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Wednesday, November 11, 2009

APT HOWTO - Managing packages

APT HOWTO - Managing packages
(Click the above link to find out how to install, remove and update packages, HL)

The packaging system uses a private database to keep track of which packages are installed, which are not installed and which are available for installation. The apt-get program uses this database to find out how to install packages requested by the user and to find out which additional packages are needed in order for a selected package to work properly.

To update this list, you would use the command apt-get update. This command looks for the package lists in the archives found in /etc/apt/sources.list; see The /etc/apt/sources.list file, Section 2.1 for more information about this file.

It's a good idea to run this command regularly to keep yourself and your system informed about possible package updates, particularly security updates.

Tuesday, November 10, 2009

Why is My Computer Slowing Down?

Why is My Computer Slowing Down? - PC World

Lincoln Spector

Nov 9, 2009 7:23 am

A41202813 asked the Answer Line forum why his once quick PC is slowing down

A number of issues can slow down a once fast PC. Here are some of the most common.

An overloaded and fragmented hard drive. If your drive is too full (more than about 80 percent), or too fragmented (the two often go together), it could be slowing down your PC, especially if you don't have much RAM.

Defragging is the easiest solution, so you should try that first. To defrag in XP, select Start, then My Computer. Right-click your C: drive and select Properties. Click the Tools tab, then Defragment Now. Vista defrags automatically--or at least it does so in theory. See Vista Defrag Problems for details. Or you can go with a third-party defragger. Forum regular Flashorn recommends the free MyDefrag, which looked pretty good when I checked it out.

If your drive is getting full and defragging doesn't help, you may have to make hard decisions about what you can delete or off-loaded to an external drive. Or you could replace the drive with a larger one.

Avoid new programs. Software has a way of cancelling out Moore's Law--as hardware gets faster, software gets slower. (I attended a programming conference once where Bill Gates advised programmers to write for the most powerful PC currently available, because that would match a normal PC when their product was released.) So if you keep buying the latest office suite or photo editor, performance will suffer.

Watch your security software. You can avoid upgrading Office and Photoshop, but you have to keep your security software up to date or you risk infection. Major security suites like Norton and McAfee use a lot of resources, and keep using more with each major upgrade. They can seriously slow down an older PC. Consider switching to smaller, sleeker (and often free) alternatives. See Can You Trust Free Antivirus Software? and What Free Security Programs Can Protect My PC? for product suggestions.

Reduce the autoloaders. Your security programs probably aren't the only ones that load automatically each time you boot and stay in memory, although they may be the only ones that should. Any number of programs you've installed may have inserted a piece of themselves into Windows' Startup list, and could thus be slowing you down. See Why the Slow Boots? for more information.

You could be infected. See Remove a Virus or Other Malicious Infection for details.

And remember, when it comes to upgrading your hardware, adding RAM is relatively cheap and usually very effective.

My thanks to Flashorn and Rgreen for their contributions to the original forum discussion.

Add your comments to this article below. If you have other tech questions, email them to me at answer@pcworld.com, or post them to a community of helpful folks on the PCW Answer Line forum.

Google offers free Wi-Fi in U.S. airports during the holidays

Google offers free Wi-Fi in U.S. airports during the holidays

IDG News Service - Hoping to bring holiday cheer to harried travelers, Google is footing the bill for Wi-Fi access at 47 U.S. airports through mid-January, so that people can connect free to the Internet while they wait at airline gates and other areas.

Google is working with airports and Wi-Fi providers, including Boingo Wireless, Advanced Wireless Group and Airport Marketing Income, to offer the service. There 47 cities involved including Las Vegas, San Jose, Boston, Baltimore, Houston, Indianapolis, Seattle, Miami, Orlando, St. Louis and Charlotte.

As part of the service, people who log in to the free Wi-Fi service will have the opportunity to make donations to Engineers Without Borders, the One Economy Corporation and the Climate Savers Computing Initiative. Google will match the donations up to $250,000.

The offer ends Jan. 15, except at the Burbank and Seattle airports, which will offer free Wi-Fi indefinitely as a result of the initiative, Google said today.

Last month, Google and Virgin America announced free Wi-Fi service on the airline's flights during the holidays.

Monday, November 9, 2009

OneRoom – Another free Wordpress Theme by Web-Kreation

Web-kreation - OneRoom – Another free Wordpress Theme by Web-Kreation

Finally, it is here!

