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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
                ESSID:"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?

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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' –  jmunsch Apr 10 at 0:36

1 Answer 1

up vote 1 down vote accepted

Arnold,

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

/etc/interfaces
/etc/NetworkManager.conf

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:

[main]
plugins=ifupdown,keyfile
dns=dnsmasq

[ifupdown]
managed=true

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.

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