Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a problem where I'm getting disconnected from my wireless network. If I look in the list of NetworkManger it is no longer there, but if I run iwlist wlan0 scan it is found.

$ iwlist wlan0 scan | grep UPC241546362

$ nm-tool | grep UPC241546362

Note that nm-tool is showing a number of other wireless networks.

When I disable then enable wireless networking through NM in the icon-tray, the network is found again and the connection is reestablished.

Does anybody have an idea what's going on and how to fix it?

share|improve this question
Someone might be able to answer if you update and include this information in your question: sudo lshw -C network and lsmod | grep ath and uname -a and lsb_release -a and sudo dmidecode | less | grep 'Product\|Vendor\|Version' – jm_____ Apr 10 '14 at 0:36
up vote 1 down vote accepted


There are 2 files that may benefit you to become familiar with:


I mention these because I have resolved a networking issue by using the "turn if off and on again" method with them. You could modify your /etc/NetworkManager.conf file to read managed=false, save, and back to managed=true. Here's what mine looks like:



You could modify the file using the command: gksudo gedit /etc/NetworkManager/NetworkManager.conf

The more-likely answer to your question may be found in the Official Documentation here: Why does my wireless network keep disconnecting?

The troubleshooter can be very helpful, which starts by clicking Next in the top-right corner of the page.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.