Re: troubleshooting PnP modem on Linux 2.0.29 platform
The modem hangs off 0x2F8, with IRQ 3 the active
interrupt request. 'setserial -a /dev/ttyS1' verifies this
data.
But if I say (from root):
# cu -s 115200 -l /dev/ttyS1
I get a "Permission denied" error, even though
'ls -l' shows /dev/ttyS1 to be read/writable by
user&group.
If I go to kermit and say [this if from the Serial-HOWTO]:
c-kermit> set line /dev/ttyS1
c-kermit> set carrier-watch off
c-kermit> set speed 115200
c-kermit> c
the kermit-shell hangs and I do not get an OK prompt.
But, if I toggle to another Linux screen and say
# cat /proc/interrupts
interrupt 3 is shown with a 0-count. As soon as
kermit is killed, then interrupt 3 disappears from
/proc/interrupts.
All of this, BTW, happens after I successfully dial
out from Win95, and reboot to Linux from the rescue
floppy, ie, without powering off the CPU.
-c
------ Original text --------
> I run Win95 and Linux 2.0.29 off separate hard drives
> running off an AMD K6 platform. Win95 uses a
> Plug-and-Play modem from Computer Peripherals, Inc.
> (a ViVa 56LC-SM). Linux, however, cannot dial out
> on this device; in fact, cu/kermit cannot even connect
> to the device.
>
> I have verified with setserial, /proc/interrupts, minicom,
> and my BIOS configuration that IRQs and other system
> parameters are reasonably set.
Once the device is configured to a known location, either by
your BIOS or by isapnptools, then it should work. What is
the problem exactly when you try to use the modem? If
the port doesn't seem to exist to Linux you might need to
uncomment some parts of /etc/rc.boot/0setserial which
from memory only enables the first two ports by default.
I had a PnP modem working here while testing it, using
isapnptools.
Hamish
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