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Date:      Sat, 13 May 2000 11:52:24 -0400
From:      Greg Troxel <gdt@ir.bbn.com>
To:        freebsd-mobile@freebsd.org
Cc:        gdt@FreeBSD.ORG
Subject:   thinkpad 600E external serial port?
Message-ID:  <20000513155225.A00F737C041@hub.freebsd.org>

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I have a thinkpad 600E, and the external serial port doesn't get
probed.

I am running FreeBSD 3.3 with a KAME snapshot and local changes, but
none near the serial drivers.

I've tried kernels with and without pnp0.
I've tried with the explicit irq4, and with ?

Here's the bit of my kernel config:

# Serial (COM) ports
device	       sio0	at isa? port "IO_COM1" flags 0x10 tty irq ?
device			sio1	at isa? port "IO_COM2" tty irq ?
# for notebooks/pcmcia modem
device			sio2	at isa? port "IO_COM3" tty irq 5 vector siointr

Things with this notebook are otherwise basically ok; I have X working
and pcmcia cards.  I haven't tried the USB.

The basic result is a boot like this:

 sio0 at 0x3f8-0x3ff flags 0x10 on isa
 sio0: type 8250
 sio1 not found at 0x2f8
 sio2: configured irq 5 not in bitmap of probed irqs 0
 sio2 not found at 0x3e8

Before putting ? for the irq, I got '4 is not in bitmask of probed
irqs'.  Trying to use sio0 results in a hang.  So I believe that the
hardware is just not responding.

I've tried to do 'pnp 1 0 bios enable' and 'pnp 1 0 os enable'.
I've tried setting "quick boot" on and off.

pnpinfo reports no pnp devices.

In windows (which I kept just to run the control programs), I've
turned IR off and the serial port on.

On a TP 760ED, I previously ran ps2.exe to turn off ir and on 'sera'.
However, in that case, sio0 was there the whole time - just hooked up
to the wrong place.

Any clues would be greatly appreciated; a search of -questions and
-mobile didn't turn up any clues about the 600 series notebooks.


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