Hi there, On Sun, 23 Nov 2003, Sean E. Russell wrote:
> [snip,snip] > > > I get a string of "device not accepting ID" errors. > > > > Are you sure about that message? Have you seen > > > > http://www.linux-usb.org/FAQ.html#ts6 > > It was even more simple than that. The device wasn't powered on. > What confused me was that the device is somehow active even when it is off. Argh. > Before this, I figured there were only two possible cases: > > 1) The device is USB powered > 2) The device is not USB powered > > Now I've seen a third case: the device is obviously connecting in some way to > the bus while it is off, although it doesn't work properly, but if you power > it on, it works fine. If that doesn't violate the specifications, then the specifications are daft. > What am I seeing? Is this behavior "allowed", and I just haven't seen it I don't believe it should be allowed exactly as you describe it, but with a specification as complex as USB I'd be very surprised if anyone could write a document which predicts all possible ways to foul up. Of course it may just be that there's some kind of status information available in your device (but which isn't being interrogated by the software) which would tell you not to try to operate the device just yet because there isn't enough power. That could fall into the 'bugs' category. But it sounds to me like the device itself is the buggy one. Either way it's another one for my collection. 73, Ged. ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
