Xref: utzoo comp.sys.att:7552 comp.unix.i386:426 comp.dcom.modems:4457 Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!alps!lenny From: lenny@alps.UUCP (Lenny Tropiano) Newsgroups: comp.sys.att,comp.unix.i386,comp.dcom.modems Subject: IPC-802 port board and Telebit Trailblazer modem Keywords: TB, 19200, uugetty, IPC, 6386E WGS Message-ID: <103@alps.UUCP> Date: 12 Sep 89 14:36:41 GMT Organization: American LP Systems, Inc., Bohemia, New York Lines: 56 This has happened several times, and it's becoming quite annoying. Right now we are running a 6386E WGS with 4MB of memory and an IPC-802 port board with Version 3.0 of the drivers. Six of the ports are allocated to direct terminals, or connections to our 3B2 and UNIX pc (using uugetty). Two of the ports, ttyh07 and ttyh08 are allocated to dialout modems. The Trailblazer is on ttyh07 and the AT&T 4024 modem is on ttyh08. It seems sometimes while cu'd to a particular site the modem will hang (this occurs sometimes while operating normally, or while disconnecting). Then the cu process will hang too. I attempt to do a "~." and it will just sit there and not disconnect from the modem. It seems like the modem is in some sort of I/O wait state, and will not relinquish the process. I then toggle to an alternate VT (alt-sysreq-F1) and then attempt to kill the cu processes. Sometimes the second (child to cu) process is still there while the first one is in zombie-land (). The child is then attached to init (pid=1). No signals, even -9 will kill the process. Logging out on the terminal that acquired the modem doesn't even kill the process. Only resource is to shutdown. Most of the time I will get the following messages on the console: uugetty: cannot open "ttyh0#": errno: 6 ... uugetty: cannot open "ttys0#": errno: 6 UID PID PPID C STIME TTY TIME COMMAND root 0 0 0 07:41:11 ? 0:10 sched ... lenny 533 314 0 0:00 lenny 534 1 0 09:53:50 console 0:20 cu burket Sometimes the events that lead up to it is that all the terminals on the machine just come to a screaching halt... slow down, whatever. Then I get the uugetty messages. The cable configurations on both modems are as follows: (we are using RJ-45 8 conductor cable with RJ-45 to DB-25 connectors on both ends) .. 1 ---------------- 1 .. . 2 ---------------- 2 . . 3 ---------------- 3 . . 4 ---------------- 4 . . 5 ---------------- 5 . . 6 ---------------- 6 . .. 7 7 .. 8 ---------------- 8 20 ---------------- 20 Any suggestions would be appreciated! -Lenny -- Lenny Tropiano, Project Manager / Sr. Software Engineer American LP Systems, Inc. E-MAIL : ...{icus,rutgers,sbcs}!alps!lenny 305-1 Knickerbocker Avenue AT&T MAIL: ...attmail!alps!lenny Bohemia, New York 11716 PHONE : 1-516-589-7930