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Chapter 17. Getting the Most Out of Devi... > Troubleshooting Resource Conflicts

Troubleshooting Resource Conflicts

On modern computer systems that support the Advanced Configuration and Power Interface (ACPI), use PCI cards, and external Plug and Play–compliant devices, resource conflicts have become almost nonexistent. That’s because the ACPI is capable of managing the system’s resources to avoid conflicts. For example, if a system doesn’t have enough IRQ lines, ACPI will assign two or more devices to the same IRQ line and manage the devices so that they can share the line without conflicting with each other. (To see which devices share an IRQ line, activate Device Manager’s View, Resources by Connection command, and then double-click the Interrupt Request (IRQ) item.)

ACPI’s success at allocating and managing resources is such that Windows Vista doesn’t allow you to change a device’s resources, even if you’d want to do such a thing. If you open a device’s properties sheet and display the Resources tab, you’ll see that none of the settings can be changed.


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