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Date: Wed, 17 Apr 2002 17:10:27 +0200
From: Gunther Mayer <gunther.mayer@gmx.net>
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To: vda@port.imtp.ilyichevsk.odessa.ua
CC: Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>,
        linux-kernel@vger.kernel.org
Subject: Re: traditional bug: only one of two serial ports found on HP Vectra XM
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Denis Vlasenko wrote:

> On 17 April 2002 04:54, Ulrich Windl wrote:
> > historically I believed Linux very much. When it said my HP Vecra XM
> > only has one serial port I was surprised, but believed it. That was
> > some years ago. 2.4.18 still says that there is one serial port:
> >
> > ttyS00 at 0x3f8 (irq=4) as a 16550A
> >
> > However recently I had to work on the backside of the PC and found
> > two(!) serial ports labelled "Serial A" and "Serial B". So shouldn't
> > both ports be detected?
>
> How about opening the case and checking whether those ports actually
> connected to motherboard? Checking BIOS config?
> Without waiting for another 'some years' :-)
>
> Seriously, do you have any reason to think second port is really
> exists beside physical connector?

If it exists, check if "lspnp" on a PNPBIOS enabled kernel would find your
second port. There have been patches to find BIOS configured serial ports
even if not at standard places.

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