View Full Version : [ubuntu] Wireless Adapter

November 3rd, 2010, 09:52 AM
Hello, I have big problems with my internet in UBUNTU. It works extremely slow without this command -

sudo iwconfig wlan0 power off
Please tell me how to stop this power management by default, because I don't want to write this every time I start my computer. Thank you.

November 3rd, 2010, 02:59 PM
The easiest way is to:
sudo gedit /etc/rc.localAdd a line above 'exit 0:'
iwconfig wlan0 power offsudo is not needed in /etc files.

Mishandling power management is a relatively rare problem, as far as I know. Are you fairly certain there isn't some larger underlying problem?

November 3rd, 2010, 09:48 PM
First, thank you for your help! My wireless adapter is Asus with driver by default rt73usb. With power management my Internet works only when I download something big or watch TV, so when I use it only for web surfing it's really slow. I found this solution in some forum of Arch Linux and for now it's the only way to have a good connection.

November 3rd, 2010, 10:05 PM
Just because I'm curious, I'd love to see:
lsmod | grep -e rt7 -e rt2There are some devices that load two conflicting modules, including rt73usb, and benefit from blacklisting. I wonder if we can tweak your setup.

November 3rd, 2010, 10:51 PM
Got it!

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 0b05:1723 ASUSTek Computer, Inc. WL-167G v2 802.11g Adapter [Ralink RT73]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

rt73usb 24308 0
crc_itu_t 1739 1 rt73usb
rt2x00usb 11316 1 rt73usb
rt2x00lib 31575 2 rt73usb,rt2x00usb
led_class 3393 1 rt2x00lib
mac80211 266657 2 rt2x00usb,rt2x00lib
cfg80211 170293 2 rt2x00lib,mac80211

November 3rd, 2010, 11:17 PM
I don't see any conflicts here. I guess until rt73usb is repaired, power saving off is the only solution.