Cannot get TRENDnet TEW-441PC wireless card to work in Ubuntu

After I had Ubuntu installed successfully on my laptop, my next project is to get it work with Wifi. I wasn’t sure which PC card to buy at first. Then I read about MADWiFi‘s compatibility with the TRENDnet TEW-441PC wireless card and the rebates for that card which ended yesterday through CompUSA so I went out and bought it.

There was no Wifi at home until my hubby set it up on the Linksys WRT54G router he was given through work. We tested it out with his Dell Axim PDA and it worked well. I plugged the PC card into the laptop and started up Ubuntu. The startup seemed to take a little longer which I interpreted as it was recognizing the new hardware. When the desktop showed up, I received a warning about a restricted driver and it was shown as the “Atheros Hardware Access Layer” in the Restricted Driver Manager. There wasn’t much I can do about the warning so I just took a mental note. I then went into System -> Administration -> Network and edited the Wi-Fi connection properties but magic didn’t happen except that our home’s ESSID was recognized.

I searched Ubuntu Forums and ran couple of commands in the Terminal but no luck. Here are a few commands and portions of the output:

$ sudo lshw

*-network
description: Wireless interface
product: AR5212 802.11abg NIC
vendor: Atheros Communications, Inc.
physical id: 1
bus info: pci@14:00.0
logical name: wifi0
version: 01
serial: 00:18:e7:25:71:79
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=ath_pci driverversion=0.9.4.5 (0.9.3.1) ip=192.168.1.103 latency=168 maxlatency=28 mingnt=10 multicast=yes wireless=IEEE 802.11g
resources: iomemory:24000000-2400ffff irq:11

$ sudo lshw -businfo

pci@14:00.0 wifi0 network AR5212 802.11abg NIC

$ iwconfig

ath0 IEEE 802.11g ESSID:”homewifi” Nickname:””
Mode:Managed Frequency:2.437 GHz Access Point: 00:14:BF:2F:F7:F8
Bit Rate:54 Mb/s Tx-Power:18 dBm Sensitivity=0/3
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality=52/94 Signal level=-43 dBm Noise level=-95 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

$ sudo dhclient ath0

Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

wifi0: unknown hardware address type 801
wifi0: unknown hardware address type 801
Listening on LPF/ath0/00:18:e7:25:71:79
Sending on LPF/ath0/00:18:e7:25:71:79
Sending on Socket/fallback
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 7
DHCPOFFER from 192.168.1.1
DHCPREQUEST on ath0 to 255.255.255.255 port 67
DHCPACK from 192.168.1.1
bound to 192.168.1.103 — renewal in 40725 seconds.

$ iwconfig

lo no wireless extensions.

eth0 no wireless extensions.

irda0 no wireless extensions.

wifi0 no wireless extensions.

ath0 IEEE 802.11g ESSID:”homewifi” Nickname:””
Mode:Managed Frequency:2.437 GHz Access Point: 00:14:BF:2F:F7:F8
Bit Rate:36 Mb/s Tx-Power:18 dBm Sensitivity=0/3
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality=52/94 Signal level=-42 dBm Noise level=-94 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

It seems to me it is not a driver problem but I just don’t know what else to do. I hope someone might offer me help.

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4 thoughts on “Cannot get TRENDnet TEW-441PC wireless card to work in Ubuntu

  1. I have the same problem with my R51e laptop with AR5212 wireless card. i just cannot make it go, even with 8.04. It is picking up my AP fine — I am suspecting the wireless card is not transmitting anything perhaps?

  2. @lofh: Please check out the later posts listed in my comment above yours about Wifi working on my laptop.

    If your situation is related to using the card in Linux, I recommend visiting the MADWiFi website to check out their listing of compatibility on various wireless devices working in the Linux environment.

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