Linux za Sve forum

Kod: Označi sve

http://www.hitxp.com/articles/software/ubuntu-fix-slow-wireless-internet-connection-speed-upgrading-11-04-natty-narwhal/



The new Power Management settings in Ubuntu is causing less power to be supplied to the wireless internet device there by constantly slowing down the internet speed in many wireless devices!

Open terminal and type:

sudo iwconfig

- check wireless device name, usually it will be wlan0. Then type:

sudo iwconfig wlan0 power off


It will switch off power mangement by Ubuntu for your wireless device. Now, try download youtube video!
To make this permanently, open as administrator /etc/pm/power.d or simply create that location.
Open gedit, save it as "wireless" on this location after adding following lines:

#!/bin/sh

/sbin/iwconfig wlan0 power off

Kod: Označi sve

http://www.penguintutor.com/blog/viewblog.php?blog=4414



Wireless connection information - speed setting:


1. - Right click on the wireless icon in the top right of the screen and choose "Connection Information". 
the speed as 54Mb/s which is typical of an 802.11g/n network. 

2. - If the speed is less than you expect and the network manager is showing a speed of less than 54Mbps then you can try forcing it to use 54Mbps using iwconfig (temporary solution!). First establish the name of the interface. This can be taken from the Connection Information panel in Network Manager. Change the setting dynamically using the following command:

sudo iwconfig eth1 rate 54M

 
3. - Making the network speed changes permanent - a file "wireless-speed" should be created in location:
/etc/network/if-up.d (opel location as administrator). Contents should be as follows:

#!/bin/sh -e
#
# Sets speed of interface to 54M

if [ "$IFACE" = "eth1" ] ; then
        iwconfig eth1 rate 54M
fi


obviously changing the entries form eth1 as appropriate. The command should be made executable:
sudo chmod 755 wireless-speed

The scripts in the /etc/network/if-up.d directory are all run whenever a network interface is brought up. The script checks to see if it is the interface in question and if so runs the iwconfig command that we ran earlier.