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a_roche

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USB Devices disconnect/reconnect intermittently

I have been fighting a problem with my USB devices suddenly disconecting and reconnecting  for several weeks and it is time to call in the big guns. First my system config:

Mobo: Asus A8N33-SLI Deluxe
RAM: 2GB Corsair matched dual channel
Processor: AMD Athalon 64 X2 4400+
Audio: Via AC '97  (on board) OR Creative Audigy SB0090 (I have tried both now)
Storage: 1x WD 80GB SATA, 1x WD 250GB SATA
PSU: 650W BFG
Vid: 2x GeForce 7900GT 512MB (SLI mode)
Mouse: MS Habu
KB: Logitech G15 / Nostromo n52

IRQ 22      Standard OpenHCD USB Host Controller
IRQ 22      NVIDIA nForce4 Serial ATA Controller
IRQ 23      NVIDIA nForce4 Serial ATA Controller
IRQ 23      NVIDIA Network Bus Enumerator
IRQ 16      Silicon Image SiI 3132 SATALink Controller
IRQ 16      Creative SB Audigy
IRQ 16      NVIDIA GeForce 7600 GS
IRQ 17      NVIDIA GeForce 7600 GS
IRQ 17      OHCI Compliant IEEE 1394 Host Controller

What is happening is I will be playing or working and suddenly the mouse freezes on the screen.  I look at the mouse the lights have gone out and I hear the USB device disconnect sound.  Then the keyboard and Nostromo go dead.  then I hear the USB device connected sound and the devices come back online.  Sometimes I get an error from Windows saying that one of the devices was not recognized, but that it rare.  

It started with a problem that only showed during game play, but has now moved into a condition that is frequent in any process.  I can make it happen more frequently by loading a game, but now it happens with just doing nothing but browsing.  It has happened 3x just while assembling this post over the last 5 minutes.

I would worry about pulling my hair out on this, but I have none anymore.
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warrenbuckles

Could be related to power supply to the USB devices.

USB devices are <supposed> to draw a maximum of 500 mA from the host.  The current allocation rules are complicated and depend on the device family and interaction between the host and device.  Some host hardware and drivers are better at enforcing this than others, with current limits enforced.

If you have many USB devices (not the case from your list) it's possible to draw too much total current from the USB controller and have operational problems.

On the other hand, a device that is having an intermittent internal fault would 'dissappear' from time to time.

You could try switching the mouse and/or keyboard for other units and see if the problem follows the devices or the system.

wb
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test with a pci to usb adapter, or with a powered hub
http://www.usb-2-0.com/usb-2-0-pci-card.html
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ASKER

OK, I will see what I can find with the suggestions and hopefully they will be fruitful.
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ASKER

I purchased a powered USB 2.0 hub and moved the only 3 USB devices I have to the hub.  played Friday night with only 2 instances of the reset, but Saturday was just as bad as before.

I am tempted to reload from scratch and see if that solves anything.  What is the consensus of the experts here?  Will this solve anything or is there a probable hardware issue?

I can swap out with other mice is I have to, and possibly a different keyboard.
normally, software does not cause intermittent faults; but it is worth a try
...so i would say with the above, hardware does.
Now, a hub works still thru the old usb ports - right ?
it can be that there is the problem; maybe can be cured with a pci to usb card, which does not work thru it.
Does nobody of your friends have one?  or buy one, they're not expensive, AND give you more usb ports too
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ASKER

Unfortunately the A8N32 has only a few slots.  I will see what I can though.  It's worth trying to find the source.
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warrenbuckles

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ASKER

Sorry for the delay, the holiday season tends to take a lot of my time.  I do have both controllers listed in my System Information, I was only providing the one the one that I thought was important at the time.  Something I I know better than to do, I apologize.

Your mention of OHCD does remind me that there is a settting in the BIOS for the OHCD handoff.

I haven't changed the drivers since starting the thread since I really hate it when users make changes to the environment whilst I am trying to help them solve a problem.  I really want to solve this.

Part of the USB hub test was that I also tried plugging into the add-on USB ports I have that are plugged into the USB on the board.  I believe these two are on another USB controller, I will have to check.

I will give the reset of the ECSD bit a try tonight and see what we can find out.
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ASKER

OK, I believe I have solved this.  I couldn't do a ECSD reset, but I did look try swapping the mouse as a test.  The problem went away, but I then wanted to know why.

Since these are both Razer mice it turns out that if I set the Polling rate at 1000Hz then the USB goes nuts.  If I leave it at 125Hz it never has a problem.  I must have been pushing the USB controller too fast to connect when the CPU was busy.  either way it is fixed and I appreciate the help.  
merry X-mas then, and close this Q as you like