft Windows
• Supports HTTP proxies
• Supports HTTP cookies
• Supports persistent HTTP connections
• Unattended / background operation
• Uses local file timestamps to determine whether documents need to be re-downloaded when mirroring

The pleasure will be more if you download a picture or video using wget instead of your web browser...Its pretty fast.. 

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Essential commandline for driving your system

Turn off

sudo shutdown

 

Reboot

sudo reboot

List mounted devices and disks and other info

 

sudo fdisk -l

 

Static file system information

 

/etc/fstab

 

Fcsk – boot from live CD (for booting from a mounted drive)

open a console with ctrl+alt+f1

then sudo fsck /dev/sdb, etc

Another option: sudo e2fsck -p -f -v /dev/sda

 

Force fsck on boot

sudo touch /forcefsck and reboot!

Change screen resolution using command line

xrandr -s new_widthxnew_height

example: xrandr -s 1920×1200

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Installing Blueman on Ubuntu

                    Blueman is a nice and  cool apllication software running on gtk engine which gives a good interface to connect your mobile or bluetooth device to the system. It's  advantege is that it easily  handles the gprs connection so that you can use mobile web easily on your computer without creating some dialler etc... manually. Try it, you will be adicted...
       

Go to System--->Administration--->Software--->Sources.Now click on Third-Party Software tab, Click on add one of the following sourcelist which is suitable for you on the basis of your operating system.

For Ubuntu Jaunty (9.04) Users

    deb http://ppa.launchpad.net/blueman/ppa/ubuntu jaunty main

For Ubuntu Intrepid (8.10) Users

    deb http://ppa.launchpad.net/blueman/ppa/ubuntu intrepid main

For Ubuntu hardy (8.04) Users

    deb http://ppa.launchpad.net/blueman/ppa/ubuntu hardy main

Ubuntu Gutsy (7.10) Users

    deb http://ppa.launchpad.net/blueman/ppa/ubuntu gutsy main

Once this is done follow the steps

Installing from Synaptic Package Manager

Synaptic Package Manager from System--->Administration--->Synaptic and and click reload.
Then search for package named blueman in the list and mark it for installation. After marking then click on the apply button on the top to
complete the installation.

Installing from the Terminal 

From the terminal run the following command

    sudo apt-get update               

                             .....for updating the package list, not for updating the packages

Install blueman using the following command

    sudo apt-get install blueman
Blueman will remove and replace the default bluetooth manager that came preinstalled with ubuntu.

Later it can be accessed by going to system--->preference--->bluetooth manager

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