I am very pleased to release my new Wordpress theme, "OneRoom", a three columns theme with fixed width and widget-ready.

I wanted to design a new theme months ago but actually never had time to work on it. And then, I was moving to Thailand and another couple of weeks past. But now I have settled in Thailand and had no reasons to postpone that job any longer.

I hope you will like this theme as much as I do.

Preview

You can view the theme here »

Download
Download (367.4 KiB, 16,782 hits)

This theme has been tested in all the major Web browsers (Firefox, IE6+, Opera, Google Chrome, Safari). However, if you notice a bug, report it by leaving a comment below. Thanks!

Features
  • Widgetized Sidebars
  • Built-In Author Section in Sidebar
  • Built-in Gravatar Support for Comments
  • Custom 404 error page
  • Built-In Banner Ad Blocks
  • Left Sidebar for PostMetadatas
  • And more.
Requirements

- Wordpress 2.7+

Usage

If you need help with editing this theme or logo, consult the Usage page.

License

Read about it here »

I would like to hear from you

So, what do you think about this theme? Do you like it? Do you hate it? Is there something you would like to be changed or improved?

Changelog

See it here »

Sunday, November 8, 2009

Installing Proprietary ATI Drivers in Ubuntu 8.10

Installing Proprietary ATI Drivers in Ubuntu 8.10 | Logical Insanity

( I used this article as a guideline to install ATI Catalyst Control Center on FoxU, a Ubuntu 8.10 machine, HL)

Because the s-video out of my Mobility Radeon 9600 wouldn't work with the open source drivers in Ubuntu 8.10, I decided to install ATI's proprietary driver. There was nothing listed in Ubuntu's Restricted Driver Manager for my card - so I downloaded the Catalyst Package directly from ATI's website.

After several failed attempts using ATI's automatic driver installer (which resulted in a black or garbled screen after rebooting), I eventually found a manual installation guide outlined at the Unofficial ATI Linux Driver Wiki that worked for me.

I've duplicated these steps below with adjustments made for my particular setup, in addition to extra commenting that would hopefully assist someone completely new to Linux (like myself).

This walk-through makes the assumptions outlined below. If any of this information is different for you - then update the steps to reflect your particular environment. I didn't include extra instructions for a 64-bit system, but the Wiki does.

  • The filename of the ATI driver is:
    ati-driver-installer-9.2-x86.x86_64.run
  • The ATI driver was downloaded to your desktop
  • We are installing this on a 32-bit system

Step 1: BEFORE YOU BEGIN

This may not be a necessary step for you, but because I had messed around so much with the ATI drivers before finally getting them to work, I performed the following Terminal commands to reset my graphics driver back to the original, open source ones so I could be working with a clean slate.

Open Terminal and enter the following command to remove any previously installed restricted fglrx drivers:

$ sudo apt-get remove --purge xorg-driver-fglrx

Now enter the following command to reconfigure the X server. This will put your xorg.conf file back to how it was originally with the open source drivers. WARNING: this will overwrite any customizations you made to the xorg.conf file.

sudo dpkg-reconfigure -phigh xserver-xorg

Ok, with that done - now we need to make sure a few necessary programs are installed before we begin manually installing the ATI proprietary drivers. Open your terminal and enter the following command:

sudo apt-get install build-essential cdbs fakeroot dh-make debhelper debconf libstdc++5 dkms

Step 2: DOWNLOAD ATI DRIVER

Go to ATI's Support and Driver page and use their search tool to get the Linux driver for your particular video card. This guide assumes it is being downloaded to your Desktop

Step 3: CREATE .DEB PACKAGE

Open terminal and enter the following commands to make your desktop the working directory and create the .deb package for Ubuntu Intrepid

Make the desktop your active working directory (replace 'username' with your username):

cd /home/username/Desktop

Now build the driver package for Ubuntu Intrepid:

sudo sh ./ati-driver-installer-9.2-x86.x86_64.run --buildpkg Ubuntu/intrepid

You'll now see a handful of additional files unpacked to your desktop. These are what we'll use to install the driver.

