missed wireless connections in NetworkManager

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Marcelo
Posts: 15
Joined: Wed Jul 25, 2012 7:02 pm

missed wireless connections in NetworkManager

Postby Marcelo » Thu Jan 16, 2014 4:24 pm

Hi, this is trivial, sorry... but maybe because of that I can't find a good answer in FAQs and forums.

I once manually deactivated wireless connections in NetworkManager and I can't activate them again, therefore nm does not re-scan connections. I tried purging and reinstalling as a workaround, but after rebooting it was just the same. I'm missing two things:
- a button called "refresh" or "activate wireless".
- somewhere to put "wlan0", as I experienced the same problem with wicd. However, while wicd NEVER scanned until I set "wlan0", nm used to do the job. I'm confused.

Thanks very much.
Regards.

Rex Bouwense
Posts: 988
Joined: Sat Aug 27, 2011 5:44 pm
Location: Sierra Vista, Arizona USA
Contact:

Re: missed wireless connections in NetworkManager

Postby Rex Bouwense » Thu Jan 16, 2014 4:45 pm

When you say you deactivated your wireless connection do you mean that you disconnected it or you disabled it? If you merely disconnected you should be able to reconnect simply by choosing the network. If the file has become corrupted in some way, delete it and then add it again. It appears that you have done that. When you click on the wireless icon in the LXPanel, are "enable networking" and "enable wireless" both checked?
By the way what distro are you using and and what kind of hardware are you using?
Rex
Lubuntu 16.04

Marcelo
Posts: 15
Joined: Wed Jul 25, 2012 7:02 pm

Re: missed wireless connections in NetworkManager

Postby Marcelo » Thu Jan 16, 2014 5:23 pm

I guess I desabled it. (Edit: When "wireless connections" were available in the panel, there was an option to disconnect similar to the one below Wired connections, and I just hit it. So now I think I disconnected it).

If the file has become corrupted in some way, delete it and then add it again.

Which file do you mean and where is it?

When you click on the wireless icon in the LXPanel, are "enable networking" and "enable wireless" both checked?
This is left and right clicks on the nm applet, respectively.
Image Image
This is what the nm shows in the LXPanel (Spanish but simple guessing where "Red" means network -eg "Red cableada" = wired network-). There's nothing about wireless, as you see.

I have Debian Wheezy - LXDE with Fluxbox freshly installed on a Samsung Series5 ultrabook.

Thanks so much for the quick answer

seppalta
Posts: 435
Joined: Tue Sep 20, 2011 6:09 am
Location: USA
Contact:

Re: missed wireless connections in NetworkManager

Postby seppalta » Thu Jan 16, 2014 7:06 pm


Marcelo
Posts: 15
Joined: Wed Jul 25, 2012 7:02 pm

Re: missed wireless connections in NetworkManager

Postby Marcelo » Thu Jan 16, 2014 9:17 pm

seppalta wrote:http://lxlinux.com/#16

After tryng some downloads suggested I couldn't get much help from it. Unfortunately, I can't confirm "There is usually enough information about your connections in Connection Informations to set-up a connection in Edit Connections" either, at least for this case.

Thanks so much anyway.

Rex Bouwense
Posts: 988
Joined: Sat Aug 27, 2011 5:44 pm
Location: Sierra Vista, Arizona USA
Contact:

Re: missed wireless connections in NetworkManager

Postby Rex Bouwense » Thu Jan 16, 2014 10:00 pm

It looks like you may have turned off the wireless button on your machine.
You have to enable networking which you have obviously done (activar red) but you have not enabled wifi. That may be because you have turned off the Wifi button on your machine because there is no option to enable it on your example.

edit: seppalta did not mean to imply that you had to download all of those tools. They are just available.
Last edited by Rex Bouwense on Thu Jan 16, 2014 10:03 pm, edited 1 time in total.
Reason: additional information
Rex
Lubuntu 16.04

Marcelo
Posts: 15
Joined: Wed Jul 25, 2012 7:02 pm

Re: missed wireless connections in NetworkManager

Postby Marcelo » Fri Jan 17, 2014 1:10 am

I'm even more confused!!!
I purged NetworkManager and changed it for Wicd, which I know better, just for a trial. and it doesn't scan either.
I got into another installation in this machine (Debian-Fluxbox as this, but corrupted and now useless for regular things) and had the following answer to the command iwlist:

