USB-hub

[Charlie42]

Does anybody know the two port USB hub from Mobile Computing?

I've had two BSOD's which I think may have been caused by this hub, but I'm
not entirely sure.

Are there any Vista drivers I can download for it? It's currently recognized
as 'generic USB hub', and uses the usbhub.sys driver.

Charlie42

 

[PvdG42]

Does anybody know the two port USB hub from Mobile Computing?

I've had two BSOD's which I think may have been caused by this hub, but
I'm not entirely sure.

Are there any Vista drivers I can download for it? It's currently
recognized as 'generic USB hub', and uses the usbhub.sys driver.

Charlie42

If there are any specific drivers (doubtful), they would be available from
the manufacturer. As a quick Google doesn't pop up a company with that name,
you'll have to use the full/actual name for your search.

 

[Charlie42]

If there are any specific drivers (doubtful), they would be available from
the manufacturer. As a quick Google doesn't pop up a company with that
name, you'll have to use the full/actual name for your search.

I've tried that, without any results. But thanx for replying anyway.

Charlie42

 

[Mark Bourne]

Does anybody know the two port USB hub from Mobile Computing?

I've had two BSOD's which I think may have been caused by this hub, but
I'm not entirely sure.

Are there any Vista drivers I can download for it? It's currently
recognized as 'generic USB hub', and uses the usbhub.sys driver.

Charlie42

Most hubs will use the "Generic USB Hub" driver, since they rarely have
extra features which would require a more specific driver. What makes
you think it is the hub causing the problem? Could it be one of the
devices connected to the hub? Or possibly a conflict between two of the
devices, which can only be plugged in at the same time when you are
using the hub?

If the BSODs only happen occasionally, after an unpredictable time
(which is often the case!), it can be difficult to work out what is
causing the problem. If you're lucky and they do happen fairly regularly
(eg. almost certain to happen within half an hour), you could try
plugging in the hub and nothing else, work (or wait) an hour (twice the
time you'd expect to get a BSOD) and see if you get one, then plug in
one device, wait an hour, plug in another, etc. When you do get a BSOD,
try the last device you plugged in on its own, then that device in
combination with each of the other devices. It might take a while, but
would help track down which device, or combination of devices, causes
the problem. If there's a long unpredictable time between BSODs, it may
not be practical to do this, though.

 

[Charlie42]

you think it is the hub causing the problem? Could it be one of the
devices connected to the hub? Or possibly a conflict between two of the
devices, which can only be plugged in at the same time when you are using
the hub?

Possibly a conflict between the hub and an optical mouse (A4 Tech).

This error happens when I restart Vista from sleep. The hub and mouse are
constantly connected. Some time after restarting, the mouse stops working
(won't reconnect either), and the computer crashes within 30 minutes. But I
have had restarts from sleep where this hasn't happened, that's why I'm not
100% sure what causes the BSOD's.

(eg. almost certain to happen within half an hour), you could try plugging
in the hub and nothing else, work (or wait) an hour (twice the time you'd
expect to get a BSOD) and see if you get one, then plug in one device,
wait an hour, plug in another, etc.

I will give this a try. Thanks for your advice.

Charlie42

 

[Charlie42]

news:[email protected]...

I will give this a try. Thanks for your advice.

Charlie42

I did the testing, and it turned out it wasn't a conflict with the mouse
after all. It was the hub itself who stalled. Guess I just have to remember
to plug it out before I put Vista to sleep from now on. Thanks for your
help, Mark.

Charlie42

 

[Mark Bourne]

I did the testing, and it turned out it wasn't a conflict with the mouse
after all. It was the hub itself who stalled. Guess I just have to
remember to plug it out before I put Vista to sleep from now on. Thanks
for your help, Mark.

Charlie42

No problem. And thanks posting back to say you found the problem.

When the hub doesn't come back on properly after waking from sleep, you
could try unplugging the hub from the computer and plugging it back in
again. If the hub has a separate power supply, also turn that off and
back on while the hub is unplugged, to ensure the hub is reset. That
might avoid the blue screen half an hour later.

I've noticed that my hub (D-Link DUB-H7 7 port hub) sometimes doesn't
come back on properly after waking the laptop, and resetting the hub
sorts it. I've not noticed it causing a BSOD, but maybe it would later
if I didn't reset it.

Mark.

 

[Charlie42]

When the hub doesn't come back on properly after waking from sleep, you
could try unplugging the hub from the computer and plugging it back in
again. If the hub has a separate power supply, also turn that off and back
on while the hub is unplugged, to ensure the hub is reset. That might
avoid the blue screen half an hour later.

In the case of the Mobile Computing hub, it doesn't help. When it's dead,
it's dead. Unplugging/plugging it is useless, it won't reconnect.

Charlie42

 

[Mark Bourne]

In the case of the Mobile Computing hub, it doesn't help. When it's
dead, it's dead. Unplugging/plugging it is useless, it won't reconnect.

Charlie42

That's probably not the same problem as I occasionally have then.
Getting a new hub might help, possibly a different make or model in case
there's a general problem with your current model working with Vista.
You might want to borrow one to try before buying one though, in case it
doesn't solve the problem.

Mark.

 

[Wandering]

There is an option in the Power Profile advanced settings to allow or
disallow selective power down for usb devices. I think the default is not to
allow it, but you might check. Hubs are tricky and mostly for low priority
devices or temporary gadgets like flash drives or head phones. A better
solution is a PCI card with USB outlets on it. They are quite cheap, and
avoid the hub problems.

Good luck