Dave,
I have had my woes with USB in the past. Someone else mentioned that some
devices must run off a direct port from the computer which is true.
If a device has it's own power source - such as printer or scanner - they
should run from the hub just fine. If they are powered by the hub's power,
it could get a bit trickier.. The optical mouse should be able to operate on
any of the hub's ports, but the handspring cradle will need to either be
directly connected to the computer's USB port or if this is not possible,
connect it to the port on the Hub closest to the connector that goes to the
computer. Put USB items with their own power source in the port furthest
away from where it connects to the computer.
Also, (I learned this the hard way) USB tends to create a lot of what I call
Ghost Ports. If you have done a lot of connecting and disconnecting,
chances are you will have them.You WILL NOT see them in Device Manager if
you are running your computer in normal mode. Disconnect EVERTHING USB.
Reboot the computer into SAFE mode. Now go into the device manager and look
at what is there for USB. My guess is there are multiple entries for the
same item. Remove EVERTHING that is USB, including the hub, root ports,
everything. When you are done, it should look as though you do not have
anything USB connected to the computer.
Now reboot into normal mode. Windows should find your root USB connection.
After the computer is finished installing this and finished the boot
process, now you can add your USB items one by one. You should have 2 ports
coming of your computer directly (most computers do). run your PDA device
from one of the ports directly off the computer. Use the other for the hub.
Run your optical mouse from the hub in the port nearest the computer
connection. Since your scanner probably has it's own power supply, it can be
run off the hub in any of the ports.
Hope this helps,
Fran
----- Original Message -----
From: "Dave Ralph" <[log in to unmask]>
Sent: Thursday, November 29, 2001 4:28 PM
Subject: Choked by USB Optical mouse, USB hub and PDA cradle
> I tried to add some USB items to a previously perfectly functioning Win
> 98SE, AMD K-6 2 333MHz, Shuttle Spacewalker HOT-591P system with the
result
> that the system slowed down to a crawl and the added items did not
function
> properly.
>
> Prior to adding a Logitech corded optical mouse with USB plug, Handspring
> Visor USB docking cradle, and a Belkin mini four port USB self powered
hub,
> the system functioned just fine. The previous mouse was an old serial
> mouse, which predates the system, and the only USB item was a recently
> added Memorex scanner which was functioning all right. The system also
has
> in it a cable modem connected to 3Com ISA NIC card, an internal software
> telephone modem, a CD-ROM reader, an internal HP CD burner, a sound card,
> and an HP home laser on the parallel port.
>
> After plugging in the AC powered USB hub, with the PDA cradle and the
> optical mouse attached, the optical mouse appeared to function alright at
> first. However, after a period of use, a period that could vary from five
> minutes to the better part of an hour, the light on the Logitech mouse
went
> out and there was no response from it in terms of cursor movement. No
> error messages upon the dysfunction. Control panel said the device was
> working just fine even after it stopped functioning. This was true
whether
> the serial mouse was still connected or not. I also tried the mouse with
> the hub removed and the scanner removed -- same result, a locked, no light
> optical mouse. So, today I brought the mouse into work and hooked it up
to
> the PS-2 port of my compter at the office. No problem. At this time, I
> have no PS-2 port on the home motherboard; the board can take one without
> using a slot, and I have ordered the part today.
>
> The Handspring USB docking cradle would not sync with the computer. I
> tried uninstalling and them reinstalling the software, but still no
> go. So, I brought the cradle to work today, swapped it with a cradle
here,
> and it worked like a charm.
>
> So, the issue does not seem to be one of the added hardware itself being
> defective. The home and office systems both use Windows 98 SE, both with
> most of the "critcal updates" and service packs available online from
> MS. Only one time has there an error message on one of the many
> reboots. The message stated that there were no available stack tables
(?),
> that four were allocated, and that win.ini possibly should be updated to
> allow for more. A text search of the win.ini file did not reveal a stack
> table line or setting to my tired eye. The contracted term is used in
many
> files when they are searched for text with the MS Windows search facility.
>
> I am rather new to USB problems. Any thoughts on why the system slowed to
> a crawl and how to get the system to properly recognize the mouse and
> docking cradle? I expect to have a PS-2 port to plug into the motherboard
> to take the mouse out of the equation, but the port and slowing of the
> system are issues I obviously would like to eliminate.
>
> Thank you for your input. Dave Ralph
>
> David E. Ralph
> Chemung County Neighborhood Legal Services, Inc.
> 215 E. Church St., Ste 301
> Elmira, NY 14901
> VOX 607-734-1647
> FAX 607-734-1018
> <mailto:[log in to unmask]>
>
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