[SOLVED] trouble!

kaz2100 · 02-24-2006, 04:22 PM

Hello Penguins.

I have my linux laptop with DWL-G630 (D-link cardbus) with madwifi driver.

Problem is wireless connection is not good. Too many errors (sometimes 50 or more error packets/one good packet) so that often networking is practically impossible.

With Macintosh (iBook), connection is better (more stable).

I suspect that some noise around me or antena configration gives me this trouble.

Has anybody had get around this problem??

I appreciate any suggestion.

cheers

Hangdog42 · 02-26-2006, 10:23 AM

Although madwifi would be the preferred solution, you might want to give ndiswrapper a try and see if it is a driver problem rather than a noise problem. I would expect noise to affect the iBook as much as Linux, so I suspect a problem with the driver.

kaz2100 · 02-28-2006, 08:49 AM

thanks, but so far, no luck with ndiswrapper.

Hangdog42 · 02-28-2006, 09:26 AM

About the only other thing I can think of doing is setting your access point to operated on one of the ends of the spectrum. Usually wireless routers let you choose which channel to use, but frequently the default is 6, which is right in the middle. Try either channel 1 or channel 11 and see if it helps. If interference is the problem, this usually does the trick.

kaz2100 · 03-02-2006, 03:05 PM

Thanks,

It seems that your suggestion works, although I am not sure if it is statistically significant. I will post followup within a week or two.

kaz2100 · 03-09-2006, 12:02 PM

Hi,

Thank you for your assistance at my other thread. (WUSB54G install)

It looks that WUSB54G can pick up dhcpoffer better than DWL-G630 (I put them side by side).

I also found, for some reason, most of channels discovered by iwlist are either 1 or 11. ??

kaz2100 · 03-22-2006, 10:12 AM

I have tried under many occasions and locations.

It seems that selecting channel makes some difference, but not much. Location, antenna (facing to signal or not) makes huge difference.

Thanks a lot.

Hangdog42 · 03-22-2006, 10:25 AM

That's interesting. I've never noticed that antenna direction made much difference. I wonder if that has anything to do with a specific card? I'm not surprised that channels 1 and 11 are popular. Given that a lot of homes (at least here in the US) have 2.4GHz cordless phones, pushing the wireless networking to one end of the 2.4 GHz spectrum usually helps. However, if there are several wireless networks all trying to work on the same (or nearly the same) channels, that could cause some trouble.

kaz2100 · 03-23-2006, 01:22 PM

Hya,

Although I am not confident if my procedure is correct,

I checked

Code:

iwconfig ath0

every three seconds, while I turn my laptop or walk several steps. "Link Quality" definetely changes depending on location and/or direction of anetnna (which sticks out left side of laptop).

I am wondering if attaching aluminum foil or something could enhance performance. One wavelengh is about 12 cm at 2.4GHz.....