brltty an usb-hub

[acollins at icsmail.net]

Yep, and some devices just plain say in the docs that they won't work
with a hub.  I don't know if the Voyager is one of those or not.  I
guess a temporary work around would be to plug the voyager in to a
separate usb port on the laptop from the hub, provided the laptop has
more than one port.  If not, I'm afraid he's had, until Dave or one of
the usb kernel guys can diagnose the problem.

Gene

>
>Sometimes devices don't work well when connected through a USB hub.
>Often it is an error in the usb driver or some badly handled nuonce of 
>USB funniness, it used to be the case that USB Audio devices wouldn't 
>work well through a hub.
>I'd report a bug to the brltty mob but these problems are difficult to 
>track down and harder to fix. If there is a Linux-USB mailing list that 
>might be another avenue to check out.
>
>Regards, Kerry.
>
>On 28/12/2011 3:54 PM, Dietmar Segbert wrote:
>> Hello,
>> i have triedd different hubs and i have tested the hub with power-adapter
>> under windows xp and nvda and the original optelec drivers. That works
>> well.
>> A numpad-keyboard works well on this hub.
>>
>> Thanks and regards.
>>
>> Dietmar
>>
>>> acollins at icsmail.net schrieb am 28.12.11:
>>
>>> Hello.  Have you tried a different port on the hub?  Have you tried
>>> a different hub altogether?  It's obviously a problem with the port
>>> on the hub, or the hub itself, since the voyager works fine when
>>> connected by itself.  You might check the documentation for the
>>> Voyager.  Some usb devices specificly require that you not plug
>>> them in to a hub.  In fact, I would check the docs first.
>>
>>>> Hello,
>>>> i use speakup and brltty with a optelec voyager 44 on grml linux.
>>>> If i plug in the voyager brailledisplay directly in into my
>>>> netbook, all works well.
>>>>     If i plug in the brailledisplay into a usb-hub with a extra
>>>> poweradapter, the brailledisplay works, but the keys of the
>>>> voyager wil not work.
>>>>     What can i do, so that the brailledisplay works correctly.
>>>>
>>>> Regards.
>>>>
>>>> Dietmar
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>>
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