[ubuntu] Lucid Lynx Wireless Keep Dropping (updated)

10 05 2010

After enduring the endless wireless disconnection after upgrading to Ubuntu 10.04 (Lucid Lynx) I have finally found the solution!

The symptoms I was seeing is as such:

  1. connected
  2. after using for 5 minutes to 10 minutes, the wireless network manager get disconnected
  3. only wireless connection selectable is the last network you connect to
  4. unable to re-connect, even after 10 minutes
  5. you must disable the wireless and enable it before you can try to reconnect…
  6. then back to step 1

The steps below worked for me 🙂

  • sudo gedit /etc/NetworkManager/nm-system-settings.conf
  • set the “[ifupdown] managed=false” to true.

Although the above changes reduced the frequency of the wireless drop, but I am still facing it. After thinking it around a bit more, it’s more stable now. Below are what I have done:

  • sudo gedit /etc/NetworkManager/nm-system-settings.conf
  • Changed the file to:





Good luck to you! And have fun with Lucid Lynx. Let me know if this works or if there are other better fix!

Added on June 28, 2010:

With with the fixes above, it has only lessen the problem on my machine and not totally eliminate it. Thanks for the comments on trying out wicd, which i did give it a try. BUT although the wireless connection didn’t drop at all for the 2 days which i have been using it, i see a cap on the wireless transmission rate of 60KB/s (even after trying “sudo iwconfig wlan0 rate 54M”, which is not the problem). This is not acceptable to me, which is why i sent back to using gnome network manager, but for those of you who want to try out wicd, below are the commands:

sudo apt-get install wicd

sudo apt-get remove network-manager

Drop me a message if you have a solution to the transmission rate cap!




7 responses

11 05 2010
[ubuntu] Slow Wireless after Upgrading to 10.04 « Edward's Take

[…] update[10th May 2010]: If you face problem with your wireless connection keeps dropping, and unable to connect back, please refer to my other blog post […]

12 05 2010
14 05 2010
[ubuntu] Lucid Lynx – DVD Writer Not Detected « Edward's Take

[…] but it is starting to irritate me to a certain extent. I have fixed issues such as slow wireless, wireless dropping all the time, and even WebEx. And today, I have finally gotten the DVD burner to […]

14 06 2010

I tried the solutions listed here, but still the problem persisted.

Eventually I uninstalled network-manager and installed wicd. Now everything works fine.

18 06 2010

Mmm thats something weird … thought I havo some other strange problem.
My Ubuntu 10.04 keeps doing the same thing each time that i boot the system.
After some time working on it, suddenly the system becomes slow, so slow that I just can restart X by Ctrl+Alt+Backspace …

After that, all goes as fast as it should…

27 06 2010

I went with wicd but I still have the same problem with wireless.

19 09 2010

Thank you very much. switchin to wicd fixed my problem or thats what it appears to be. but its strange u get 60kb/s instead of 54 mps as my speed is 54 without changing anything… this is a very annoying problem

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