nm-applet lists no network, yet wireless working

nanar69m · 07-29-2014, 03:44 AM

Hi everyone,

I recently updated my Debian (testing), and I now experience an issue with the nm-applet.

Since that, I can see my wlan interface is up and running (it connect automatically to already saved networks, and I can scan available ones with iwlist), but the nm-applet says "no network device available", and on the applet, I cannot list any network and the list of saved networks is empty.

Any idea where I should start to dig?

Thanks in advance!

Details
Linux debian 3.12-1-amd64 - Jessie
Xfce 4.10
Thinkpad T430

cynwulf · 07-29-2014, 05:19 AM

It looks like something else is configuring the network?

Is networkmanager actually running?

Code:

$ ps aux|egrep -i 'network-manager|networkmanager'

nanar69m · 07-29-2014, 06:28 AM

Quote:

Originally Posted by cynwulf

It looks like something else is configuring the network?

Is networkmanager actually running?

Code:

$ ps aux|egrep -i 'network-manager|networkmanager'

Hi cynwulf,

Thanks, here is the output.
Seems like NetworkManager is running. NM back-end seems fine. When I pass the mouse over the applet icon, it says "Wi-Fi network connection 'wlan0' active". Apart from that, it does not show any network.

Any hint?

Code:

root      7540  0.0  0.0 260720  7012 ?        Ssl  10:23   0:01 /usr/sbin/NetworkManager
root      7561  0.0  0.1  14820  8296 ?        S    10:24   0:00 /sbin/dhclient -d -sf /usr/lib/NetworkManager/nm-dhcp-client.action -pf /var/run/dhclient-wlan0.pid -lf /var/lib/NetworkManager/dhclient-aaa842d1-a7b3-4b40-b828-c7dbefa5ea32-wlan0.lease -cf /var/lib/NetworkManager/dhclient-wlan0.conf wlan0

cynwulf · 07-29-2014, 08:02 AM

Yes it does seem to be running normally, still using your previous configuration. I've had similar problems with nm-applet in the past and not sure how I resolved it, as later on I just avoided networkmanager altogether. What I would suggest doing is killing it and relaunching it from a terminal emulator, but don't fork it to background. e.g.

Code:

$ killall nm-applet ; nm-applet

This might give some useful output.

nanar69m · 07-29-2014, 11:56 AM

Hum... it does not say much.
The only message appearing is a warning when I click on "connection information" (right click on applet)
The applet displays "Error displaying connection information: No valid active connections found!", and the console the warning below.

Code:

nm-applet --verbose
** Message: applet now removed from the notification area
** Message: applet now embedded in the notification area

** (nm-applet:14634): WARNING **: info_dialog_update: couldn't find the default active connection's NMConnection!

I also tried looking at the daemon, but nothing weird...

Code:

sudo cat /var/log/daemon.log | grep NetworkManager
...
Jul 29 17:16:45 debian NetworkManager[7540]: <info> Activation (wlan0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jul 29 17:16:45 debian NetworkManager[7540]: <info> dhclient started with pid 13198
Jul 29 17:16:45 debian NetworkManager[7540]: <info> Activation (wlan0) Beginning IP6 addrconf.
Jul 29 17:16:45 debian NetworkManager[7540]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete.
Jul 29 17:16:45 debian NetworkManager[7540]: <info> (wlan0): DHCPv4 state changed nbi -> preinit
Jul 29 17:16:51 debian NetworkManager[7540]: <info> (wlan0): DHCPv4 state changed preinit -> bound
...

nanar69m · 07-31-2014, 03:35 PM

Got it fixed.

A simple

Code:

sudo apt-get install --reinstall network-manager

does the trick. I should have tried that first.

Anyway, thanks for your help cynwulf