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RE: Wireless (again)




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> Date: Fri, 25 Jan 2008 22:12:59 -0500
> From: maximilianbianco gmail com
> To: fedora-list redhat com
> Subject: Re: Wireless (again)
> 
> Max Pyziur wrote:
>> On Thu, 24 Jan 2008, Al Thompson wrote:
>> 
>>>
>>> Well, I FINALLY got wireless working on my Compaq laptop.  I never got 
>>> the interal Broadcom wlan working, but I got a Belkin USB wirless to 
>>> work last night, after months of fiddling with it.
>>>
>>> Now I have one related problem:  My mouse is also USB, and whenever 
>>> there is heavy wireless activity, my mouse doesn't work at all.  Is 
>>> there a way around this, or is it just the nature of having two USB 
>>> devices? I thought there was a way to "reserve" a certain bandwidth 
>>> for each device, but can't find anything on it.
>> 
>> Good to hear that someone has had success on this front. I, too, have 
>> been trying to get consistent WiFi results. I've been working with three 
>> different NICs, one USB, the other two PCMCIA.
>> 
>> The one one with which I've been successful has been a Netgear WG111US 
>> Wireless USB 2.0 Adapter. However, its performance has been erratic. I 
>> can successfully connect to my WAP, work for a while, and then the 
>> connection drops. I notice that the device gets especially hot and am 
>> wondering if this is the cause for its eventual failure. Comments?
> 
> Heat is the enemy of any electronic device. If its overheating its 
> probably not much longer for this world, unless you can find a way to 
> cool it before the damage becomes irreparable.
>> 
>> On the PCMCIA front, I've been testing two cards: an old Linksys WPC111 
>> (only 802.11b) and a Netgear WPNT511.
>> 
>> WPC111:
>> lcpci does not see the Linksys WPC111, but ifconfig -a does. I can 
>> assign a static IP to the WPC111 and use other commands to configure it 
>> to work with my WAP but I get no throughput.
>> 
>> WPNT511:
>> lscpi identifies the Netgear WPNT511, but ifconfig -a does not. I have 
>> used ndiswrapper to load the appropriate driver and my results are still 
>> the same.
>> 
> Everyone always seems to focus on the model of their wireless card. It 
> is the chipset that matters most.
> Finding out which chipset your card has can be a real pain in the ass. 
> Sometimes the same model cards are manufactured using several different 
> chipsets on different production runs. Look at the model number and 
> REVISION on your card and google to determine which chipset you have, 
> sometimes a serial number can help but it all depends on what info is 
> available for your card. If your getting partial functionality then 
> maybe this latest kernel update will do it for you. The HCL lists most 
> of the compatible chipsets.
> If you find your chipset is supported but it isn't working anyway then 
> maybe a small tweak is all that's needed or to find the right drivers 
> for it.
> 
> -Max
> 
> -- 
> fedora-list mailing list
> fedora-list redhat com
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I can personally verify the heat factor of this discussion- I have had numerous troubles with my laptops (with built-in wireless 2200bg) over some months using various linux variations, FreeBSD, and Windows. My laptop was overheating and shutting down as a result (to give you an idea of how bad the situation was) and running at around 76 degrees under no load. The wireless was constantly dropping out under fedora, but thanks to the network manager in gnome managed to resolve itself rather quickly. It would still drop speed from 56 to as little as 2 though.

Under FreeBSD and windows though, it would drop out completely. Windows would say it was connected but it wouldn't work, and BSD would lose association with the AP. At times the driver would even panic and crash.

Once the overheating was fixed I have had absolutely no probs whatsoever with my wireless, although I have not returned to using windows on this laptop- and never will.

Anyway, that;s my 2c.

Cheers
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