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Linux - Networking This forum is for any issue related to networks or networking.
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Old 01-05-2009, 05:40 PM   #1
aeuzent
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Wireless Problems on Ubuntu 8.10


I recently wiped my Acer Aspire 3000 and took it back to Ubuntu linux from XP. After a decent amount of work I hit a dead end in the configuration that I need help with. I've managed to get the driver for the laptops wireless installed and it says it's functioning properly. But I can't get it to connect to my router using the gui wireless tools. When I tried to use iwconfig I got a bunch of errors that I generally guess means "I'm not touching that"

I'd be glad for any help you can give.
 
Old 01-05-2009, 06:52 PM   #2
User0x45
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Hello,

perhaps you could question one of your assumptions.

Quote:
Originally Posted by aeuzent View Post
... and it says it's functioning properly. But I can't get it to connect to my router
What is "it" that says it is functioning properly. Make sure your hardware is
correctly detected and supported. Then try to make it do its work.

--User0x45
 
Old 01-06-2009, 03:02 AM   #3
aeuzent
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Well it's listed alright as wlan0. Not really sure how to test it beyond that other than trying to connect.

Code:
aeuzent@Aspire3000:~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wmaster0  no wireless extensions.

wlan0     IEEE 802.11bg  ESSID:""  
          Mode:Ad-Hoc  Frequency:2.412 GHz  Cell: Not-Associated   
          Tx-Power=27 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr=2352 B   
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

pan0      no wireless extensions.

Last edited by aeuzent; 01-06-2009 at 03:04 AM.
 
Old 01-06-2009, 03:32 AM   #4
linuxlover.chaitanya
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Use iwlist wlan0 scan to find out the networks around. It will scan for the wireless networks. If your card is installed properly it will find your network.
 
Old 01-06-2009, 03:45 AM   #5
User0x45
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As linuxlover.chaitanya wrote you need to identify a signal. Here is what I see on my machine:

Code:
bash-3.1# iwlist wifi0 scanning
wifi0     Scan completed :
          Cell 01 - Address: 00:0D:72:90:95:B1
                    ESSID:"bike_republic"
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Quality=5/100  Signal level=-91 dBm  Noise level:-103 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                    Extra:bcn_int=100
          Cell 02 - Address: 00:1F:B3:E4:6E:F9
                    ESSID:"2WIRE137"
                    Mode:Master
                    Frequency:2.422 GHz (Channel 3)
                    Quality=37/100  Signal level=-77 dBm  Noise level:-103 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Extra:bcn_int=100
          Cell 03 - Address: 00:0F:66:38:92:98
                    ESSID:"linksys"
                    Mode:Master
                    Frequency:2.452 GHz (Channel 9)
                    Quality=1/100  Signal level=-95 dBm  Noise level:-103 dBm
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Extra:bcn_int=100
You probably need to be logged in as 'root'. After ensuring that you are getting a signal from your router, you then try to use DHCP to connect. First, you have to see the router.

Also, some GUI networking tools don't translate, whereas the commandline tools should be pretty universal. For instance the KDE networking 'kwifi' doesn't work with Slackware. But Slacks networking scripts work great. YMMV
 
Old 01-06-2009, 12:00 PM   #6
tredegar
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User0x45 is correct in that the command line is the way to get awkward things working properly, as the commands are the same across all distros and all window managers. "Pointy-Clicky" differs a lot.

That said, wicd is great for the ubuntus.
Throw out "Network Manager" (uninstall it) and install wicd instead.
You'll need to add this line to /etc/apt/sources.list before you can install it:

Code:
deb http://apt.wicd.net hardy extras
Note I am running 8.04 (hardy). So you will need to change that in the line above so it applies to your 8.10 - I forget what it is called, but it'll be obvious when you edit the sources.list file.
 
  


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