[CentOS] Re: CentOS-5 Need Help With Serial Ports

James B. Byrne byrnejb at harte-lyne.ca
Fri Dec 21 21:27:23 UTC 2007


Ok,  I can now configure ttyS1 with faxaddmodem, which I could not do
before these changes, so that is progress.  However, faxaddmodem reports
that it cannot detect a modem on ttyS0.  Since the modem and cable are the
same for both, I am simply physically switching the port that the cable
connects to in order to carry out the configuration, obviously something
else is wrong.

Does anyone have any pointers on how to get the primary serial port back
from xen so that it can be of some use?  can I configure the irq for com1
to use ttyS2? Will that work?

Seizing one of just two available serial devices for a console port
strikes me as a dubious design choice.  I venture that the vast majority
of ES5/CentOS5 installations do not even configure xen doms other than 0
and of those that do, only a vanishingly small percentage actually employ
a serial console interface.

Regards,

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