On Tue, Mar 09, 2004 at 09:48:55AM -0500, Ken Januski wrote:
> Pigeon wrote:
> >Your /proc/interrupts output shows irq 3 being allocated to "serial",
> >which is probably the serial port being used for your modem, which
> >probably explains why ppp is involved in the conflict.
> >
> >Rather than trying to force the ethernet card to use another IRQ, it
> >may be easier to force the serial port to use another IRQ, by changing
> >its config in your BIOS Setup. IRQ 4 would be a good alternative,
> >since it is (a) a standard for serial ports and (b) not currently in
> >use. Check your init.d setserial settings as well.
> >
> Thanks Pigeon,
> 
> I've been experimenting wth changing settings in serial.conf but have 
> had no luck. Though dmesg says that a modem is found at ttys00 with an 
> irq of 4 setting that in serial.conf results in a hanging modem. I keep 
> having to set it to ttys0 with irq of 3. 

...which is a little puzzling, because irq 4 is the standard for
ttyS0. What does 'setserial /dev/ttyS0' report?

What you set in serial.conf should follow what the BIOS setup has been
configured to; ie. you configure the BIOS setup, and then change
serial.conf to correspond with it (if the kernel hasn't figured it out
automatically).

And, your modem really is on ttyS0 (COM1)? Do you have a serial mouse?

Does the output from 'cat /proc/interrupts' change according to
whether ppp is or isn't running?

> I'm really unclear about how to 
> change anything in the bios setup. Can you give me any idea as to how to 
> try that?

It's hard to be specific because this varies according to what BIOS
you have and how old it is. Basically, at the start of the boot
process - the bit where it does the memory test - you get the chance
to press a magic key, often DEL or F2 but unfortunately there are
plenty of other ones used by different BIOSes, which brings up a set
of menus; somewhere under this there are usually options for
configuring the serial (and parallel) ports, which allow you to
specify what address and IRQ they are to use. You then press another
magic key, usually F10, to save your changes and reboot. The best way
to find specific information is to try and download the manual for
your motherboard from the manufacturer's website; if you can't find it
there, google for it.

-- 
Pigeon

Be kind to pigeons
Get my GPG key here: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x21C61F7F

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