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Old 07-14-2015, 08:13 PM   #1
LinuxLiker
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Need to set up Wi-Fi connection for my laptop


Hi -
I have CenturyLink internet service. Just today I took advantage of increased internet speed in my area by having our home upgraded from 1.5mbps to 25mbps. (I'd just as soon skip any debates about what company delivers what on internet speed -- suffice it to say I just want to pick up a good increase in speed).
Before today, with the slower speed and the Belkin modem I've been using, I had no problem connecting my laptop to the home Wi-Fi. Now that we've been upgraded and given a new CenturyLink modem & wireless router device, I can't get my laptop to connect to the wireless internet connection. I've entered the passcode correctly and after the laptop tries to connect for a while I get a message saying WiFi Network Authentication Required.
The laptop is a Lenovo Thinkpad T400. The operating system is Ubuntu 14.04. I don't know the make of the modem -- it's a new one from CenturyLink with the model number C2000.
Does anyone have an idea what I should do to get the laptop to connect to the wireless connection. (I connected my phone this afternoon, so the connection seems to be functioning ok).

Thanks.
 
Old 07-14-2015, 08:48 PM   #2
ardvark71
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Hi...

From the page here, it looks like it's from Actiontec. Is this correct?

While I'm not sure I can help you with this, what wireless adapter does your laptop use? Please post the output of...

Code:
lspci -nnk | grep -i net -A2
Also, what kind of setting adjustments did you make to your modem since first turning it on? Did you first call CenturyLink for support? If not, was there a particular reason?

Regards...

Last edited by ardvark71; 07-14-2015 at 08:50 PM. Reason: Added question.
 
Old 07-14-2015, 08:52 PM   #3
frankbell
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For testing purposes, can you connect via a wired connection?
 
Old 07-14-2015, 08:56 PM   #4
rokytnji
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Since I don't know your wireless connection name/interface. wlan0,eth1,rao or whatever..
You can check via

Code:
sudo grep wlan0 /var/log/syslog*|tee wlan0.tmp | less
^^^^wlan0 is just a example. You can find your wireless info with

Code:
ip link show
Might want to backup and rename /etc/resolv.conf Maybe

with

Code:
sudo mv /etc/resolv.conf /etc/resolv.conf.bak
Edit: Sounds almost like you are telling Network manager in Ubuntu to use your old wpa type of router instead of the wpa this new router is using. Double check that 1st.

eg: wpa vs wpa-psk

Last edited by rokytnji; 07-14-2015 at 09:04 PM.
 
Old 07-15-2015, 03:58 PM   #5
LinuxLiker
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Talking I think I know the problem with my CenturyLink wireless connection

Thanks for the help everyone. I feel very sheepish about this but I'm sure I input the wrong passcode for the wireless connection. As you roll your eyes, please consider that I'm not totally to blame. The technician who set up the upgraded wireless wrote the access code out because the writing on the information sticker that came with the modem was rather small and he wanted to be helpful.
Once I checked the written out code against the code that came with the modem, I saw the difference. I haven't changed the info in my laptop yet but I'm sure this will work. (I had been trying to connect my wife's tablet and when it didn't connect, that led me to check the info. that came with the modem. I used that code with her tablet and cell phone and my cell phone and they all connected).

Thanks again.
 
Old 07-15-2015, 06:23 PM   #6
ardvark71
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Hi...

No worries, I didn't roll my eyes.

Sometimes these things happen but it sounds like it should connect ok.

Regards...
 
  


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