17" Vortex IV usb Mouse stutter

[luckyluca]

I noticed a small issue with my otherwise very good vortex 4: Mouse stutter.

The mouse cursor tends to pause occasionally for about a half a second, this every 30-60 seconds or so.

This ONLY happens with the AC adapter plugged in. Also it happens on all usb ports with all usb mice I own.

The mouse stutter happens regardless of the program opened, it happens on everyday usage like using the file explorer, firefox, writing emails, writing openoffice docs.
And it also happens while playing directx games and running opengl programs (flight simulator x, sidefx houdini).

Have you bumped into anything similar? I'm in touch with pcs already, I just wanted to run it here just in case anybody bumped into it and found a fix.
I've been trying all the recent nvidia stable and beta drivers but none solved the issue.

Vortex4 laptop
Windows 7 ultimate 64bit sp1

BIOS
MB bios: 1.00.07TPCS
KBC/EC FIRM 1.00.04

 

[ubuysa]

That sounds like excessive CPU use by something. Bring up the Windows performance monitor and add counters for % Processor Time, % Idle Time, and Interrupts per second, and then leave it running whilst you do other stuff.

When you see the mouse stutter, give the performance monitor the focus and look at the graph to see what those three values were doing during the period of mouse stutter. I suspect you'll find %Idle Time is zero and %Processor Time is 100%. The Interrupts per second will give you a clue as to whether the CPU is being interrupted by an external device (hard disk, SSD, DVD, USB device, etc.) in which case the Interrupts per second will be high, or whether it's a background application chewing up CPU cycles, in which case the Interrupt rate will be average.

Based on those results you'll have to do some investigating (by a process of elimination) to discover which external device or which application is using excessive CPU and why.

 

[luckyluca]

Thanks, I hadn't thought about it, I'll keep an eye on the per mon.

However the mouse stutter seems to stop completely when on battery. It only happens when the ac adapter is plugged in.
Also I have no other devices running and it happens regardless of whether any software is running.

Considering these factors, it would feel more like a bios or mobo hardware issue to me.
i'm waiting for pcs' email reply on perhaps a newer bios available

 

[ubuysa]

Thanks, I hadn't thought about it, I'll keep an eye on the per mon.

However the mouse stutter seems to stop completely when on battery. It only happens when the ac adapter is plugged in.
Also I have no other devices running and it happens regardless of whether any software is running.

Considering these factors, it would feel more like a bios or mobo hardware issue to me.
i'm waiting for pcs' email reply on perhaps a newer bios available

I might be tempted to check the power options then. PErhaps something runs or runs differently on AC than it does on battery?