ubuntu-7.10 and wireless channel search
SYNass IT Ubuntu / Linux
i-ubux at synass.net
Thu Nov 1 03:35:56 UTC 2007
Your thread may also have to do with my "static IP" settings to my
WL-MAPR (Wireless Modem AccessPoint Router / LinkSYS354G) with its
channel set to 11 !?
I also do NOT want to change to channel 6 assuming that the few WL-AP
around us are using exactly channel 6 by default !?
Now I am wondering if I get some more enlightening to solve my
connection settings properly and as wished. ;-)
It works with charm in OS/2 Warp and XPP !! ;-D
TIA for further assistance and guidance.
On Wed, 2007-10-31 at 20:16 -0600, Ed Arnold wrote:
> Derek Broughton wrote in response to my post:
> > Today's Topics:
> > 2. Re: ubuntu-7.10 and wireless channel search (Derek Broughton)
> > Message: 2
> > Date: Wed, 31 Oct 2007 19:49:43 -0300
> > From: Derek Broughton <news at pointerstop.ca>
> > Subject: Re: ubuntu-7.10 and wireless channel search
> > To: ubuntu-users at lists.ubuntu.com
> > Message-ID: <3859965.vPNYkcqPLa at cedar.serverforest.com>
> > Content-Type: text/plain; charset=us-ascii
> > Ed Arnold wrote:
> > > I'm a Ubuntu Newbie who just installed Ubuntu 7.10 on a Dell D810
> > > laptop, which has a Intel PRO/Wireless 2200BG card.
> > >
> > > This machine is dual-boot; the other OS is XP. When I boot XP, I can
> > > change the channel number on my wireless router from 6 to 11, and XP's
> > > wireless driver sees the change and does the right thing. (I really want
> > > to change to channel 11, because my neighbors are all crowded together on
> > > channel 6.)
> > >
> > > When I boot Ubuntu, wireless works fine so long as my wireless router
> > > is set to channel 6.
> > I'm not sure what you're trying to accomplish - channel selection shouldn't
> > even be possible on the client. You set your router to use a channel, and
> > the client adapts. My router is on channel 11.
> That's not what I intended to convey; I am setting the channel at the
> access point, i.e. the router, and not on the client. When the channel
> is set at 6 (2.437GHz), both Windoze XP and Ubuntu are happy. When I
> reset the channel to 11 (2.462GHz), XP adapts correctly, but the Ubuntu
> 7.10 driver doesn't. Why it doesn't is a mystery to me, as it is my
> understanding that the receiver in these cards is supposed to
> automatically tune itself to the frequency of the strongest signal.
> However, I suppose it's possible that these wireless cards are really
> dumb devices that don't auto tune, and that the host driver software has
> to do the scanning by setting the card's receive frequency and reading
> signal strength for each channel 1-14. Do you know if that is in fact
> the way the card's interface works?
> > > My question is: how do I find out if the inability of Ubuntu's wireless
> > > driver to do channel search, is a problem already known to the Debian/
> > > Ubuntu developers?
> > I would guess it isn't - because, at least for some of us, that's not a
> > problem.
> > But now that you mention it, why on earth do both Network Manager and
> > iwconfig report your channel as a Frequency? How difficult could it be to
> > map that to the channel set on the router?
> Sure, I could change the channel to 11 at the router, then type in
> "iwconfig eth1 channel 11" on the client, but that's not how wireless
> is supposed to operate. And, if I were in a building doing a lot of
> roaming, I sure wouldn't want to have to be typing iwconfig commands
> constantly to try to find a strong signal. Either firmware on the
> wireless card, or software in the host driver, is supposed to
> periodically scan the channels for the strongest signal, and either
> associate with the strongest, or hand the data to the user and let him
> make an association. Obviously, Windoze XP does this correctly; the
> question is, why doesn't Ubuntu do the same thing?
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