How to debug wifi connection?

Posted by mmb on Ask Ubuntu See other posts from Ask Ubuntu or by mmb
Published on 2012-10-31T10:29:47Z Indexed on 2012/10/31 11:14 UTC
Read the original article Hit count: 162

Filed under:

wireless

|

network-manager

I am using Ubuntu's Network Manager to connect to a local wifi router. My problem is, that it often disconnects without any visible reason (router is on, internet connection seems to be working, wifi diodes are blinking). I mostly have to disable wifi from Network Manager, enable it again to get wifi connecting again.

Plus I am often experiencing Network Manager trying to connect to my wifi, trying several times but then giving up.

I even tried an external usb-wifi card, but with the very same results.

My question is:

How can I debug this? Which logs should I read to see what is really happening when all of these errors occur - so I can post them here and see how to proceed?

© Ask Ubuntu or respective owner

Related posts about wireless

Compat Wireless Drivers Centrino N-2230

as seen on Super User - Search for 'Super User'
So I am using linux and am having trouble installing the Compat Wireless drivers Hardware: Intel Centrino N-2230 OS: Linux Mint 64bit (kernel 13.08-generic) I followed this link http://www.mathyvanhoef.com/2012/09/compat-wireless-injection-patch-for.html Output: apt-get install linux-headers-$(uname… >>> More
Ubuntu 12.04 patched b43 driver compilation error

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I tried this How do I install this patched b43 driver? guide to install patched b43 driver on Ubuntu 12.04 with 3.2.0-31-generic kernel but I can't pass compilation phase.Here is what I did: wget http://www.orbit-lab.org/kernel/compat-wireless-3-stable/v3.1/compat-wireless-3.1.1-1.tar.bz2 cd compat-wireless-3… >>> More
Wireless not working on XP (with Intel® PRO/Wireless 2200BG Network Connection card and Zyxel router

as seen on Super User - Search for 'Super User'
Hi all, I just got a new router, cant' get my old xp laptop (Toshiba Satellite) to connect to it, no matter if it's WPA-PSK or WEP (I was kind of thinking with WEP it would've worked but it doesn't). When I go connect and put in credentials the dialog stays up for a few minutes then disappears with… >>> More
Wireless on Medion MD96500 (Intel® PRO/Wireless 2200BG) running Windows 7

as seen on Super User - Search for 'Super User'
I just installed Windows 7 (32 bit) on a Medion MD96500 (Intel 2200BG Wireless Card) and then installed the Windows Vista (32 bit) driver. Now, in the "device driver window", the Wireless Card is listed as working/active. If I want to set up a wireless connection, however, I always get the error message… >>> More
Fedora 12 Wireless problems (Intel Wireless 4965AGN Card)

as seen on Super User - Search for 'Super User'
Hi All, I'm having an interesting experience with my wireless card at the moment. Basically, it does like this: I connect to the local wireless network (netgear router) It works, briefly, allowing me to browse a webpage or maybe two, if I'm lucky. It then stops working / sending any packets, whilst… >>> More

Related posts about network-manager

Macbook Pro Wireless Reconnecting

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I'm using a WPA2 EAP network. I'm sitting next to the access point. The connection keeps dropping and taking ~10 seconds to reconnect. My other devices are staying online. What's causing it? syslog: 01:21:10 dhclient: DHCPREQUEST of XXX.XXX.XXX.XXX on eth1 to XXX.XXX.XXX.XXX port 67 01:21:10… >>> More
Connecting to ItsHidden in Ubuntu 9.10 problems

as seen on Super User - Search for 'Super User'
I try to setup a VPN connection to ItsHidden on Ubuntu 9.10. I double-checked my credentials in the VPN configuration, but I don't think that this is problem. In my syslog I got these messages: Jan 11 14:38:46 NetworkManager: Starting VPN service 'org.freedesktop.NetworkManager.pptp'... Jan… >>> More
How do I get this Cisco VPN client to connect?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I've got Ubuntu 10.10 64 bit and installed network-manager-vpnc and configured the connection but I keep getting this: NetworkManager[1217]: <info> Starting VPN service 'org.freedesktop.NetworkManager.vpnc'... NetworkManager[1217]: <info>… >>> More
Wireless will not connect

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Hello, I have installed Ubuntu 10.10 on the same machine as my windows setup. However, it will not connect to my wireless network. It can see its there, it can attempt to connect, yet it will never connect. It will keep bringing up the password prompt everyso often. I have tried turning my security… >>> More
How to debug Ubuntu/Cisco VPN issues

as seen on Server Fault - Search for 'Server Fault'
I'm trying to connect an Ubuntu laptop (9.10) with some kind of Cisco VPN device; I don't know what's on the other end, and I'm not likely to find out exactly what. I know my company allows VPN from Linux clients because they provide one that I cannot get to install (it fails to compile). I've had… >>> More