From owner-freebsd-mobile@FreeBSD.ORG Tue Feb 6 03:35:40 2007 Return-Path: X-Original-To: freebsd-mobile@freebsd.org Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id AF3E016A401 for ; Tue, 6 Feb 2007 03:35:40 +0000 (UTC) (envelope-from lists@jnielsen.net) Received: from ns1.jnielsen.net (ns1.jnielsen.net [69.55.238.237]) by mx1.freebsd.org (Postfix) with ESMTP id 934FA13C441 for ; Tue, 6 Feb 2007 03:35:40 +0000 (UTC) (envelope-from lists@jnielsen.net) Received: from insp.local (jn@c-76-23-109-98.hsd1.sc.comcast.net [76.23.109.98]) (authenticated bits=0) by ns1.jnielsen.net (8.12.9p2/8.12.9) with ESMTP id l163ZaAE066258; Mon, 5 Feb 2007 22:35:36 -0500 (EST) (envelope-from lists@jnielsen.net) From: John Nielsen To: freebsd-mobile@freebsd.org Date: Mon, 5 Feb 2007 22:35:24 -0500 User-Agent: KMail/1.9.5 References: <45C7B643.2030904@vwsoft.com> In-Reply-To: <45C7B643.2030904@vwsoft.com> X-Face: #X5#Y*q>F:]zT!DegL3z5Xo'^MN[$8k\[4^3rN~wm=s=Uw(sW}R?3b^*f1Wu*.<=?utf-8?q?of=5F4NrS=0A=09P*M/9CpxDo!D6?=)IY1w<9B1jB; tBQf[RU-R<,I)e"$q7N7 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200702052235.24916.lists@jnielsen.net> X-Virus-Scanned: ClamAV version 0.88.4, clamav-milter version 0.88.4 on ns1.jnielsen.net X-Virus-Status: Clean Cc: Volker Subject: Re: Verizon V620 wireless card X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Feb 2007 03:35:40 -0000 On Monday 05 February 2007 17:57, Volker wrote: > > ucom0: Novatel Wireless Inc. Novatel Wireless Merlin CDMA, rev > > 1.10/0.00, addr 2 > > ucom0: ubsa_request: STALLED > > ucom0: ubsa_request: STALLED > > ... > > (lots more STALLED messages) > > John, > > just added myself to mobile@ (thanks for cross-posting this to usb@ > so I got notice of this discussion). > > If you're using the V620 (or any other (W-)CDMA) card with ppp, you > should make sure you're using: > > set cd 30! (note the exclamation mark at the end) > > I've seen _a lot_ of problem reports (not just with FreeBSD) where > ppp does not recognize a connection loss when using W-CDMA cards. > The exclamation mark forces ppp into waiting for a carrier and > following that CD signal. I'll play around with that, thanks. > I suspect your problems might come from a bad signal. I don't know > much about the V620 (just that it's only used in nothern america) > but if it's a high-speed card (transfer rate > 56k, 3G mode?) you > should force your card into GPRS or 3G mode. I'll experiment with that too. One thing I'm not sure I mentioned in my first post is that the STALLED messages only show up when the device is opened and closed. If I use ppp in manual mode I get about six of them when I first start ppp but none while I issue any AT commands or while the link is active. Then I get about six more when I close the link. It is a (relatively) high-speed card. Under Windows all the fancy third-party software does is create a regular dial-up networking link with a serial speed of 230400. Doing the same with ppp under FreeBSD gets me a usable connection. Under either OS the latency is pretty high (~300ms) and a few packets get dropped here and there, but it beats straight dial-up (or heaven forbid, no connection at all!) > By default W-CDMA cards are trying to auto detect the best signal > reception and that might cause often signal loss due to band change. > > If you know how to force the card into one or the other mode, please > use that in ppp's init string. If you don't know it, you may try the > commands for the U630 (I guess both cards are using the same command > set). You may find a bit info about the U630 at: > http://bsd.vwsoft.com/3g/merlin_u630.html Thanks for the link. More documentation is almost always better. :) > Please note the U630 is serial-over-PCMCIA and not usb so the > hardware is not the same. I thought the V620 is also > serial-over-PCMCIA but it seems you proved me wrong. ;) I was a little surprised when I first plugged it in under Windows and a USB hub popped up. But hey, I didn't design the card or even choose to buy it (it's part of the lucky ball-and-chain package I get from work when I'm on call). Thanks for your response. JN