Wireless-N with Intel card?

ormandj · 2009-04-20 00:23:36

Hi,

I've got an Intel 5300AGN:

iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27ks
iwlagn: Copyright(c) 2003-2008 Intel Corporation
iwlagn 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
iwlagn 0000:03:00.0: setting latency timer to 64
iwlagn: Detected Intel Wireless WiFi Link 5300AGN REV=0x24
iwlagn: Tunable channels: 13 802.11bg, 24 802.11a channels
iwlagn 0000:03:00.0: PCI INT A disabled
iwlagn 0000:03:00.0: firmware: requesting iwlwifi-5000-1.ucode
iwlagn loaded firmware version 5.4.1.16

I can't connect at N speeds, furthermore, iwlist wlan0 scan doesn't show anything above 54mbit/s, even though it's a Linksys WRT310N router. I was running dd-wrt on it, so I flashed it back to the Linksys firmware. I've booted windows here before to test, and it does connect at N speeds.

I am using netcfg2 to connect:

[root@laptop1 examples]# pacman -Q netcfg
netcfg 2.1.3-3
[root@laptop1 examples]#

[root@laptop1 network.d]# cat home-wireless
CONNECTION="wireless"
INTERFACE=wlan0
SCAN="yes"
SECURITY="wpa"
ESSID=ssidwashere
KEY="keywashere"
IP="dhcp"
TIMEOUT=20
[root@laptop1 network.d]#

As mentioned, I connect fine, just at 54mbit. I didn't find any useful information when googling about 802.11n and this card, so I was curious if anybody here has any ideas.

[root@laptop1 network.d]# pacman -Q kernel26
kernel26 2.6.29.1-3
[root@laptop1 network.d]#
[root@laptop1 network.d]# pacman -Q iwlwifi-5000-ucode
iwlwifi-5000-ucode 5.4.A.11-1
[root@laptop1 network.d]#

Thank you,
David

INCSlayer · 2009-04-20 06:36:05

that is because the intel drivers for linux do not yet support N i think there is a experimental patch to make N work but i dont know where to get it

cwjiof · 2009-04-20 11:19:45

I got the same problem.

Using 802.11g for the moment, 802.11n is not working at all... Intel's wifi driver has not supported 802.11n yet.

ormandj · 2009-04-20 14:25:45

Does anybody have an ETA on 802.11n support? I never found any announcements from Intel regarding this. I purchased my laptop with Intel graphics and wireless specifically because of the supposed excellent OSS support, but I've found that their drivers aren't exactly the best lately.

litemotiv · 2009-05-13 23:30:26

guys, i've had working 802.11n on intel 5100 for months here, until this evening that is...

i'm normally on kernel26-ice, so i'm not sure if it was introduced through a patch there or if it 'just worked'. however, i upgraded the kernel to 2.6.29.3 tonight and lost wireless-n. downgraded to stock-arch 2.6.29.3, 2 then 1, still no go. i checked the pacman logs, saw a wireless_tools upgrade, downgraded that too, not working.

so i'm at a loss here for a moment, it worked fine before though. kernel26-ice is a bit broken at the moment so i can't say if it works there again (there were some config changes too), but i'll let you know if there's some mentionable progress.

litemotiv · 2009-05-14 12:03:29

Solved here:

1) install "crda" 

2) edit /etc/conf.d/wireless-regdom, uncomment the line containing your country code

3) edit /etc/rc.conf, add wireless-regdom to the DAEMONS line

4) reboot (probably easiest)

YLearn · 2011-01-20 19:10:28

ormandj wrote:

I can't connect at N speeds, furthermore, iwlist wlan0 scan doesn't show anything above 54mbit/s, even though it's a Linksys WRT310N router. I was running dd-wrt on it, so I flashed it back to the Linksys firmware. I've booted windows here before to test, and it does connect at N speeds.
[snip]
SECURITY="wpa"

First, sorry for resurrecting an zombie, but I stumbled on this in a semi-related Google search so wanted to give a better answer.

There was some early debate on the implementation of the standard, but the Wi-Fi Alliance (trade organization that tests for 802.11 compliance of devices as the IEEE does not - i.e. voluntary process to submit through by companies) and most vendors have stated that the 802.11n standard only allows for two modes of security (three if you want to count personal and enterprise separately), those being clear/open and WPA2 (AES only, as TKIP is actually part of WPA). If any other mode is selected (i.e. WEP and WPA), the generally accepted course is to not operate in HT mode, resulting in maximum connection rates of 54Mbit.

The purpose of this is to eliminate the "insecure" methods of security. Both WEP and WPA are easily cracked by outsiders. WEP was weak from conception, and WPA was a stop gap bridge technology that increases the complexity of WEP (but is still ultimately based on WEP). WPA was needed as AES encryption for WPA2 required specialized hardware and legacy devices obviously did not have this built in.

As the OP is using WPA, he should only be able to connect at a maximum of 54Mbit by the accepted interpretation of the standard. If Windows is allowing him to connect at the HT speeds with WPA enabled, the Windows driver (and the AP firmware) is not adhering to this or the requirements of the Wi-Fi Alliance and should not be able to say it is Wi-Fi certified.

Arch Linux

#1 2009-04-20 00:23:36

Wireless-N with Intel card?

#2 2009-04-20 06:36:05

Re: Wireless-N with Intel card?

#3 2009-04-20 11:19:45

Re: Wireless-N with Intel card?

#4 2009-04-20 14:25:45

Re: Wireless-N with Intel card?

#5 2009-05-13 23:30:26

Re: Wireless-N with Intel card?

#6 2009-05-14 12:03:29

Re: Wireless-N with Intel card?

#7 2011-01-20 19:10:28

Re: Wireless-N with Intel card?

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