Topic: USB & IRQ Conflicts
Date: 19th Sept-2005
Sorry - for taking so long for reply -
Is this IRQ assignments from your [BOOT UP] or is from WINDOWS [HARDWARE RESOURCES] folder in ADMINISTRATIVE TOOLS?
IRQ-5 is a very busy Video Audio Wireless PCI device + 3 USB [HOST CONTROLLER INTERFACINGS] on it & maybe it had your camera on it
There is a way to change the IRQ Assignments BUT [It is dangerous to do] Too much room for error Can cause Register Error I would not nor do I want to try to lead you thru that procedure but there may be a way to sneak (I think) around the Resources Controlled by [AUTO(ESCD)] EXTENDED SYSTEM CONFIGURATION DATA The Automatic Resource Assignments -
________________________________________________________________________________
[NOTES ON YOUR LAST POST] just my observances -
Now you only listed 2 Types of USB [HOST CONTROLLER INTERFACE] in your last POST
1- USB [UNIVERSAL HOST CONTROLLER INTERFACE] which is a USB 1X Software managing Controller
2- USB [ENHANCED HOST CONTROLLER INTERFACE] which is USB 2.0 Controller
You did not include the 3rd Type [HCI] in your last POST
The Hardware Managing 1X USB [OPEN HOST CONTROLLER INTERFACE] Controller
Some of your earlier USB 1X devices may have DRIVERS that are supported by this USB Controller so that may be source of some USB problems
You probably have this USB Controller but did not list it because it was assigned to a NON-CONFLICTING IRQ ASSIGNMENT and because it is a common Controller for the VIA Chipset
_____________________________________________________________________________________
Here is an OUTLINE to Enhance USB Read it over - & hope STAFF & OTHERS critique and enhance method with comments & suggestions
My scheme 1st is to outwit the AUTO Resource Assignments is to free up some Resources & then Uninstall & Reinstall the PnP PCI Devices in a LOGICAL CONTROLLED MANNER So that we can have some influence on IRQ Assignments - Usually you install as you obtain new devices You may have to FREE UP an IRQ just before the Reinstallation Instead of ALL AT ONE TIME so as to have better guide influence on the selection process Then 2nd is to ENHANCE USB you should purchase a GOOD USB 2.0 NON (ALI VIA SIS USB HOST CONTROLLER INTERFACE) PCI CARD You can obtain such a card that has 4 REAR USB PORTS & 1 INTERNAL USB PORT that can have an internal cable reaching to front of case for USB 2.0 HUB that is [Known Compatible to CARD] in Front BAY SLOT This will give back 6 USB PORTS
The problem with USB is that The USB STANDARDS did not include/define THE USB HOST CONTROLLER INTERFACE It was left up to the PC Manufacturers And USB Demand/popularity outgrew the PC Manufacturers USB INTEGRATION Knowledge [NOT USB Technology]
______________________________________________________________________________
Here are the 8 General Steps: - Read over & discuss It requires a little work on your PC but I do not think it has anything that you have not done already it just gives more definition and a purpose -
1 - Get rid of all VIA USB [HOST CONTROLLER INTERFACE]
2 - Then free up some IRQ Resources Maybe just 1 at time
3 - Then clear IRQ-5 of all conflicting devices & leave [VIDEO] assigned to IRQ-5 (AGAIN 1 at a time)
4 - Then Reinstall [AUDIO] [WIRELESS PCI] (1 at a time) and Hope they get assigned to [NEWLY FREED] IRQ
5 - Then purchase a USB 2.0 PCI CARD that does not have (Ali VIA SiS) USB [HOST CONTROLLER INTERFACING]
6 - Install (NEW) USB 2.0 PCI CARD With NON (Ali VIA SiS) USB HOST CONTROLLERS
7 - Install NON Ali VIA SiS USB [HOST CONTROLLER INTERFACE]
8 - Install USB DEVICES using [NEW USB PORTS] on NEW USB 2.0 PCI CARD
Make a BACKUP and make sure you have a RECOVERY POINT to recover from - I tried not to play with VIDEO By removing all other applications on IRQ-5 & leaving VIDEO there Only do 1 removal at a time & 1 reinstallation at a time & establish a new Recovery Point at each operation The only IRQ conflict I did not address was IRQ-11 Removing USB Controllers should take care of it However when installing NEW USB Controllers It may surface again
I have given 2 Main Steps/Suggestions
1 Eliminate IRQ conflict
2 Install new USB CARD
You can decide to do (1) Only and then reinstall the Internal VIA USB Host Controllers OR Do (2) Only after removing Internal VIA USB Controllers 1st
Just keep in mind that what ever new USB Devices that you obtain in future do research before purchasing that they are TESTED for known compatibility with whatever USB HOST CONTROLLER INTERFACE that you have installed in PC
Here is 1st Option with a little more detail
1st Remove all USB devices Because you probably have Installed & Reinstalled USB devices your PC probably has [Hidden USB] Drivers for Host Controller Interfacing & Devices You need to use [SAFE MODE] and [UNINSTALL HARDWARE] using [CONTROL PANEL] This (AGAIN I THINK) MIGHT reveal all instances of USB Drivers on PC (Including hidden???)
2nd Now do what Tyger suggested You can disable your serial and printer ports in Device Manager to free up some IRQs This would free up IRQ3 & IRQ4 and IRQ7
3rd Try to clear IRQ-5 by Uninstalling the [AUDIO] devices on IRQ-5 using [CONTROL PANEL]
4th Reinstall [AUDIO] Device Hope that it is assigned to IRQ3 -
5th Uninstall Wireless PCI that is assigned to IRQ-5 thru [CONTROL PANEL] (If step 4 was successful) This should leave [VIDEO] Device solely assigned to IRQ-5
6th Reinstall Wireless PCI Device Hope that it is assigned to IRQ-4
2nd Option with more detail
Here is a good USB Link List good USB Cards
http://www.usbman.co...2 pci cards.htmSelect Card & Install -
You probably can learn more USB info here This site probably has FORGOTTEN more than I will ever know about USB -
Jack123
Edited by Jack123, 19 September 2005 - 01:58 PM.