>Number: 153289 >Category: kern >Synopsis: Modem Ring Signal not reliably detected >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Dec 19 02:10:09 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Tom Glinos >Release: 8.1 >Organization: U. of Toronto >Environment: FreeBSD atlas.jarnac.org 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19 02:55:53 UTC 2010 r...@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386
>Description: Modem Ring Signal not reliably detected. >How-To-Repeat: On the hardware side, create a switch that toggles DTR to RI. Also DTR to DSR. On the software side, run a program to repeatedly scan the modem status register with a TIOCMGET ioctl A toggle of DTR to DSR is always detected. A toggle of DTR to RI is less than half the time detected. Tested against two different serial hardware, similar behaviour. The same code with same/similar hardware runs perfectly under LINUX. >Fix: Unknown at present. There are plenty of work arounds like changing the harware or OS but anyone still using a modem should be seeing this problem. >Release-Note: >Audit-Trail: >Unformatted: _______________________________________________ freebsd-bugs@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
