DPC's

[Sparky Joe]

Deffered Procedure Calls, I have no idea what it is but it has been hogging my CPU for the last hour. I noticed my mouse moving erratically when I was trying to point at something so I opened Process Explorer and it said "DPC" is using 45% of my CPU. Anyone have any idea why this would happen? When it started I was disabling my USB Bluetooth device, which I have done before without this problem. Not sure what to do, I can't kill the process of course and can't debug it. Any help would be appreciated.

Thanks -Joe

 

[Nodsu]

DPCs happen inside drivers.

You just have to uninstall devices to see what causes it. Start with your bluetooth - the obvious suspect. Firewalls, antivirus and other things like that are next things to try. (You may have to remove AV/FW components manually from Device Manager after uninstalling). Virtual disk drives, packet sniffers, VPN software install their own drivers..

 

[Sparky Joe]

I uninstalled the Bluetooth and couple other problem programs, still with no luck. Then because my speakers weren't working since the problem started I updated my audion drivers, and presto, problem solved. Thanks for the input, I liked the bluetooth, but don't think I'll install again, software had too many bugs(widcomm).

 

[Nodsu]

You can always use the Microsoft Bluetooth stack (comes with XP SP2).. IMO it sucks even more than Widcomm's, but that may be just me

 

[Sparky Joe]

I only use the dumb thing for my phone, to pull off pictures and put on ringtones, but the Motorola software(Phone Tools 4.0) sucks too, so I guess I'll just go without.

My girlfriend's new laptop(I haven't read the manual yet) has a bluetooth button on it, but when I push it it says "no devices found" even when my phone and hers is discoverable. Is it common for newer laptops to have bluetooth built in? If so why?

 

[Nodsu]

Maybe she has a cheaper model without a BT device? They are not going to strip off buttons because of that - you may get curious and buy the bloody BT add-on anyway