[Rxtx] dynamic usb updates

[Dr. Douglas Lyon]

Hi All,
You know, dynamic USB updates seem like a good idea, to me.
On the other hand, to add a PortIO USB to serial converter,
I had to:
1. Download the latest driver,
2. Install the hardware,
3. Install the driver and
4. Reboot the system (this is part of the installer).

Considering that USB should be hot pluggable, I am not
sure why rebooting is required. What is going on here?

Rebooting a UNIX system, for a USB addition, is typically rare, right?

Does the specification on the Comm API have to change in order
to accommodate the dynamic USB update?

Thanks!
  - Doug

>AH!  great.
>So my mental model was reasonable, but ahead of its time.
>Now how do I adjust my mental image? Does rebooting the machine
>change anything? How do I get to those new ports?!
>sj
>
>On 2006 Sep 11, at 7:00 PM, Trent Jarvi wrote:
>
>>
>>  Hi Stephen
>>
>>  The CommAPI 'specification' was written before ports could vanish and
>>  appear.  There isn't a means of catching 'hotplug' events yet.  For 
>>  all
>>  practical purposes, the hardware should not change while using CommAPI
>>  2.0.  This shortfall has been discussed as a possible addition to 
>>  future
>>  'standards' which rxtx will support.  For now, you have to adjust your
>>  mental image :)
>>
>>  On Mon, 11 Sep 2006, Dr. Stephen Judd wrote:
>>
>>>  Many thanks to Dr. Lyon, Joachim Buechse, and Bob Jacobsen.
>>>
>>>  Building on what I have learned from this group, my mental model has
>>>  arrived at the point where I believe that the mere plugging in of 
>>>  a port
>>>  expander (like the DUAL PORT USB to Serial RS-232 DB-9 Adapter Cable)
>>>  will automagically change the list of ports available to
>>>  CommPortIdentifier.getPortIdentifiers().
>>>
>>>  Experiments say this is not true however. Using same SerialDemo as
>>>  described below, the list does not change, even after plugging a 
>>>  live device
>>>  into one of the resulting RS-232 ports, and restarting the app.
>>>
>>>  What's broken now? my hardware? or still my head?
>>>  sj
>>>
>>>  On 2006 Sep 7, at 8:40 AM, Dr. Douglas Lyon wrote:
>
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