Very Computer

Hi,

Programs like rp3 and kppp are unable to locate my pcmcia modem card. I
get messages like
`Sorry, modem not responding', even though the modem is physically
there. This is w/RH6.1.
It did work with a previous version -- RH5.1.  Any laptop users seen
this before? My pcmcia
ether card is configured correctly however.

My own guess as to reason to this problem is IRQ conflict. Typically the
BIOS setting for
ttyS0 is 4. However since that is the same IRQ for ttyS1, the OS resets
it at boot time to another
available one -- in my case-- to IRQ 11. The `setserial' command gives
me the new IRQ, not
the original BIOS setting. There is no way to check which IRQ programs
like rp3 and kppp are
seeing, so I am not sure if this conflict is what is getting in the way
of finding the modem.

Any suggestions towards thie original problem or towards the IRQ
conflict which may or may
not be causing this problem is appreciated.
Thanks
    -- Avi

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Just went through this myself.  It was fixed in pcmcia-cs-3.1.10.  You
might as well update to pcmcia-cs-3.1.16 (or latest version), but until
then you could try using setserial to set the irq to zero and then back to
the irq that cardmgr in /var/log/messages or 'cardctl config' says it is.  
If that fails, just set it to irq 0 w/setserial and it will work, though,
somewhat slower.

Or add this to /etc/rc.d/rc.local until you update pcmcia-cs:

SERIAL=`/sbin/cardctl ident | grep serial`
if [ -n "$SERIAL" ]; then
        SETMODEM=`/bin/setserial -G /dev/ttyS1`
        echo "Modem settings $SETMODEM"
        /bin/setserial /dev/ttyS1 irq 0
        echo "Tmp setting `/bin/setserial -bg /dev/ttyS1`"
        /bin/setserial $SETMODEM
        echo "Final modem setting `/bin/setserial -bg /dev/ttyS1`"
fi
sleep 3

/dev/ttyS1 typically uses irq 3, but pcmcia-cs assigns it any irq that is
unused unless it is excluded in /etc/pcmcia/config.opts.  You might try
commenting out "exclude irq 3" if there and /cat/proc/interrupts does not
show anything using it.

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Just went through this myself.  It was fixed in pcmcia-cs-3.1.10.
 You
might as well update to pcmcia-cs-3.1.16 (or latest version), but
 until
then you could try using setserial to set the irq to zero and then
 back to
the irq that cardmgr in /var/log/messages or 'cardctl config' says it
 is.  
If that fails, just set it to irq 0 w/setserial and it will work,
 though,
somewhat slower.

Or add this to /etc/rc.d/rc.local until you update pcmcia-cs:

SERIAL=`/sbin/cardctl ident | grep serial`
if [ -n "$SERIAL" ]; then
        SETMODEM=`/bin/setserial -G /dev/ttyS1`
        echo "Modem settings $SETMODEM"
        /bin/setserial /dev/ttyS1 irq 0
        echo "Tmp setting `/bin/setserial -bg /dev/ttyS1`"
        /bin/setserial $SETMODEM
        echo "Final modem setting `/bin/setserial -bg /dev/ttyS1`"
fi
sleep 3

/dev/ttyS1 typically uses irq 3, but pcmcia-cs assigns it any irq
 that is
unused unless it is excluded in /etc/pcmcia/config.opts.  You might
 try
commenting out "exclude irq 3" if there and /cat/proc/interrupts does
 not
show anything using it.

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 http://cgi-help.virtualave.net/