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Old 01-13-2008, 02:04 PM   #1
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Gutsy wireless connection does not work/ wired works

Hello, I'm new to Linux. I just installed the Ubuntu Gutsy distro.

I'm having Trouble accessing my wireless internet connection even though my wired connection works fine. At the top right corner, I can view my SSID but cannot connect wirelessly. Linux tries connecting wirelessly, then ultimately settles on the wired connection (which seems to work).

I've tried physically disconnecting my wired connection because I've heard there might be issues having a wired and wireless connection. Also I've tried to manually connect to the wireless connection by accessing System > Administration > Network

In the 'Connections' tab, I've selected 'Wireless Connection' and clicked 'Properties.' Under WIRELESS SETTINGS> I've set my ESSID to NETGEAR; set password type to WPA personal; left the password field empty because I do not have a WPA security-enabled network. Under CONNECTION SETTINGS> Automatic Configuration DHCP

Some relevant info:

PC: Dell Dimension 4600
wireless card: DWL G510
02:01.0 Ethernet controller: Atheros Communications, Inc. AR2413 802.11bg NIC (rev 01)
02:02.0 Modem: Broadcom Corporation BCM4212 v.90 56k modem (rev 02)
02:08.0 Ethernet controller: Intel Corporation 82562EZ 10/100 Ethernet Controller (rev 02)

----------- ROUTER CONFIGURATION SETTINGS ------------

Netgear Wireless Router

Wireless Access Point
[x] Enable Access Point
[x] Allow Broadcast of Name (SSID)

Wireless Card Access List
MAC Address of wireless card has been inputted

Security Encryption WEP
Authentication Type: Automatic
Encryption Strength: Disable


aio85@milkyway:~$ ifconfig
ath0      Link encap:Ethernet  HWaddr 00:13:46:E8:F1:36  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:21 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:4257 (4.1 KB)

ath0:avah Link encap:Ethernet  HWaddr 00:13:46:E8:F1:36  
          inet addr:  Bcast:  Mask:
          UP BROADCAST MULTICAST  MTU:1500  Metric:1

eth0      Link encap:Ethernet  HWaddr 00:07:E9:4D:93:64  
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::207:e9ff:fe4d:9364/64 Scope:Link
          RX packets:19924 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8780 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:7101397 (6.7 MB)  TX bytes:1618571 (1.5 MB)

lo        Link encap:Local Loopback  
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:128 errors:0 dropped:0 overruns:0 frame:0
          TX packets:128 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:10597 (10.3 KB)  TX bytes:10597 (10.3 KB)

wifi0     Link encap:UNSPEC  HWaddr 00-13-46-E8-F1-36-00-00-00-00-00-00-00-00-00-00  
          RX packets:68535 errors:0 dropped:0 overruns:0 frame:8102
          TX packets:2028 errors:10 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:199 
          RX bytes:5152072 (4.9 MB)  TX bytes:97465 (95.1 KB)


aio85@milkyway:~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wifi0     no wireless extensions.

ath0      IEEE 802.11g  ESSID:"NETGEAR"  Nickname:""
          Mode:Managed  Frequency:2.462 GHz  Access Point: Not-Associated   
          Bit Rate:0 kb/s   Tx-Power:18 dBm   Sensitivity=1/1  
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=0/70  Signal level=-85 dBm  Noise level=-85 dBm
          Rx invalid nwid:65801  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
Information posted in madwifi on the DWL G510

Last edited by aio85; 01-13-2008 at 02:37 PM.
Old 01-13-2008, 04:23 PM   #2
Registered: Nov 2003
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Distribution: Ubuntu
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If you aren't using a WPA protected network, then you probably shouldn't be setting the password type to WPA personal. There should be a "None" option. Try using that instead. Unless I'm remembering wrong...
Old 01-13-2008, 08:50 PM   #3
Registered: Dec 2005
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I'd unplug the wired Ethernet connection if you're trying to get the wireless to work. Using two NICs to access the same subnet can cause problems.
Old 01-13-2008, 09:46 PM   #4
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hey wildcat22, there is no 'none' selection under password type.

pentode, i tried to physically disconnect my lan cable from the socket and tried subsequently to connect to the SSID wireless network (which ironically is found).

anyone have any ideas? this is critical.

Last edited by aio85; 01-13-2008 at 09:47 PM.
Old 01-14-2008, 10:52 AM   #5
Registered: Dec 2005
Location: Oregon
Distribution: Debian Testing
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Run the commands (as root) ifconfig and iwconfig again and post the results. I'd leave the Ethernet port unplugged until you get wireless working.

Can you turn off security on the router temporarily?
Old 01-14-2008, 12:14 PM   #6
Registered: Nov 2003
Location: USA
Distribution: Ubuntu
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Have you checked out Ubuntu's Docs to look for ideas there?

Check this for starters:
And there are links for cards similar to yours here: under Wifi/DWL

I agree with pentode, as a sanity check, turn off the security on the router, and/or try different combinations of authentication/encryption.

You also might try completely disabling the wired connection, rather than just unplugging it, just to make sure.

That's all I have at the moment...


connection, gutsy, networking, router, wireless

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