On Thu, Apr 26, 2001 at 11:16:29AM -0500, Keith G. Murphy wrote: > Hall Stevenson wrote: > > > > > > Your problem sounds like a Plug-n-Play one. A similar problem occurs > > with some network cards. Disable PnP on the card. Also, in your BIOS, > > disable the "PnP Operating System" option if you have one. From what > > I've read, that should read "Windows", not "PnP O/S". > > > Hmmm, I'll try it, but I have my doubts. > > You see, the modem actually does work in the sense that you can send > 'AT' strings to it and get 'OK''s back. > > It's just that it never can dial and make a connection successfully. It > seems a more subtle problem than I would think you would have from an > PNP difficulty. > Actually, you will get a response if you have the wrong IRQ, because the Linux serial driver will poll the buffer every several seconds.
The problem comes when there is more data than a simple at and response. The card lifts an IRQ line, but the driver doesn't respond to it because it is listening on another IRQ. This could definitely, be a PnP problem. Mike
