As someone else said, it sounds like your serial port is in polled mode
rather than interrupt driven mode. You probably have an IRQ conflict.
Find all the IRQs used by all your hardware and see what conflicts.
Also check /proc/interrupts and see what Linux thinks is using the irq
you think you should be using for your serial port, probably 3, 4, or 5.
Also, "man setserial" has information that you may find useful.
Douglas Sterner writes:
>I've been working several days now on the following problems. The how
>to's and man pages aren't helping. I'm running 2.0.32 with the ppp rpm.
>
>1) PPP only connects after about 20 dial in attempts. Suggestions?
>
>2) After it does connect and I try to ping the server my time between
>hops is like from
> 500 millisec to 80,000millisec. Netscape does work but the average
>speed to build those web pages is like 12 bytes per sec it stall's alot.
>
> 3) What are optimal settings for the mtu and mru settings. I've tried
>everything from 300 to 1500 and haven't noticed any difference.
>
>If additional info is needed just ask.
>
>Thanks
>
>Euriska
>
>
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