It's an IBM ThinkPad model T40.


Jeff Liebermann wrote:
> massello@newsguy.com (Neill Massello) hath wroth:
>
> >But what if the client card is in power-saving mode with all three APs
> >but only the Belkin's high DTIM setting is somehow incompatible with the
> >ThinkPad's card (or firmware or driver)? I took the OP to be implying
> >that this problem only arose between one AP and one client on battery
> >power, although he didn't specify whether any other clients had the same
> >problem with the same AP.
>
> Well, one out of 3 access points is good enough to point to the Belkin
> as the probable culprit. My comments were in reference to the DTIM
> interval. The only way I would guess(tm) it could generate a
> disconnect is if the DTIM interval was set to a fairly large number to
> improve performance and the unspecified model IBM laptop client missed
> a few management frames for some reason. It's probably an older model
> or the OP would have said it was a Lenovo laptop. Reading the
> original description, it seems that the disconnect was instantaneous
> upon removing the AC adapter.
>
> Most IBM Thinkpads use Intel MiniPCI cards with Intel Proset drivers
> and IBM ThinkVantage client. The Proset 9.x drivers were marginal.
> 10.x work quite nicely. There are plenty of options in the wireless
> card advanced properties that could easily screw things up. Methinks
> (not sure) 10.x has a "reset to defaults" button. 10.x does have a
> wireless troublshooter which enables event logging.
>
> ThinkVantage and drivers:
> <http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-4ZLNJB>
>
> Proset:
> <http://www.intel.com/network/connectivity/products/wireless/proset/proset_software.htm>
>
>
> --
> Jeff Liebermann jeffl@comix.santa-cruz.ca.us
> 150 Felker St #D http://www.LearnByDestroying.com
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