Hello,
I'm having what would seem to be a rather strange problem. My modem almost
always disconnects suddenly from my ISP after a few minutes online. The
time varies -- sometimes 20 seconds sometimes 45 minutes. KPPP gives me the
message "pppd died". Here's the strange part: using the same modem in
Windows on the same machine calling the same ISP works fine. The modem is a
USR Sportster 28.8 External.
I do have debug for pppd and kppp enabled, and nothing abnormal shows up in
the log(s). Linux thinks that the modem simply hangs up and sees no errors.
Also, on the rare occasion when the connection in Linux lasts, the
throughput is greatly slower than with Windows. I only average 1.3K down
with Linux and the same setup with Windows get me an average of 2.2K. Then,
too, I have the registry tweaked up in Windows to adjust the MTU, TTL, RWIN,
MSS, and NDI Cachesize. BTW, is there any way to adjust these values in
Linux? I already know how to do the MTU and MRU settings, but what about
the others. (These two alone seem to make little if any difference).
I've already contacted my ISP (who supports Linux) and he says my problem is
likely phone line noise (I live out in the country). This is quite
possible, but then why is Linux so much more picky about it? I have had
occasional disconnects with Windows, but only a fraction of the number as
with Linux.
I am using this initialization string with Linux: ATZ. I do not have a
string specified in Windows.
Is there some remedy for this? Do I need a new modem? or do I give up and
revert to Windows for my surfing and emailing?
Thanks for any suggesions,
Jeremy
