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1635014
July 30th, 2012 10:00
centrino N-2230 cant detect 5 GHz WLANs
Hello.
I have intel centrino n 2230 wireless card in my alienware M17X-R4. When I search for available WLANs I can see all 2.4 GHz networks but none 5 GHz.
I have Netgear WNDR3800 AP running openwrt backfire 10.03.1
settings for the AP are:
mode:802.11 a+n
HT mode: 20 Mhz
Channel: 40 (5.200 GHz)
i tried several config alternatives - no joy
i updated the driver of the intel wifi card to the latest - no joy.
i tried to google for such or similar problem but i didnt find anything useful.
can anyone help plz ?
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PudgyOne
9 Legend
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30.3K Posts
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July 30th, 2012 10:00
podhradsky,
The Intel(R) Centrino(R) Wireless-N 2230 is a single band adapter and works on the 2.4GHz band ONLY. It does have Bluetooth.
Rick
PudgyOne
9 Legend
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30.3K Posts
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July 30th, 2012 11:00
podhradsky,
Not exactly the answer you wanted to hear. You are correct, the adapter will not see any wireless connections using the 5.0GHz band, ONLY 2.4GHz. I have many wonder, because they think they have a wireless N adapter but when it's using dual streaming, they claim that it gets the faster speeds, making it a wireless N adapter.
You now know to be cautious in the future when purchasing anything wireless N. It also happens with wireless routers.
Take care,
Rick
podhradsky
3 Posts
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July 30th, 2012 11:00
I checked the available settings of the router again - the problem seems to be that the transmitter capable of using a+n mode is able to use only 5 GHz band (not also a 2.4 like I supposed). And because the centrino wireless card is only 2.4 GHz band capable like you said - it will never see the "second" transmitter of the router.
Thank you very much for help !
podhradsky
3 Posts
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July 30th, 2012 11:00
Ok - so when i configure the AP to operate at 802.11 a+n and in the centrinos settings I enable the 802.11n mode it should work...right ?
PudgyOne
9 Legend
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30.3K Posts
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July 30th, 2012 11:00
podhradsky,
Your wireless router a dual band? If not, then bring it down to Mixed mode. If a dual band, setip a podhradsky_G using these Recommended Wireless Router Settings then setup a podhradsky_N using similar settings.
Try reading...
Intel® WiFi Products — Power Save Polling (PSP) causes connection issues with some access points
Control Panel\All Control Panel Items\Power Options\Create a Power Plan
Select High performance.
Start, control panel, device manager. Click on Network and then right click on your wireless adapter, left click properties, power management. Uncheck the box, allow computer to turn off this device to save power.
Intel ~ Recommended settings for 802.11n connectivity
Rick