Date: Sat, 19 Sep 2009 15:53:11 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-current@freebsd.org Subject: Re: USB-to-serial adapter no longer working in 8.0-RC1 Message-ID: <200909191553.12645.hselasky@c2i.net> In-Reply-To: <alpine.BSF.2.00.0909182117210.1423@blue.tharned.org> References: <alpine.BSF.2.00.0909182117210.1423@blue.tharned.org>
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On Saturday 19 September 2009 05:40:28 Greg Rivers wrote: > 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. Hi, You need to provide debug output from: sysctl hw.usb.ucom.debug=15 and sysctl hw.usb.umct.debug=15 If it exists. --HPS
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