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Registered Member #79
Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673
The computer had been on for hours, so it was already "warmed up"
This is how it went IIRC: 2-3min delays between resets. reboot 2-3mins like always...disable a bunch of programs...several minutes of 2-3min pulses...then steady increase until it was doing it continuously. About 10 min time. reboot (not cold reboot) 2-3min like usual for about 15min, then it completely pis-adeared for about 1.5 hrs, which allowed me to finish copying files. I never heard it again. I can't figure out what changed, it should be exactly like the "first" one.
I'm usually really good with computers, and I work systematically, but I'm stumped. I ran some a linux liveCDs, and it doesn't seem to do it at all under Ubuntu, DSL, or Dyne:bolic. That makes me think it's not a hardware problem or the HD enclosure resetting itself. I think it's XP being screwy.
Is there anywhere I can go to watch which programs are doing what with the ports? Or a program to just lock them?
Registered Member #143
Joined: Sat Feb 11 2006, 04:25PM
Location: Austin TX, NorAm, Sol III
Posts: 28
If the problem does not happen under the linux boot, then its definitely a software problem.
As Bjorn said, reinstall all related drivers. in this case that would be the chipset software for the motherboard, and from device manager the USB driver that is part of windows. if you tell it that it can search the internet when you do this it should download the latest version from Microsoft (usually the one that enables USB 2.0 to work correctly) and I believe it will start working correct after that.
Another possiblity is the drive needs an external power source. Some do, some don't, depending on the power requirements of the drive and what all you have installed in your computer that would compete for the electricity. If in doubt, the external power connection for the drive is never a bad thing (unless you get a power surge through it ;)).
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Does the machine have a Nvidia chipset? The USB controller on that chipset can be flakey. My computer at work has the NForce 4 (I think) and the USB ports would just act up randomly. One day the USB stopped working altogether, then something on the motherboard blew up and shorted out the power supply
Even if it's not the NForce thing, it still sounds like a hardware problem, like a loose connection in a USB lead somewhere. I think if one USB port throws its toys out of the pram hard enough (like shorting the 5v to ground) it can sometimes mess up the other ports. Linux may handle this differently, and contain fault conditions better.
I recently designed a USB product at work and I use USBVIEW.EXE when I'm debugging faulty units.
PS: As for the bandwidth thing, USB2.0 can push data around about 6 times faster than a good IDE hard drive can read and write it, so I don't think you'll be able to max the bandwidth indicator by transferring files.
Registered Member #79
Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673
Does the machine have a Nvidia chipset?
No, at one point the video card was a GeForce MX4000 though... Sorry card BTW, I've never had so much trouble with a video card.
Also, I still don't know what's doing it, but I figured out how to keep it from happening. If you reboot the computer with the drive installed and turned on, then go directly to copying files without doing anything else it's fine. Weird. Ah, well, it works now.
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Windows XP, USB, "plug and play" woes.
