SD5.0.1.200 conflicts with NEW USB Devices?!

[eye2eye]

I was totally frustrated :mad: , when I finally figured out the reason of the problem, which recently caused Vista 32bit Ultimate freeze and no responding at all. Recently everytime I attached a new USB Device( a new USB mouse or a USB Mobile Storage Device or a Digital Camera) to my computer, when the system is trying to detect and install the device driver, the swdsvc.exe would reach almost 50%-100% CPU consumption, and, this is not the worst, Vista 32bit OS would totally freeze and no responding at all, explorer.exe will be out of respondence and so did the keyboard. But if you opened a task manager prior than you hoocked up a USB Device to your computer, you got the chance to terminate the swdsvc.exe process, and then system would keep installing the USB device's driver and everything would be just FINE! But, at this point, you need to restart SD5 to avoid a further problem.

For now, there are two ways for you to avoid this problem:
1. Disable OnGard when you are trying to hook up a new USB Device.
2. Open a task manager before you are trying to attach the device and keep an eye on the swdsvc.exe, if it spikes up the cpu usage, terminate it and after the installation, restart SD5.

Good Luck.:)

PS. If anyone or the administrator has any further suggestion or you can do a comfirm test under your Vista environment, please leave a comment in this thread.

[eye2eye]

My computer:
Core Duo T2250, 2GB DDR2, 120G SATA, Windows Vista 32bit Ultimate.

[AChen]

Hi eye2eye,

Try disabling File Guard to see if this is the causing the problem. It could be File Guard that is constantly scanning, using up the CPU. We have run multiple test with this scenario and were not able to recreate this problem and we haven't had any reports on this.

[eye2eye]

Hi eye2eye,

Try disabling File Guard to see if this is the causing the problem. It could be File Guard that is constantly scanning, using up the CPU. We have run multiple test with this scenario and were not able to recreate this problem and we haven't had any reports on this.

I've tried to disable everyone of the onGards and combinations of them and even all of them, but I had no luck to avoid this. As long as the OnGard is On, the same problem will occur.

I've tested under WindowsXP, everything is fine. But in vista, it will freeze. I don't know if it was caused by latest Vista Updates or SD5 updates. It just occured recently.:confused:

[eye2eye]

This problem happens when you attach a New usb device to the computer for the first time and during the phase when the OS is detecting and installing the driver. If you attach the device for the second time, you needn't disable OnGard at all, everything is just fine.

[AChen]

Thanks for the additonal info. We'll need to run more tests on this and if we require further info, I'll let you know.