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Hi I am new to Linux coming from Mac. I have several macs and formerly windows systems connecting to Netgear wpn824 router wirelessly. I just installed Ubuntu 11.10 on my daughter's Samsung NC-20 netbook (she's catching on to the fact that windows belongs in the trash). The NC-20 uses a Atheros 802.11 b/g. I can get the wireless to connect successfully when security 'none' is used but not when WEP or any form of WPA is set up on the router. Network connections requests the password with no joy. Here is an ifconfig -a listing. I have looked for solutions but haven't seen any that address this issue in a way that I can understand/or use. What steps do you recommend that I use to isolate this problem. Thanks, N

eth0      Link encap:Ethernet  HWaddr 00:13:77:e4:30:2f  
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::213:77ff:fee4:302f/64 Scope:Link
          RX packets:9229 errors:0 dropped:0 overruns:0 frame:1
          TX packets:8320 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:9745749 (9.7 MB)  TX bytes:1055834 (1.0 MB)

lo        Link encap:Local Loopback  
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wlan0     Link encap:Ethernet  HWaddr 00:24:d2:6a:7a:76  
          inet6 addr: fe80::224:d2ff:fe6a:7a76/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:5230 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2807 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6182304 (6.1 MB)  TX bytes:414637 (414.6 KB)
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closed as too localized by Jorge Castro, Thomas W., Mitch, jrg Sep 2 '12 at 20:15

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.

what is the output of sudo lshw -class network - when you connect WEP/WPA, are there any dmesg errors reported when you attempt to connect? –  fossfreedom Mar 12 '12 at 21:07
@fossfreedom I ran lshw then attempted to connect to router when set up as WPA2-PSK [AES]. The connection was successful! Then lshw returned a listing in terminal. Trying to figure out how to post the listing. Anyway, the router had never connected before (approx 10 trys). How do I see dmesg errors? Thanks for quick reply. N –  megazoic Mar 13 '12 at 0:39
*-network description: Wireless interface product: AR242x / AR542x Wireless Network Adapter (PCI-Express) vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:01:00.0 logical name: wlan0 version: 01 serial: 00:24:d2:6a:7a:76 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=ath5k driverversion=3.0.0-16-generic firmware=N/A ip= latency=0 link=yes multicast=yes –  megazoic Mar 13 '12 at 0:41
wireless=IEEE 802.11bg resources: irq:28 memory:fd000000-fd00ffff *-network description: Ethernet interface product: 88E8040 PCI-E Fast Ethernet Controller vendor: Marvell Technology Group Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: eth0 version: 13 serial: 00:13:77:e4:30:2f size: 100Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: –  megazoic Mar 13 '12 at 0:42
autonegotiation=on broadcast=yes driver=sky2 driverversion=1.28 duplex=full firmware=N/A ip= latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resources: irq:66 memory:fd100000-fd103fff ioport:5000(size=256) Sorry about pasting the listing this way but I'm still trying to figure out the proper way to post. Thanks for your patience. N –  megazoic Mar 13 '12 at 0:44