Code: Select all

root@elsa:~# iwlist wlan0 scanning
wlan0     Scan completed :
          Cell 01 - Address: F8:03:8E:89:73:F7
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=70/70  Signal level=-27 dBm 
                    Encryption key:on
                    ESSID:"SAN-JUAN"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000001bbf85917c
                    Extra: Last beacon: 2804ms ago
                    IE: Unknown: 000853414E2D4A55414E
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 2D1A6E1817FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160B000000000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A00B400C800140005001900
                    IE: Unknown: 7F0101
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: DD1E00904C336E1817FFFF000000000000000000000000000000000000000000
                    IE: Unknown: DD1A00904C340B000000000000000000000000000000000000000000
                    IE: Unknown: DD0600E04C020160
          Cell 02 - Address: 1C:BD:B9:A7:11:0A
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=24/70  Signal level=-86 dBm 
                    Encryption key:on
                    ESSID:"Edda"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                              18 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000010b687e7844
                    Extra: Last beacon: 12168ms ago
                    IE: Unknown: 000445646461
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0100
                    IE: Unknown: 32040C183060
                    IE: Unknown: 2D1AEE1117FF000000010000000000000000000000000C0000000000
                    IE: Unknown: 3D1601050100000000000000000000000000000000000000
                    IE: Unknown: 3E0100
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 7F0101
                    IE: Unknown: DD07000C4307000000
                    IE: Unknown: 0706555320010B10
                    IE: Unknown: DD1E00904C33EE1117FF000000010000000000000000000000000C0000000000
                    IE: Unknown: DD1A00904C3401050100000000000000000000000000000000000000
                    IE: Unknown: DD050050F20500
                    IE: Unknown: DD750050F204104A00011010440001021041000100103B00010310470010706A9C7D4364B3D017661CBDB9A7110A10210006442D4C696E6B102300074449522D363030102400074449522D3630301042000830303030303030301054000800060050F2040001101100074449522D363030100800020086


So, this is hopefully telling me wifi is up because recognizes SAN-JUAN (this is my router) and Edda (my neighbor's :D ). Now, the only switch here is Fn+F12, and Linux seems to have desabled the Fn range of keys. I mean, neither I get wifi nor any other function under Fn (blue) keys. Or even worse, how could I accidentaly have desabled wifi by other means than Fn+F12?.

I'm following http://www.linux.com/learn/tutorials/374514-control-wireless-on-the-linux-desktop-with-these-tools but the command ifconfig wlan0 up returns -for this installation- there's "no such a device".

Any idea on how to go on?

Rex Bouwense
Posts: 988
Joined: Sat Aug 27, 2011 5:44 pm
Location: Sierra Vista, Arizona USA
Contact:

Re: missed wireless connections in NetworkManager

Postby Rex Bouwense » Fri Jan 17, 2014 2:00 am

OK. First enter

Code: Select all

ifconfig

in the terminal.
That will tell you what your wireless adapter is called. It is probably wlan0. That is what mine is and I believe it is the default. Next enter

Code: Select all

sudo ifconfig wlan0 up

in the terminal and press enter. Debian may use su instead of sudo. Use what ever command that will give you root privileges. Also that is wlan0 (zero not capital O) Of course you will be asked for your root password. Enter it and press enter. That should get your connection going again.
Rex
Lubuntu 16.04

Marcelo
Posts: 15
Joined: Wed Jul 25, 2012 7:02 pm

Re: missed wireless connections in NetworkManager

Postby Marcelo » Fri Jan 17, 2014 2:24 am

Code: Select all

marcelo@pcNueva-inst1:~$ su
Contraseña: intended
root@pcNueva-inst1:/home/marcelo# ifconfig
eth0      Link encap:Ethernet  HWaddr 50:b7:c3:06:9e:ee 
          inet addr:192.168.1.65  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::52b7:c3ff:fe06:9eee/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:351 errors:0 dropped:0 overruns:0 frame:0
          TX packets:448 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:313285 (305.9 KiB)  TX bytes:74765 (73.0 KiB)
          Interrupt:41

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

root@pcNueva-inst1:/home/marcelo# ifconfig wlan0 up
wlan0: ERROR while getting interface flags: No existe el dispositivo
root@pcNueva-inst1:/home/marcelo#

Sorry, I already tried that when I wrote last time. This code above is the results for both commands you gave me. "No existe dispositivo" means "Not such a device". Trying them in another Debian installation that runs in another partition (however it doesn't work fine for other reasons) responded more positively giving at least a list of wifi networks.

Rex Bouwense
Posts: 988
Joined: Sat Aug 27, 2011 5:44 pm
Location: Sierra Vista, Arizona USA
Contact:

Re: missed wireless connections in NetworkManager

Postby Rex Bouwense » Fri Jan 17, 2014 2:42 pm

Marcelo, it looks like your the computer is not recognizing your wifi card. Is there an indicator like a light (mine is blue) that tells you your wifi is turned on?
Rex
Lubuntu 16.04


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