Date: Fri, 14 Aug 2009 09:40:39 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Cc: Edwin Groothuis <edwin@mavetju.org> Subject: Re: u3g driver sometimes loses the Huawei E169 modem after upgrade to 8.0BETA2 Message-ID: <200908140940.41000.hselasky@c2i.net> In-Reply-To: <20090813213252.GG50832@mavetju.org> References: <20090813213252.GG50832@mavetju.org>
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On Thursday 13 August 2009 23:32:52 Edwin Groothuis wrote: > Hello, > > On 7.x this never happened, but on 8.x now and then (once or twice > every traintrip) the E169 modem gets lost: You see the kernel > messages that the device disappeared, /dev/cua0.0 disappears and > thus PPP stops etc. > > Please let me know what kind of tests you want me to do to determine > to root-cause and a possible fix. How much traffic is being passed when the modem stops? If the device just disappears it is a sign of a crash on the modem side, and there is not so much we can do about it. You could try: sysctl hw.usb.ehci.no_hs=1 Before plugging the device. This will limit the speed to FULL speed only. --HPS
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