Step 4: INSTALL .DEB PACKAGE

sudo dpkg -i ./xorg-driver-fglrx_8.582-0ubuntu1_i386.deb ./fglrx-kernel-source_8.582-0ubuntu1_i386.deb ./fglrx-amdcccle_8.582-0ubuntu1_i386.deb

NOTE:
I think the instructions from the wiki assume the user understands how to properly reference files in Terminal, which - being brand new to Linux - I did not. Following their instructions exactly failed for me with 'file not found' errors. Instead I added the extra steps of first making my desktop the active working directory and then referencing the unpacked files with './' added before each filename in the command - which worked.

Step 5: UPDATE XORG.CONF FILE

Now we need to make sure the xorg.conf file has the fglrx driver setting added. In terminal, enter the following to open and edit your xorg.conf file:

sudo nano /etc/X11/xorg.conf

Scroll down to the 'Device' section and add the following line of code to that section:

Driver "fglrx"

So the section would look something like this ([...] being the other settings possibly listed in that section):

Section "Device"
[...]
Driver "fglrx"
[...]
EndSection

Save your changes:
On your keyboard, press Ctrl + X to exit nano and then press 'y' to confirm saving your changes. Press your enter key to return to the terminal prompt.

NOTE:
The wiki used gedit to open the xorg.conf file, which I apparently don't have on a fresh Ubuntu 8.10 install…so I used nano instead.

Step 6: INITIALIZE THE DRIVER

Use the following Terminal command to initialize the driver:

sudo aticonfig --initial -f

Step 7: (optional?) ENSURE DRIVER IS USING XORG.CONF

Ok - so I don't know if this step was absolutely necessary and the wiki seemed to indicate not all people would need to do this. Even so, I followed it just in case and it didn't seem to hurt anything.

To ensure the driver is using the changes made to the xorg.conf file, enter the following Terminal command:

sudo aticonfig --input=/etc/X11/xorg.conf --tls=1

Step 8: REBOOT AND CONFIRM

Reboot your system. Afterward, open Terminal and enter the following command to confirm the driver is installed properly:

fglrxinfo

You should now see the following:

OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 4670
OpenGL version string: 2.1.8494 Release

That's it! The ATI driver is now installed. If, like me, you are doing this to enable s-video out on your card - follow the remaining steps if you aren't getting a signal yet on your s-video display or if it is in black and white.

Step 9: S-VIDEO DISPLAY

After installing the ATI drivers above and rebooting, the s-video display should be now working - or at least it was for me. If it isn't for you - then you'll have to do some additional troubleshooting. There is a lot of s-video specific settings for the xorg.conf file you can find from other users on the Ubuntu Forums.

My problem with s-video was that the display was in black and white. To fix this, I had to go into Catalyst Control Center and change the display type for the TV2 display to 'M/NTCS' instead of the 'United States' location option.

To launch Catalyst Control Center, open Terminal and enter the following command:

amdcccle

Saturday, November 7, 2009

ICT for Language Teachers: Using presentation software and online communites in the classroom

ICT for Language Teachers: Using presentation software and online communites in the classroom

Two useful videos at the Teachers TV site

Improving your presentations
http://www.teachers.tv/video/37335
The Teachers TV website describes the video as follows:
Year One primary teacher Lise Bosher is challenged to improve her presentation skills using ICT. Presenting to pupils is something teachers do on a day to day basis, yet many are still nervous about incorporating ICT into their presentations. Lise meets Joe Dale, a middle school French teacher, who is already using ICT technology to enhance his own presentations. After observing one of his classes, Lise returns to her own classroom to put the presentation technology she has learned into action.

Online Communities in the Classroom
http://www.teachers.tv/video/37336
The Teachers TV website describes the video as follows:
Secondary French teacher Marie Guyomarc'h, investigates how to make use of online communities in her classes. Online communities and social networks are often shunned by teachers because of negative publicity and online safety surrounding certain websites. Marie meets with Lisa Stevens, a primary Spanish teacher, who relishes using social media websites for teaching purposes. Lisa explains the benefits of using websites such as Twitter and Voicethread, and demonstrates how you can use them in the classroom. Later, Marie faces her challenge of taking back what she's learned and using it in the classroom.

Graham Davies
Posted by Graham Davies at 13:28

Ubuntu Tip:How to Play VCD using VLC Player

Ubuntu Tip:How to Play VCD using VLC Player | Ubuntu Geek

This is very simple tutorial how to open VCD using VLC Player

Method 1

Run the following command from terminal

/usr/bin/vlc vcd://

Method 2

Open your VLC Player Go to Media—> Open Disc—> Select SVCD/VCD option

If you have any other idea please shre with us.

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