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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!news.cis.okstate.edu!news.ksu.ksu.edu!news.mid.net!sbctri.tri.sbc.com!newspump.wustl.edu!gumby!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!cs.ubc.ca!cs.ubc.ca!not-for-mail From: davef@cs.ubc.ca (David Finkelstein) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Modem problem Date: 5 Feb 1996 13:47:33 -0800 Organization: Computer Science, University of B.C., Vancouver, B.C., Canada Lines: 44 Message-ID: <4f5ttl$eo2@ice.cs.ubc.ca> NNTP-Posting-Host: ice.cs.ubc.ca [My apologies if you've seen this twice] Greetings all, I hope somebody can be of assistance... I'm running FreeBSD 2.1 on a Pentium (ASUS P55TP4XE motherboard). I have a US Robotics Sportster 28.8 internal modem. I've been successful getting user level PPP, slip, and kernel PPP working on this machine. However, all of them experience the following problem. After some (variable) amount of time happily connected, the modem appears to wedge itself into an unresponsive state. No packets can come in, and none go out. User level PPP still believes the connection to be up (the ppp program prompt is 'PPP ON' and the logfile does not show the connection as being closed or shutdown). The modem is now in a rather sorry state -- if I quit PPP (or once PPP realizes the connection is down) I am unable to talk to the modem. The modem is unresponsive to ppp in 'term' mode, and neither cu nor kermit can get any response from it (though both can connect to the serial device). The longest I've ever been able to stay connected has been about 30 minutes, though it can die much sooner that. Programs that seem to speed the modem's demise include ftp and Netscape. There have been occasions where things will be fine, though such connections are typically shorter in duration. A tcpdump running at the time of failure shows nothing strange. I've tried both COM2 and COM3 with their associated irqs but the problem persists. I did put the modem into a box running Windows95 (random Triton Pentium) and I managed to run ppp without any problems (though I admit it is possible that it would have failed after given more time). Also, I've had no problems just connecting with cu, although I don't spend too much time connected in that way, so again the lack of failure may simply be because I haven't been connected for long enough. Does anyone have any ideas as to what the problem could be, or of other diagnostic tests I should run? Thanks, --- Dave ------------------------------------------------------------- David Finkelstein | Department of Computer Science davef@cs.ubc.ca | University of British Columbia (604) 822-8756 | 2366 Main Mall Vancouver B.C. V6T 1Z4