Arch Linux

nachopro

Member

Registered: 2013-08-23

Posts: 89

No 40mhz channel width :(

My AP runs a 2.4ghz wifi with 40mhz channel width. My desktop achieves a 40mhz channel width connection under Windows, but only a 20mhz with Arch.

I use a Intel Corporation Centrino Wireless-N 2230 as wifi adapter.

The info that I found about this tema is related to hostapd, my scenario is a wifi client with networkmanager.

What can I do?

Thanks!

Awebb

Member

Registered: 2010-05-06

Posts: 6,688

Re: No 40mhz channel width :(

Without knowing too much about WLAN drivers, I recommend you rule out NM as the problem and try manually setting up the connection.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,350

Re: No 40mhz channel width :(

How are determining the channel width?  And what kind of bit rates are you actually achieving?

Some deprecated tools (iwconfig) lie.

ewaller@turing ~ [1]1015 %iw wlo1 info  
Interface wlo1
	ifindex 3
	wdev 0x1
	addr 34:e6:ad:17:fe:53
	type managed
	wiphy 0
	channel 149 (5745 MHz), width: 40 MHz, center1: 5755 MHz
ewaller@turing ~ 1016 %iwconfig
wlo1      IEEE 802.11abgn  ESSID:"Woodlyn-hi"  
          Mode:Managed  Frequency:5.745 GHz  Access Point: C4:3D:C7:5D:EB:8C   
          Bit Rate=6 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=45/70  Signal level=-65 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:2  Invalid misc:5057   Missed beacon:0

eno1      no wireless extensions.

lo        no wireless extensions.

ewaller@turing ~ 1017 %

My actual data rate is 70Mbit/sec (up) (thank you speedof.me).  70 happens to be what I pay for with my carrier.

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