Solved: Slow network issue in Ubuntu 11.04

I have just upgraded my ubuntu 10.10 to 11.04 and since then i am facing slow network issue with that, even i am not able to open www.google.com.

I have solved this issue after lots of R&D :).. here is the solution.

Step1: goto console.
Step2: now type sudo iwconfig  it will give below output.

Please note Power management is on.. we just have to switch it off and it will be solved.



nav@nav-pc:~$ sudo iwconfig
[sudo] password for nav: 
lo        no wireless extensions.
eth0      no wireless extensions.
wlan0     IEEE 802.11bgn  ESSID:"Airtel"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:1B:57:F4:5E:11   
          Bit Rate=36 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=70/70  Signal level=-31 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:18  Invalid misc:58   Missed beacon:0

Step3: To switch off the power management simply execute this command:

sudo iwconfig wlan0 power off

Just verify it once by running command in setp2 you will notice Power management:off in output.

Thats it.. you are ready to go... just open any site in browser and it will be opened smoothly as it was with 10.10 ..

enjoy and must leave comment if you like it... :)