Re: 2.6.24: Serial disabled in BIOS but serial modules still loaded(probably PnP related)

From: David Newall
Date: Sun Nov 25 2007 - 02:54:34 EST


Michael H. Warfield wrote:
On Sat, 2007-11-24 at 23:36 +0300, Andrey Borzenkov wrote:
I have no COM port on notebook (without port replicator which I do not have)
so COM is disabled in BIOS. No ttyS* is detected during boot (and no device
created) but I just noticed that serial modules are still loaded. Well, this
partially defeats the purpose of disabling COM port - the intention was to
free resources by *not* loading unneeded modules ...

This may have something to do with (ACPI) PnP which apparently believes COM is alive.
Notebook is Toshiba Portege 4000.

Nice... What's this then?

00:09 PNP0501 16550A-compatible serial port
state = active
io 0x3f8-0x3ff
irq 5

This doesn't mean that a port (ie connector) is present. My notebook also has the electronics without the physical connector.
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