Date: Tue, 26 Apr 2011 08:56:34 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: Mike Tancsa <mike@sentex.net> Cc: freebsd-usb@freebsd.org Subject: Re: ucom modem issue on recent RELENG_8 Message-ID: <201104260856.34362.hselasky@c2i.net> In-Reply-To: <4DB622D3.2000000@sentex.net> References: <4DB622D3.2000000@sentex.net>
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On Tuesday 26 April 2011 03:41:39 Mike Tancsa wrote: > Hi, > I have run into a problem where ucom no longer works with a recent kernel > from this past week on RELENG_8. I tried the same setup with RELENG_8 from > Feb 14th and it works as expected. I am about to start narrowing it down > but was wondering if any one had any hints as to what to try ? The > symptoms are that large packets fail. There has been some EHCI patches in 8-stable recently. Else there hasn't been many changes at all with regard to USB. > > e.g. on a dial connection, if I do > ping -s 900 <remote ip> > it works, although its quite slow with higher than normal latency. > if I increase the packet size to 1000, packets fail, or they take upwards > of 8 seconds to traverse the link if they ever get through. Using an > external modem on the serial port works just fine, so it seems related to > just usb ucom devices. (I havent tried u3g yet) > > The kernel from Feb 14th works as expected. From April 18th, it does not. > > This is on an alix board > --HPS
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