[SOLVED] wireless card finds networks, but unable to connect

Hi,
I have a notebook with the wireless card "Intel Centrino Wireless-N 1000". According to this site, the drivers are part of the iwlwifi project, so it should be included in the kernel.
I installed wpa_supplicant and wireless_tools, and the interface wlan0 showed up:
# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT qlen 1000
link/ether 04:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN mode DEFAULT qlen 1000
link/ether 74:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
So, I configured my wifi-network without any encryption. I installed netcfg and copied /etc/network.d/examples/wireless-open to /etc/network.d/, changed the essid and enabled debugging:
DESCRIPTION='A simple opened wireless connection'
INTERFACE='wlan0'
SECURITY='none'
ESSID='wrt'
IP='dhcp'
# Uncomment this if your ssid is hidden
#HIDDEN=yes
WPA_OPTS="-f/home/sigma/log"
then I did
# netcfg wireless-open
:: wireless-open up
> WPA Authentication/Association failed
The debug file of netcfg says:
Trying to authenticate with f4:xx:xx:xx:xx:xx (SSID='wrt' freq=2462 MHz)
Trying to authenticate withf4:xx:xx:xx:xx:xx (SSID='wrt' freq=2462 MHz)
Trying to authenticate with f4:xx:xx:xx:xx:xx (SSID='wrt' freq=2462 MHz)
So I tried another wifi usb card, which works fine. I used the same netcfg profile as before and just changed INTERFACE='wlan0' to INTERFACE='wlan1'.
The debug file says:
Trying to authenticate with f4:xx:xx:xx:xx:xx (SSID='wrt' freq=2462 MHz)
Trying to associate with f4:xx:xx:xx:xx:xx (SSID='wrt' freq=2462 MHz)
Associated with f4:xx:xx:xx:xx:xx
CTRL-EVENT-CONNECTED - Connection to f4:xx:xx:xx:xx:xx completed (auth) [id=0 id_str=]
So, the settings seem to be fine, it's probably some problem with the driver or a missing module. Any kind of advice is appreciated.
Thanks in advance.
Last edited by sigma91 (2012-05-12 15:10:26)

The driver indeed has been troublesome lately for that card one reads. Have a try, if the following gets it working:
rmmod iwlwifi
modprobe iwlwifi 11n_disable=1 swcrypto=1
Then try to connect with your profile.

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I'm not entirely sure why.
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firstly, tesserax, a tremendous thank you for your help. unfortunately, i tried each step you suggested, but the problem continues.
step 1: i have tried and failed to connect to several different networks in a handful of locations (home, work, friend's house, local coffee shop, etc.).
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step 5: i reset the PRAM, but the problem still exists.
step 6: i reset the PMU, but the problem still exists.
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The driver indeed has been troublesome lately for that card one reads. Have a try, if the following gets it working:
rmmod iwlwifi
modprobe iwlwifi 11n_disable=1 swcrypto=1
Then try to connect with your profile.

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hello forumites,
firstly, if this post is similar to one that has already been well-read and widely responded to, i apologize and ask that you respond with the link to said thread.
my issue pertains to an iBook G4 (circa 2004 i believe) running OS X 10.4.11 with an apple-installed AirPort Extreme card (firmware version 405.1). i have never had any problems with the card previously, but in the last week it has quite suddenly ceased to connect to any wireless network i attempt to log on to (both password protected and non). despite the card's sudden inability to connect, it still is able to recognize all the wireless networks in my location (i know this as the networks are still listed in the AirPort status pull-down menu).
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firstly, tesserax, a tremendous thank you for your help. unfortunately, i tried each step you suggested, but the problem continues.
step 1: i have tried and failed to connect to several different networks in a handful of locations (home, work, friend's house, local coffee shop, etc.).
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i then tried various combinations of your suggestions, including moving the files out of the preferences folder and then reseting the PRAM and the PMU, but still nothing.
after having attempted every fix i could think of (and that was before posting to this forum) i did a full erase and install of the OS. since that's usually the cure all to whatever ails the computer, it's my assumption that the issue is a physical (hardware) one. that said, if you have any other suggestions i will be more than happy to give them a shot.
thanks again,
brad

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[SOLVED] wireless card finds networks, but unable to connect

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