I'm an experienced Linux user, and just installed Slackware 7.0 on a
machine that had been running WinNT. I'm having strange and
interesting PPP problems involving the 'frame with bad fcs' message.
The machine and modem worked fine under NT, and my laptop running an
older version of Linux has no problems on the same phone line.
System:
PPP 2.2.10 (also tried 2.2.11)
Linux 2.2.13
ActionTec V.90 ISA PnP Modem
Local ISP (2 different ones)
Symptoms:
ISP #1 does fails LCP negotiation and fails to connect.
ISP #2 connects fine, but can not download certain files.
Occasional 'error in VJ decompresssion'.
Lots of 'frame with bad fcs' messages.
Details of most interesting problem:
There are certain files that I simply cannot download, whether by
FTP, Lynx, Netscape, or telnet to port 80. As a primary example,
the RealPlayer 7 beta from RealAudio always fails. I can download
this file to a different computer on the same phone line using the
same ISP. I can load the file under NT on the same computer. I can
keep loading other files while the bad file hangs.
Things I have tried based on archived advice:
Dropping the serial port speed: No luck at 57600, 19200, or 9600.
escape FF: fails in LCP negotiation for both ISP's
asyncmap ffffffff: appears to be accepted but makes no difference
crtscts: my modem claims to be running with hardware flow control
novj: does not help but appears to be accepted
different IRQ: does not help
PPP 2.2.11: does not help
Reasons this an interesting problem:
It is reproducible. Searching the web, it seems like other people
have had the same problem, but I haven't seen a solution yet. I
have problems with multiple ISP's, but have no problems with another
Linux machine. It works fine on the same hardware and ISP under NT.
I think this has to be a bug with the current Linux PPP
implementation. How else could everything work under NT with the same
hardware, and with an older Linux on the same phone line? I'll post
appropriate log files if anyone would like to see them. Unless
someone has a ready-made solution, I am going to solve this problem.
Where I should I start looking? What else should I try?
Thanks in advance for any and all assistance,
--nate
Nathan Kurz
[EMAIL PROTECTED]
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