View Full Version : [ubuntu] [SOLVED] Ath0? Wifi0? Neither works.

August 22nd, 2008, 12:56 AM
Me and Ubuntu Networking have a troubled past. Most of all, I just want to completely uninstall and reinstall the network components so that it works as out of the box. As it is, my attempts to fix it have been unsuccessful.

D-Link or Cisco (so it's not weird, but it is only a single card) wireless card in desktop. There is onboard ethernet, unconnected.
Latest stable Ubuntu, 2.6.24-19
Trying to connect to a broadcasted wireless SSID, WPA1-PSK TKIP
wpa_supplicant is installed
ndiswrapper, madwifi, and a restricted wireless driver were all installed back in better days.
Recently I uninstalled NetworkManager. Configuring the interface with the Network Connection applet always returns "This interface does not exist"

I'm almost too discouraged to type this.

Here are the results of some diagnostic commands as I try to follow "Manual Network Configuration without NetworkManager":

lshw -C network:

description: Ethernet interface
product: 82566DC-2 Gigabit Network Connection
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: eth0
version: 02
serial: 00:1b...
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical
configuration: broadcast=yes driver=e1000e driverversion=0.2.0 firmware=1.1-0 latency=0 module=e1000e multicast=yes
description: Wireless interface
product: AR2413 802.11bg NIC
vendor: Atheros Communications Inc.
physical id: 2
bus info: pci@0000:07:02.0
logical name: wifi0
version: 01
serial: 00:15...
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=ath_pci latency=168 maxlatency=28 mingnt=10 module=ath_pci multicast=yes wireless=IEEE 802.11g

sudo more /etc/wpa_supplicant.conf:


when I run sudo dhclient -r wifi0, a note says:

There is already a pid file /var/run/dhclient.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
wifi0: unknown hardware address type 801
wifi0: unknown hardware address type 801
Listening on LPF/wifi0
Sending on LPF/wifi0/
Sending on Socket/fallback

sudo wpa_supplicant -w -Dmadwifi -iwifi0 -c/etc/wpa_supplicant.conf fails like this:

ioctl[SIOCSIWPMKSA]: Invalid argument
ioctl[SIOCSIWMODE]: Invalid argument
ioctl[SIOCGIWRANGE]: Invalid argument
ioctl[IEEE80211_IOCTL_SETPARAM]: Invalid argument
ioctl[SIOCSIWAP]: Invalid argument

Could not configure driver to use managed mode
Failed to initialize driver interface

ifconfig -a:

ath0 Link encap:Ethernet HWaddr 00:15:...
RX packets:4049 errors:0 dropped:0 overruns:0 frame:0
TX packets:5608 errors:1595 dropped:1595 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:464058 (453.1 KB) TX bytes:677620 (661.7 KB)

eth0 Link encap:Ethernet HWaddr 00:1b:...
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:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback
inet addr: Mask:
inet6 addr: ::1/128 Scope:Host
RX packets:8616 errors:0 dropped:0 overruns:0 frame:0
TX packets:8616 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:694681 (678.3 KB) TX bytes:694681 (678.3 KB)

wifi0 Link encap:UNSPEC HWaddr 00-15...
RX packets:698055 errors:0 dropped:0 overruns:0 frame:1498153
TX packets:238694 errors:592 dropped:1595 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:101914142 (97.1 MB) TX bytes:18432516 (17.5 MB)

In particular, I'm not sure if I'm supposed to use wifi0 or ath0 as my device. Surely the fourth code box is key? What are the wrong parameters I'm using and what should they really be?

If I replace wifi0 with ath0 above, the LPF/wifi0 becomes LPF/ath0/the_mac_address, and there are 3 lines:

DHCPRELEASE on ath0 to port 67
send_packet: Network is unreachable
send_packet: please consult README file regarding broadcast address

I change this file all the time, so hopefully it doesn't make a difference: /etc/network/interfaces

auto lo
iface lo inet loopback

iface wifi0 inet dhcp
auto wifi0

In fact, I've put the full config in there and didn't have any luck.

The router should be at

Can anyone see what is wrong? Thanks for the help.

August 23rd, 2008, 02:32 AM
after endlessly running through wifi troubleshooting lists, manual configuration guides, and madwifi wikis, it's possible I'm slightly closer to fixing it.

At this point, a major symptom seems to be that there is no one dot -> two dot animation in the network-manager-gnome applet, when switching AP's in roaming mode. In addition, signal reception is exaggerated from ~20% into 98-100%. Connection to the unsecured AP near me yields the same effects (no animation, nothing).

Anyone recognize that?

August 23rd, 2008, 03:38 AM
Whe you uninstalled "Network Manager"...you also uninstalled the 'required Driver'.
That's why you're getting the 'this interface does not exist' error.
It may even help...IF you was to 'connect' everything.....through your LAN card. (Your LAN card just might 'recognize' your WiFi..for you.)

August 23rd, 2008, 03:49 AM
The interface was working for a long time with that error occurring. It may be a symptom of the instability that I keep running against, but it's definitely not everything. You're right that the driver was uninstalled. I had run lshw before post 2, and saw there was no driver=. Now it is driver=ath_pci (this is also when I relented and reinstalled net-man-gnome).

I don't understand how to combine eth and ath, but I will keep it in mind as a keep looking for walkthroughs.

August 23rd, 2008, 06:24 PM
Solved. Steps that may have made a difference:

* Downloaded newest madwifi, transferred via USB key. Make, make install in sudo
* Transferred and reinstalled madwifi-tools, wireless-tools, network-manager-gnome
*** Cleared information in "Edit Wireless Networks" (right click the bars). This deleted key information, prompting autoconfiguration.