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Wallpaper is an decoration for desktop, its make more beauty for appearance, but kind a boring to watch the same wallpaper over and over again.
On Ubuntu 9.10 (karmic Koala) by default you can find Cosmos as automatically wallpaper changer and it is beautiful, wallpapers will automatically change in every 30 minutes.
How ever, for previous Ubuntu such as 8.10 or 9.04 the wallpaper changer is not set by default, so you have to add and install it by your self.
I use wallpaper tray rather than wally or other thing, 'coz wallpaper tray is supported by community and its ready on synaptic or repository.

1. go to : System >> Administration >> Synaptic Package Manager

2. Type "wallpaper" on Quick search, than find "wallpaper-tray", click it at the box on left.

3. Mark it for installation.

After finishing installation, close synaptic package manager.

Wallpaper tray will not show at Applications, Place or System, so where is it? It shows as panel bar properties. (see update below at the bottom for previous versions of Ubuntu)

5. Right click at panel bar and choose Add to panel...

6. Find Wallpaper Tray, its alphabetical and click it to give an highlight.

Than click at Add button and close it.

7. Wallpaper Tray application will shows on panel bar (its shows an image of your wallpaper).

8. Right click on it and select Preferences.

9. Make any change at More Options to fit your need, or just following mine.

10. Now click at Directory List to add directory of your images (where your wallpapers are).
Make sure you have already set your wallpaper folder created, and click Add button.

11. After you have choose your directory wallpapers folder, click at Apply button.

Your wallpapers will change automatically now, close everything to make sure it is works, watch it change exactly as you wish for rotating interval.

To make wallpaper tray run at the first time every times you log on, just execute it on StartUp Applications.

12. Go to : System >> Preferences >> Startup applications

13. Choose Startup Programs and click at Add button.

14. Type : wallpaper tray at name and command, like the picture below and save it.

You will have very nice automatic wallpapers changer and its works very smooth.... Enjoy !

Grub is dinamically configurable, it loads its configuration at startup, allowing boot-time changes such as selecting different kernels or initial RAM disks, so Grub provides a simple, bash-like, CLI which lets user write new boot sequences.

Targets of Grub2 are :

Grub2 will be the default in ubuntu 9.10 Karmic Koala, so to they who already familiar with the original Grub (Grub Legacy) its must be hard to find where the hell is menu.lst. Darn right you will not find it, coz' they change it as grub.cfg.

Learn more about GRUB2 in ubuntu forum here, definately you will get some headache... (kidding).

There is a simple way to change your Grub menu.lst (grub.cfg), they said they not encouraged this action....

but who care? right? as long as you can take control of your Grub. ^_^ you see that... just to change menu.lst grub you should change it on two different places, and you should also update your grub too.

Basically grub.cfg is read-only file, even attempting to open, edit and save this file using root privileges cannot be done until the 'read-only' status is changed.

If you want to take control of your Grub easily just type this commands on your terminal, this will give you right to make any change on read-only grub.cfg file :

followed this command to change it necessery things you want to change :

Now you can edit that menu.lst as you like, but note this.... don't ever run update-grub command, if you do, it will returned to 'read-only' status.

On one day, I experienced in a situation that only me who have internet connection through HSDPA modem while my other friends doesn't. They asking me to share that connection so they also can connect to internet, but how? I wondering...
None of us have wired to connected each other, so the only choice is using my laptop wifi to broadcast to them, and after trying everything finally its broadcasted and they can connect to me and using that wifi that I shared to browse the world wide web.

Spesify of my laptop are:

Forsa Montevena 3687
Description :
INTEL CORE 2 DUO T7300 2.0 GHZ ( 4MB/L2 CACHE/800 FSB)
INTEL 45 PM Chipset
14.1" WXGA GLARE TFT
2 GB DDR2
250 GB SATA
LAN Gigabit, HDMI, Webcam 2.0 MP
WIFI Intel 5100 ABGN
Nvidia GeForce 9300M GS 512 Gb
DVD-RW SUPERMULTI

use this command :

" sudo apt-get install firestarter "































2. Go to Networks Manager and click on Create New Wireless Network :
























3. Enter a name for new wireless network :


















For example I naming my network as iceman, and I don't use security so I choose none for it, than click on create to continue.
After you click on create you will have a notification that your new network is established, but it can not shared through wifi right away and you have to configure your VPN.

























4. Go to Network Manager and click on VPN Connections >> Configure VPN...























5. Go to Wireless, click on the name you just create and edit it (click on edit) :






















It will showed like this below image, you also can make it connect automatically by clicking on it or not its up to you :































6. Change the mode from Ad-hoc to infrastructure :































And this other setting you should match it :





























































Finally just click on apply....

7. Done... your laptop wifi broadcast will exposed to other wifi nearby, congratulation!

Now when you successfully shared through your laptop wifi this time, you may put some security on next times, so your personal 3.5 G will not be raped and only people who have authorizations can enjoy your HSDPA bandwidth ^_^.

And don't forget to connect your HSDPA modem!

I will glad to answer your questions about how to share laptop wifi if you have a problems to do so.

Today I'm just knew, exciting and hardly can wait for Ubuntu 9.10 code name Karmic Koala.
Mark Shuttleworth said in the official announcement : "Ladies and gentlemen, allow me to introduce the *Karmic Koala*, the newest member of our alliterative menagerie. When you are looking for inspiration beyond the looming Jaunty feature freeze, I hope you'll think of the Koala, our official mascot for Ubuntu 9.10. And if you'll bear with me for a minute I'll set the scene for what we hope to achieve in that time." Even the code name was release on February 20, 2009... well I just know it today... ^_^

KK Focused on the first impression, which promises a smooth and flicker-free startup like Red Hat's Plymouth, for graphical boot on all the cards that support it, so boot will be beautiful, new login experience, also the boot times will decrease even more.

"The desktop will have a designer's fingerprints all over it - we're now beginning the serious push to a new look. Brown has served us well but the Koala is considering other options. Come to UDS (in Barcelona 25-29 May) for a preview of the whole new look." that what Mark said in announcement.

So... like we all might know, Koala is slow but efficient, I just hope KK will not be slow ^_^.