Bug#655941: iwlagn: my wifi card doesn't works - Intel Corporation Centrino Wireless-N 1000 [8086:0084]

["Stefan Lippers-Hollmann" <s.L-H@gmx.de>]

Hi

On Sunday 15 January 2012, Jonathan Nieder wrote:
[...]
> apt-get install iw iproute

for completeness, you need wpasupplicant as well for the 3rd stanza 
of /etc/network/interfaces to work (and you want crda (>= wheezy) to 
access channel 11-13/ most of the 5 GHz band):

# apt-get install iw iproute wpasupplicant crda

> ip link set wlan0 up
> iw dev wlan0 scan
> iw dev wlan0 connect -w myfavoriteaccesspoint
> cat >>/etc/network/interfaces <<-\EOF
> 	iface library inet dhcp
> 	wireless-essid CPLWIFI
> 
> 	iface home inet dhcp
> 	wireless-essid Elephant
> 	wireless-key Mouse
> 
> 	iface cafe inet dhcp

Small syntax fix

> 	wpa-driver nl

This should read
	wpa-driver nl80211

the only valid choices here are:
- nl80211	all modern mac80211 based drivers.
- wext	legacy and staging drivers - don't use, unless you have to.
		it's preferred to just leave out wpa-driver over hardcoding 
		it to wext, because staging drivers will switch to nl80211,
		once they leave staging.
- wired	only for encrypted wired ethernet, basically not used 
		in practice.

Setting wpa-driver explicitly is no longer necessary since 
wpasupplicant 0.7.x (>= wheezy), it will default to nl80211 and fall 
back to wext as needed). However it was needed for wpasupplicant 
<=0.6.x from squeeze and earlier (well, at least lenny and squeeze).

> 	wpa-ssid Cafe Foo Bar
> 	wpa-psk secretsecretpassword
> EOF
> ip link set wlan0 down
> ifup wlan0=cafe

While I have no personal experience with iwlagn/ iwlwifi, it might help
to load the module with "11n_disable=1", as there've been a couple of 
problems with both the firmware and the kernel module in recent times.

Regards
	Stefan Lippers-Hollmann