Cristian
> I have recently swaped my PCI winmodem with an ISA Diamond SupraExpress
> 56i modem, hoping to be able to surf the net in Linux. I'm running
> RedHat 6.2, and after configuring Kppp i get an 'modem busy' error
> when I try to connect to my provider. Any ideas what could be wrong
> here? Could it be a hardware conflict with the other cards in my
> system?
I have an identical modem in 3 different Linux systems, and have had it
working under Redhat 5.1 - 6.2. I don't use Kppp though most of the
time - I use diald to do dial-on-demand.
> I have the modem configured on COM3 (as it is working in Win2000). The
> other cards installed in the system are:
> - S3 Trio64 2Mb PCI video card;
> - Realtek 8139A PCI network card;
> - Yamaha SAX ISA sound card.
>
> Any ideas will be greatly appreciated as I'm getting pretty desperate
> here.
First, make sure you do NOT set the modem for PNP operation. I have all
3 of mine setup for COM3, IRQ5. In the BIOS PCI/PNP setup screen for
the PC, you will probably want to ensure the following settings:
1. Set "PNP OS Installed" to NO (the wording of this option could be
different for your system.
2. Reserve IRQ5 for a "Legacy ISA" device. Again, the method for doing
this could vary depending upon your BIOS.
Now, if the modem is on a non-standard IRQ such as IRQ 5, you need to
tell Linux about it. I do this in my /etc/rc.d/rc.local file:
# Setup non-standard serial IRQ's
setserial /dev/ttyS2 irq 5 spd_vhi
That tells Linux that ttyS2 (COM3) is on IRQ5 - the default will assume
IRQ 4, which is also in use by the first serial port (ttyS0 aka COM1).
Hope that helps!
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