Date: Thu, 2 Sep 2010 20:31:24 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Cc: remegius@comcast.net, perryh@pluto.rain.com, freebsd-questions@freebsd.org Subject: Re: Interactive Port Message-ID: <201009022031.24920.hselasky@c2i.net> In-Reply-To: <4c7e075b.8edSaF5Xw9mGHkRS%perryh@pluto.rain.com> References: <20100901000413.GA1559@bsd.remdog.net> <4c7e075b.8edSaF5Xw9mGHkRS%perryh@pluto.rain.com>
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On Wednesday 01 September 2010 09:57:15 perryh@pluto.rain.com wrote: > Rem P Roberti <remegius@comcast.net> wrote: > > Brother! Muttprint is now working fine. The problem: the printer > > was offline! Now, before you go accusing me of being a complete > > dufus, let me say that I had no way of knowing that that condition > > existed. The printer itself indicated that it was online---no > > problem. What happened is that somehow, and I'm not sure what > > caused this, the printer became disengaged from its usb port. > > I'd call it a bug in the printer that it continues to indicate > online when it has lost its connection to its host (unless it > also has a network connection, and in that case I imagine you'd > be using the network instead of USB). > > > ... The only way that I could get it talking again to usb was by > > doing a reboot. > > Now _that_ sounds like a possible bug in the USB subsystem, since > USB is supposed to be completely hot-pluggable and should not need > a reboot to get itself straightened out after a mishap. Cc-ing usb@ > list. > > One question which will surely arise is, which FreeBSD version are > you using? The USB stack was completely rewritten in 8.0. If the USB application does not close the /dev/XXX handles, it will block the enumeration of new USB devices on that bus. Also see "usbconfig -d X.Y reset" --HPS
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