Date: Fri, 18 Sep 2009 22:40:28 -0500 (CDT) From: Greg Rivers <gcr+freebsd-current@tharned.org> To: freebsd-current@freebsd.org Subject: USB-to-serial adapter no longer working in 8.0-RC1 Message-ID: <alpine.BSF.2.00.0909182117210.1423@blue.tharned.org>
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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
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