Add wireless

auto wlan0
iface wlan0 inet dhcp
wireless-essid MYNETWOTK
wireless-key FEFEFEFEFE
wireless-channel 11
wireless-mode managed

Bootup time.

There are a few links about reducing boot up time.

http://elinux.org/Boot_Time
http://free-electrons.com/docs/optimizations/
http://guvnr.com/pc/ubuntu-disable-services/

Splash Screen

The latest Karmic ubuntu use xsplash. All the pictures are in /usr/share/image/xplash.

Here is a link you want to check out if you want to change it.
http://georgia.ubuntuforums.org/showthread.php?t=1333683

To totally remove it to save time on boot.

cp /etc/dbus-1/system.d/xsplash.conf ~/xsplash.conf
sudo rm /etc/dbus-1/system.d/xsplash.conf
sudo touch /etc/dbus-1/system.d/xsplash.conf

Correct time

The wireless router does not allow NTP access to the ntp server. Other method need to be used to sync time. One thing I am going to use is the navy.mil timer. The following python code will set the system time to the time from navy.

#!/usr/bin/python
import urllib2, os
Time_Url="http://tycho.usno.navy.mil/cgi-bin/timer.pl"
fp = urllib2.urlopen(Time_Url)
data = fp.read().split()
Month=data[34][4:7]
Day=data[35][0:2]
Time=data[36]
Set_Date= Day+ " "+ Month+" 2010 "+ Time
print Set_Date
os.execlp("/bin/date", "date", "-s", Set_Date)
fp.close()

Auto login

To make auto login in runlevel 5, you can change /etc/gdm/gdm.conf.

To change your run level and auto login, you need to do the following.

in /etc/init/rc-sysinit.conf:
---------------
env DEFAULT_RUNLEVEL=3
---------------

in /etc/init/gdm.conf:
---------------
start on (filesystem
and started hal
and tty-device-added KERNEL=tty7
and (graphics-device-added or stopped udevtrigger)
and runlevel [!3])
stop on runlevel [016]
---------------


The default login is getty, which does not support auto login. You need install mingetty and change your /etc/init/tty1.conf as the following:

---------------
# tty1 - getty
#
# This service maintains a getty on tty1 from the point the system is
# started until it is shut down again.
start on stopped rc RUNLEVEL=[2345]
stop on runlevel [!2345]
respawn
#exec /sbin/getty -8 38400 tty1
exec /sbin/mingetty --autologin setup tty1
----------------

So the runlevel will enable you into runlevel 3,and mingetty will enable the autologin. The next thing you need to do is to auto start x-window.

.xinitrc
----------------
/usr/bin/python /home/setup/python/updated_V19.py
----------------

.profile add the following line to the end.
----------------
startx
----------------

\n

USB hub

If I need to create my own USB hub, here is the link I can check.

http://www.howtofixcomputers.com/forums/homebuilt-pc/make-usb-hub-27036.html

Wireless problem solved?

It appears that the wireless AP I connected to has "ping" disabled. Even though I can't ping anywhere, which was what I have been trying in the past few days, I can still browse the internet. I am not sure what other function has been disabled. I will figure it out tomorrow.


The Belkin wireless adapter uses rt73 driver. That can be installed from the kernel. Once installed. You can use a command line:

-------------
sudo iwconfig wlan0 essid "NDSU"
sudo dhclient wlan0
sudo ifconfig
-------------

That should work and make. If the wireless gets lost after reboot, you need change the interfaces and add dhclient to rc.local file.