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Date:      Thu, 21 Nov 2002 10:17:36 +0700
From:      Dmitry Martynov <dm@ngts.kuzbass.net>
To:        freebsd-questions@FreeBSD.ORG
Subject:   z-modem bug
Message-ID:  <22259251731.20021121101736@ngts.kuzbass.net>

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 Good day to all!
 Please hepl to solve unusual error.
 
 I have a Fidonet node on my PC. When a remote modem caller connects
to my side my modem is hanging up after or while EMSI handshake is
running and reports with these words to /var/log/messages:
 
Nov 20 23:44:09 node8 ifcico[28293]:    errno=9 : Bad file descriptor
Nov 20 23:44:09 node8 ifcico[28293]: unable to set raw mode
...
or

Nov 21 01:04:09 node8 ifcico[29731]: cannot open tmp file for bsy lock/var/spool/ifmail/outb.019/aa29731"
Nov 21 01:04:09 node8 ifcico[29731]:    errno=9 : Bad file descriptor
Nov 21 01:04:10 node8 ifcico[29731]: tty_put status=0x01 (req 1053, wrote -1, fl 02)
Nov 21 01:04:10 node8 ifcico[29731]:    errno=9 : Bad file descriptor
Nov 21 01:04:10 node8 ifcico[29731]: tty_put status=0x01 (req 1060, wrote -1, fl 02)
...

 Sometimes user connects successfully, but can't download files
normally using z-modem protocol. The first 4 kbytes downloaded
correctly, but all the other comes with crc errors and very low CPS.
But all TCP/IP connections based on pppd on this computer is absolutely
fine and works without any errors with highest CPS.
 The main and unusual fact is that after system rebooting all things begins to
work absolutely correctly for 2-3 days. After 2-3 days bug comes again.
It will stay until rebooting.

 What is done to kill the bug:
 1. motherboard changed;
 2. modem changed;
 3. ifcico upgraded from 2.14 to 2.15;
 4. FreeBSD upgraded from 3.11 to 4.2, to 4.5, to 4.7.
 5. Filesystem checked.
Now is running 4.7-STABLE.

Thank you very much in advance.
Good luck.





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