X61, Ubuntu 8.04 and Dual Monitors finally work for me

Image via WikipediaFinally got dual monitor to work! I could now run Ubuntu on the external monitor, and a Windows VM on the notebook's LCD panel. I now have a virtual desktop that is sized 2048x768. I am now a happy user of Ubuntu. So far, no major complaint.

Here is my /etc/X11/xorg.conf
-----------------------------------------------------
# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
EndSection

Section "InputDevice"
Identifier "Synaptics Touchpad"
Driver "synaptics"
Option "SendCoreEvents" "true"
Option "Device" "/dev/psaux"
Option "Protocol" "auto-dev"
Option "HorizEdgeScroll" "0"
EndSection

Section "Device"
Identifier "Configured Video Device"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
SubSection "Display"
Modes "1024x768" "1024x768"
Virtual 2048 768
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Synaptics Touchpad"
EndSection
---------------------------------------------

After modification, I press CTRL-ALT-BACKSPACE to restart X.

I than run the following command line to resize the virtual desktop

xrandr --output LVDS --mode 1024x768 --output VGA --mode 1024x768 --left-of LVDS

Reference: Simple dual monitor setup with XrandR in Ubuntu (Linux)

First day to use Ubuntu instead of Vista at work

Today is my first day of work without using Vista.

I really want to like Vista, I really do. I have been trying to like it even though the performance is not as good as I originally expected.

Last week I have to run two VMs for testings and my computer (Lenovo X61 with 3G) ran out of memory. So I thought I bought a 2G ram hoping to at least get 3.5G ram out of it (My Vista is 32-bit only, so I don't I am not getting 4G). But to my surprise, after I spent the money the system shows 3G ram only again. I searched the internet and others are having the same issue.

So I decided to install a 64-bit OS. I could install Vista 64bit or Ubuntu.

I decided to give Ubuntu a try and installed it as my main OS. Linus has come a long way and it is quite easy to setup. I have also installed XP as a VM so I could run WIndows applications if I need to.

It is very easy to install and setup. I could do most of the work almost immediately as I have been using Google Apps for awhile. So far so good in my case, my only complaints is: No good support for dual monitor in my setup. I have another monitor at work and I could only see Cloned desktop view.

I don't know how long I am going to stay with Ubuntu. I think it is a good transition before I could get a Mac. :)

At this moment, I don't miss Vista at all.

Listening to UC Berkeley's Search Engine Class

I have been learning and researching more on search engine lately and I am glad to found out that there is a free 2007 class online on this subject from UC Berkeley, one of the best university in the world.

UC Berkeley Webcasts | Video and Podcasts: INFO 141

I wish they could also post the slides for the class as well so I could visually the algorithm that they are talking about.

The internet has really changed how people learn.

I am currently taking classes from two different universities in HK, yet at the same time I am also listening to this class from UC. All the educational information are available now and the only one stopping me to learn is myself.

I could still remember how difficult it was to find out information on game programming when I wrote my first game using QuickBasic (Yeah...it was a long time ago...). Now, there are so many learning opportunities now and the key is information discovery and filtering.

We are living in exciting time.

[Updated: this 2005 version of the class with Video. I remembered I blog about it before too]

Twitter and the Open Sea

I have a Twitter account for awhile, but I don't use it simply because I don't think it is useful.

I read about the Adobe AIR Twitter client called Twhirl a couple days ago and I decided to try Twitter again. I than tried to follow some well known people on the internet. To my surprise, they also follow me back! Although I don't think I could contribute too much back to them.

Now I see the value of Twitter, it could definitely make the distance between people much closer than before. I could read about them in their blogs, or listen to their podcasts from time to time, but using Twitter you know the person more in a totally different way.

My only problem with Twitter is that I only have 1 friend in US using it, and none of my friends or family use it. It is like shouting to a an open big sea....

How to stop windows from auto restart after auto update

One thing that I really hate about Vista (or maybe it is windows update) is that it will automatically reboot my system at night without my agreement. I am all for having the latest update, but it has destroyed my works many times already. Sometimes I wrote down quick note in notepad as a quick todo list, and I usually have firefox opened up a number of website to do my work. Today I woke up and see them all gone again. AARRrrrrr..

So I found out a quick group policy option from the internet to disable auto-restart. Do it now if you use windows.

Mac OSX becomes more appealing to me again.

Web App 101 and What is Web 2.0?

If you ever want to build your own Web application and make money out of it, you should read this TechCrunch article first. You need to answer the following three questions:

1. Who is it aimed at?
2. Why will they use it?
3. Will they pay for it?

If you are still wondering what Web 2.0 is? Head over here and see read the very funny presentation called "How to bluff your way in Web 2.0". Download PDF Slides and watch the Video.

Very cool user interface face. Watch the video!

The iPhone Multi-touch technology is cool, but it is definitely not the first and the best. You should check out this blog post in Gizmodo, which talks about a touch sensitive panel developed by a New York University Scientist named Jeff Han.

If you don't have time to read the article, go straight to the video and you will be amazed. I am waiting for the next generation of user interface development that contains a flat panel with tactical feedback.