Ubuntu
gnome-nettool package

USB wireless connection failure - Finds network but cant connect.

Asked by Reece Colling

I just recently set up a computer on Ubuntu 10.10 with a USB netowrk adaptor. This worked great during install and connected to the internet instantly and was able to download various updates during the install.
Once installed it worked for about 12 hours when it suddenly disconnected from the network. The adaptor is still working as the network is still visible but fails to connect, any help would be appreciated.

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Ubuntu gnome-nettool Edit question
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Reece Colling
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Mark Rijckenberg (markrijckenberg) said : 		#1

Hi,

Please first connect your wired network adapter to the wireless router using an ethernet cable (also known as a LAN cable).

In order to gather essential troubleshooting information about your wireless card, please follow this procedure:

Step 1: Open Terminal from "Applications->Accessories->Terminal"

Step 2: Please copy-paste the following command from the https://answers.launchpad.net/ubuntu website in Firefox into the Linux Terminal. Do NOT copy-paste from the Email message into the Terminal, as that will only copy PART of the command. The command STARTS with the word sudo and ENDS with the word lsmod. So please copy-paste the ENTIRE command below from Firefox into a Terminal, press <enter>, then enter password when sudo asks for password, then press enter again.

Tip: If you have a wheel mouse or 3 button mouse you do not need to type commands into the Terminal. Highlight the command written on the page. Move your cursor anywhere in the Terminal and press the wheel or middle button. Automatic Copy and paste! No spelling mistakes! No Typos! No other errors!

sudo apt-get update; sudo apt-get install hwinfo grep; sudo lshw -C network; rfkill list; sudo iwlist scanning; cat /etc/network/interfaces; cat /etc/lsb-release; lspci -nn; lsusb; sudo lshw -short; uname -a; dmesg | egrep 'acx|at76|ath|b43|bcm|CX|eth|ipw|irmware|isl|lbtf|orinoco|ndiswrapper|NPE|ound|p54|prism|rtl|rt2|rt3|rt6|rt7|usb|witch|wl'; iwconfig; cat /etc/modprobe.d/* | egrep 'acx|at76|ath|b43|bcm|CX|eth|ipw|irmware|isl|lbtf|orinoco|ndiswrapper|NPE|p54|prism|rtl|rt2|rt3|rt6|rt7|witch|wl'; sudo hwinfo --netcard ; cat /var/lib/NetworkManager/NetworkManager.state; sudo lsmod

Step 3: Please post results (copy/paste terminal output) on this thread. The troubleshooters here need to see the full Terminal output from running the above command.

Regards,

Mark

Revision history for this message
Reece Colling (reece-colling) said : 		#2

Well this is embaressing, apparently moving the wirless and router closer together worked fine...

Revision history for this message
Jeruvy (jeruvy) said : 		#3

Don't be embarrassed! You have learned the #1 problem with WiFi. Flakiness.
I've seen moving a router an inch make all the difference in the world.

Glad you worked it out!

Cheers.