Arch Linux

ben-arch

Member

Registered: 2005-12-17

Posts: 115

[SOLVED} 802.11n (300Mb) support - how ?

situation :

Router : TL WR1043N set at "11bgnmixed" auto channel width and max Tx of 300Mb.
Remote : Edimax EW-7728In PCI Card, which should support 802.11n class conenctions.  Client is, ofcourse, running Arch (64 bit) with WICD as connection manager.

Problem :
Connection speed is 802.11g class.  IWLIST RATE shows just 54Mb/s.

How do I configure the card to work at 802.11n (300Mb/s) speed ?

Thanks

Edit on 20-Jan-2010:
The problem is with the rt2860 kernel drivers.
The solution ? Use the manufacturer driver.  Thanks to schuay we have it in AUR here - https://aur.archlinux.org/packages.php?ID=14557.

Ben

Last edited by ben-arch (2011-01-20 03:25:33)

tomk

Forum Fellow

From: Ireland

Registered: 2004-07-21

Posts: 9,839

Re: [SOLVED} 802.11n (300Mb) support - how ?

Always include the chipset and driver you're using when posting a wireless query. Manufacturer name and model number are irrelevant under linux.

ben-arch

Member

Registered: 2005-12-17

Posts: 115

Re: [SOLVED} 802.11n (300Mb) support - how ?

It's a Ralink 2860 device, and teh driver is nuiltin in the kernel.

Ben

tomk

Forum Fellow

From: Ireland

Registered: 2004-07-21

Posts: 9,839

Re: [SOLVED} 802.11n (300Mb) support - how ?

There are two drivers for that chipset - rt2800pci and rt2860sta. You need to check that the driver you choose also supports 11n - hardware support on its own is not sufficient.

ben-arch

Member

Registered: 2005-12-17

Posts: 115

Re: [SOLVED} 802.11n (300Mb) support - how ?

Thanks Tom

I'm using rt2860sta.

iwconfig wlano scan shows "Protocol : 802.11b/g/n" as expected, and also "Bit Rates : 18 Mb/s" (??? very strange).

iwconfig wlano rate returns
"unknown bit-rate information
current Bit Rate : 54 Mb/s"

strange

litemotiv

Forum Fellow

Registered: 2008-08-01

Posts: 5,026

Re: [SOLVED} 802.11n (300Mb) support - how ?

Don't trust iwconfig, it can report wrongly. Did you do some actual benchmarking?

---

ᶘ ᵒᴥᵒᶅ

ben-arch

Member

Registered: 2005-12-17

Posts: 115

Re: [SOLVED} 802.11n (300Mb) support - how ?

Sure

I can transfer large files at 2-2.5 MB/s which is consistent with real life g class speeds (and were actually achieved also with the previous wireless card which was a class g card).

surfed

Member

From: Vienna Austria

Registered: 2009-10-30

Posts: 86

Re: [SOLVED} 802.11n (300Mb) support - how ?

try setting your router at n only and see or encryption to cipher aes only... i remember having issues with this on my 1000h eee, in the end i swaped out my network card for an intel card.

ben-arch

Member

Registered: 2005-12-17

Posts: 115

Re: [SOLVED} 802.11n (300Mb) support - how ?

Will try later.

But there must be a way to manage the driver.  What if I want teh card to only use b class connection ? or control any other parameter ?  How is it done ?

kazuo

Member

From: São Paulo/Brazil

Registered: 2008-03-18

Posts: 413

Website

Re: [SOLVED} 802.11n (300Mb) support - how ?

Will try later.

But there must be a way to manage the driver.  What if I want teh card to only use b class connection ? or control any other parameter ?  How is it done ?

The parameters can be set by iwconfig or by params to module, if the module support it. You can see the possible parameters to module with modinfo. The rt2860sta dont have any param related to a/b/g/n but for example iwlagn have (11n_disable disable n)

EDIT. Of course others parameters can be set in the source code..

Last edited by kazuo (2010-10-30 07:20:47)

AndyRTR

Developer

From: Magdeburg/Germany

Registered: 2005-10-07

Posts: 1,641

Re: [SOLVED} 802.11n (300Mb) support - how ?

You need to stick to AES encryption. Anything else sets a limit to 54MBit/s. See also this thread: http://www.dd-wrt.com/phpBB2/viewtopic. … sc&start=0

ben-arch

Member

Registered: 2005-12-17

Posts: 115

Re: [SOLVED} 802.11n (300Mb) support - how ?

@kazuo : thanks.

@AndyRTR : thanks.  Am using WPA2+AES.

any more ideas ?