From owner-freebsd-current@FreeBSD.ORG Sat Sep 19 03:40:31 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6BDE8106566C for ; Sat, 19 Sep 2009 03:40:31 +0000 (UTC) (envelope-from gcr+freebsd-current@tharned.org) Received: from roadkill.tharned.org (roadkill.tharned.org [75.145.12.185]) by mx1.freebsd.org (Postfix) with ESMTP id 33D0D8FC13 for ; Sat, 19 Sep 2009 03:40:30 +0000 (UTC) Received: from blue.tharned.org (blue.tharned.org [10.10.10.8]) (authenticated bits=0) by roadkill.tharned.org (8.14.3/8.14.3) with ESMTP id n8J3eTgI035153 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 18 Sep 2009 22:40:30 -0500 (CDT) (envelope-from gcr+freebsd-current@tharned.org) Date: Fri, 18 Sep 2009 22:40:28 -0500 (CDT) From: Greg Rivers To: freebsd-current@freebsd.org Message-ID: User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.3 (roadkill.tharned.org [75.145.12.185]); Fri, 18 Sep 2009 22:40:30 -0500 (CDT) Subject: USB-to-serial adapter no longer working in 8.0-RC1 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 Sep 2009 03:40:31 -0000 Last May, Hans Petter Selasky fixed up the umct driver for 8.0-CURRENT (http://lists.freebsd.org/pipermail/freebsd-current/2009-May/007125.html). After updating to 8.0-RC1 I find that the driver has a new problem. Testing with cu(1) and a modem, I can see by watching the lights on the modem and on the usb-serial adapter that it still asserts DTR and sends and receives characters properly, but no characters reach the terminal. That seems to be the only problem: characters from the attached serial device seem to disappear before reaching whatever program has the serial device open. But strangely enough, power cycling the modem results in a few "line noise" characters appearing. Perhaps the driver is no longer responding appropriately to DSR? Any insight or troubleshooting clues would be much appreciated. -- Greg Rivers