Iwlwifi does not detect present 802.11n networks

Question

I just got a new laptop, and the iwlwifi driver it's using is not detecting 802.11n networks that I know are there. My old laptop, which is also using the iwlwifi driver, is currently connected to that network less then 2 feet away. The old laptop has kernel 3.4.4, whereas the new one has kernel 3.4.7. Is that the problem, or is it the card?
New laptop:
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 2200 (rev c4)
iwconfig wlan0 says "IEEE 802.11bgn"
Old laptop:
03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] Network Connection
Last edited by Daenyth (2012-08-08 19:35:17)

Answer 1

Gusar wrote:
.:B:. wrote:You're reading things that are not there mate. 802.11n is both a 5 GHz and a 2,4 GHz standard. The old IPW 2200 only does 802.11bg. Had one myself.
I know that. Are you saying the new 2200 only does N at 2.4GHz?
Oh, and I not only had an IPW 2200, I still have it! . Actually, I have an IPW 2915, which also does 802.11a in addition to 802.11bg. It uses the same ipw2200 driver though.
Edit: Did a bit of googling, the new 2200 indeed only does N at 2.4GHz. Let me just say that this is totally and completely insane. It's so insane I couldn't imagine such a thing could even exist.
It's a billion dollar company. What do you expect? I found out yesterday Microsoft actually has a 16 GB memory limit on Windows 7 Home Premium. You need a Pro version to use more. There I was, telling my friend to get 32 GB for his video editing rig.
As for daenyth's card, convention has it that bgn is 2,4 GHz only. An a(b)gn card can do both 2,4 GHz and 5 GHz. You don't need to check specs for that. It's sad indeed, but there are still plenty 2,4 GHz-only 802.11n cards around. This new laptop I got a few months back came with one, and that wasn't a 300 EUR netbook.
Last edited by .:B:. (2012-08-09 11:48:55)