As I discussed in last post KWallet have offered a great way for Ubuntu users to remember all passwords of their applications which require the authorization. You can retrieve your passwords from the encrypted file via KWallet Manager application normally launched when KDE starts. You can manage that unless you forget your master password. But what should you do if you have forgotten the master password? That is also the topic I want to share today.

You will see an error dialog in the case you send a wrong master password to KWallet Manager.

It's impossible to view your passwords of other applications if you don't know what is your master password. Other words you can't login into the KWallet Manager to manage your wallets. To solve this problem you have to remove the configuration file stored in the application folder. But normally I prefer renaming the file name. For example, the following commands are done with vntutor user.

cd /home/vntutor/.kde/share/apps/kwallet/
mv kdewallet.kwl kdewallet.kwl.bk

A new configuration file named kdewallet.kwl will be created at the next time when you restart KDE. Please share with everybody here if you know a better way.

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Today, I want to share a quick trick to anybody who have a problem with brightness buttons in Kubuntu Gutsy. The problem is known when you press Fn + Home (End) to adjust screen brightness in a Lenovo Thinkpad computer using Ubuntu Linux. You think that your screen will be darker or brighter but it doesn't work. There are a lot of questions about this bug on Ubuntu forum. So, if you have not yet found a proper answer may be this is a solution for you.

Open file:

vim /etc/acpi/thinkpad-brightness-up.sh

Add this line before "exit"

echo 4 > /proc/acpi/ibm/cmos

Open another file:

vim /etc/acpi/thinkpad-brightness-down.sh

Also insert this line before "exit"

echo 5 > /proc/acpi/ibm/cmos

Hopefully the problem will be fixed in your case.

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As other versions of Ubuntu Linux, Gutsy Gibbon doesn't provide Flash Plug-in for Firefox. You can check this problem easily by opening any Web pages consisting a Flash. You don't surprise because that is a non-free plug-in. That is the reason why I want to tell you how to install this plug-in from a non-free resource.

• Step 1: Add this line to your source.list

deb http://packages.medibuntu.org/ gutsy free non-free

• Step 2: Update your package database

sudo apt-get update

• Step 3: Search Adobe Flash Player plugin installer

apt-cache search flashplugin-nonfree

If it is found in the result, you move to next step to install it.

• Step 4: Install flashplugin-nonfree package

sudo apt-get install flashplugin-nonfree

Some new related packages are also installed to your Ubuntu system. But now you can play Flash in your Firefox.

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As you know, OpenOffice.org is a multiplatform and multilingual office suite. It is a free office suite in Ubuntu 7.10 with several improved features. Last month, I had to show you more than 80 free tutorials for creating and using documents, databases, spreadsheets, and presentations in OpenOffice.org. Today, I would like to tell with you what I have done to fix a bug in this office suite. Now let's go!

Applications > Office > OpenOffice.org Word Processor > Insert > Special Character

My God! What happen? Look at this screenshot

My OpenOffice.org 2.3 is crashing in Gutsy Gibbon. Look around and discover that this problem is somehow related to two packages (openoffice.org-gnome and openoffice.org-gtk)

The problem have been solved after I removed these packages.

sudo aptitude remove openoffice.org-gnome openoffice.org-gtk

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Have you already installed Ubuntu 7.10 (Gutsy Gibbon) ? If not, you should read this post to know how to install a new Ubuntu Gutsy.
Okey! If Ubuntu Gutsy is available, you can follow the following steps to setup extra packages to play DVD and listen to MP3 music.

What packages you have to install are non-free multimedia codecs known as w32codecs and libdvdcss2

1. Open your sources.list file in any text editors (in this case, I use gedit editor)
   

   sudo gedit /etc/apt/sources.list
   

2. Add this line to the end of file, then save it and close the text editor
   

   deb http://packages.medibuntu.org/ gutsy free non-free

   You can use the following command to do both step 1 and 2:


   echo "deb http://packages.medibuntu.org/ gutsy free non-free" | sudo tee -a /etc/apt/sources.list


3. Add GPG key to your keyring with the following command
   

   wget -q http://packages.medibuntu.org/medibuntu-key.gpg -O- | sudo apt-key add -


4. Update your sources
   

   sudo apt-get update


5. Install libdvdcss2 package to play encrypted DVDs
   

   sudo apt-get install libdvdcss2


6. Install w32codecs used by MPlayer and xine
   

   sudo apt-get install w32codecs

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There is no monitor signal while booting Ubuntu Gutsy. Just only a bank screen during booting the system. This problem is also seen again after you shutdown the Ubuntu Gutsy. How can you fix this problem? Don't worry! Hopefully, this post can help you to solve the problem.

First, you should install a startup manager. This tool allows you to change settings in the bootloader and splash screen in Ubuntu Gutsy. Run the following line in your terminal to install this tool.

sudo aptitude install startupmanager

Then, you start up this tool as a root user

sudo startupmanager

You will see a Startup-Manager window like this

Look at the bottom of the window, you have marked all options (Show bootloader menu, Show boot splash, and Show text during boot) like the following picture.


Click "Close" and continue to next step.

You open the usplash configuration file

sudo gedit /etc/usplash.conf

Maybe, the content of your configuration file like this

# Usplash configuration file
xres=1280
yres=1024

You change the resolution in this file to

# Usplash configuration file
xres=800
yres=600

Save file and reboot your Ubuntu box to see the effect. What is your result?

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Today, I want to have a voice chat with my honey. What happen? After the connection connected, she asked me "Do you hear me, honey?" and "I hear you well, how about you?" I said ... but no signal to confirm that she received this words and then again ..."Do you hear me, honey?". It is so funny to know that I have the problem with using microphone. The speaker is good, but probably my microphone doesn't work. I try to find out how to fix this problem and finally this is a solution which I applied.

Open a new terminal and configure alsamixer application as following instructions:

• sudo alsamixer
• Unmute all the outputs by hitting “m”
• Hit tab to go the capture settings
• Highlight the “Mic” setting using the arrow keys
• Hit space to enable the microphone
• Highlight the “Capture” setting using the arrow keys
• Hit space to enable capture
• Hit escape

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Can't you read messages from Windows friends? Can't you read some websites on the Internet? You are surely missing true type fonts which are often used as the default fonts for someone or websites on the Internet.
This post will talk to you how to install Microsoft’s core font package on your Ubuntu system. Run this command in your terminal:

sudo apt-get install msttcorefonts

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