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HT40 not working for Intel 5100 AGN ?

DISCUSSION John Wyzer 1 participant 2 messages Jan 7, 2012

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John Wyzer

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Kernel: git tag v3.2

After modprobe:
Detected Intel(R) WiFi Link 5100 AGN, REV=0x54

If have an AP with openwrt configured to work with 802.11g+n, HT40+. A different Laptop with Windows installed connects with 150Mb/s

The maximum bitrate for the aforementioned Intel card however is displayed by iwconfig to be 54 Mb/s which seems to be confirmed by the actual transfer rates.
The connection is being established by wpa_supplicant 0.7.3.

I tried researching this problem but did not really find it documented. Is this a known issue or can I provide further information for debugging?

Many thanks,
John

PS: please include me in the reply.

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#1 lore raw

This was not a bug.
I had to search for ages however to find out about the fact that HT40 only works with WPA2 and not with WPA. ;-)

Excerpts from John Wyzer's message of 2012-01-07 20:42:33 +0100:

Quoted 20 lines

Kernel: git tag v3.2

After modprobe:
Detected Intel(R) WiFi Link 5100 AGN, REV=0x54

If have an AP with openwrt configured to work with 802.11g+n, HT40+. A different Laptop with Windows installed connects with 150Mb/s

The maximum bitrate for the aforementioned Intel card however is displayed by iwconfig to be 54 Mb/s which seems to be confirmed by the actual transfer rates.
The connection is being established by wpa_supplicant 0.7.3.

I tried researching this problem but did not really find it documented. Is this a known issue or can I provide further information for debugging?

Many thanks,
John

PS: please include me in the reply.