Date: Tue, 25 Dec 2007 13:12:59 +0200 From: Andriy Gapon <avg@icyb.net.ua> To: freebsd-usb@freebsd.org Subject: Re: unnoticed disconnect Message-ID: <4770E5BB.4090100@icyb.net.ua> In-Reply-To: <4770E39E.8050402@icyb.net.ua> References: <4770E39E.8050402@icyb.net.ua>
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on 25/12/2007 13:03 Andriy Gapon said the following: > I have a strange problem - when I disconnect a certain USB card reader > its umass* and da* devices are not removed, there is complete silence in > the system log and usbdevs -vd still shows it as connected. > Restarting usbd and/or running usbd -e doesn't change anything. > If I reconnect the device there is zero reaction as well and da* devices > are unusable (any access produces several BBB ... IOERROR). > But if attach another USB device (e.g. USB flash drive) while the reader > is disconnected then the system notices that it's actually gone and > performs all the necessary disconnect actions. > > This is quite weird for me. My question if this is something most likely > caused by software or something caused by the hardware. And if the > latter - what is most likely at fault: the reader, connecting cable, > physical port, hub ? > Additional fact: it seems that I can produce the effect with ~80% on port 1 and port 2 of hub 1 and so far I couldn't reproduce it at all on port 8 of the same hub. This is after about the same number of attempts on all three ports. The only difference is that port 1 and port 2 are at the rear panel and port 8 is at the front. -- Andriy Gapon
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