- RE: LATITUDE E7270 ACPI DELLABC6 driver Have you done a manual installation of Windows, or is this the Dell OEM install? If you manually installed, be sure you've installed the chipset software and rebooted the system before you load any other drivers, including the one you're looking for.
- Here you will learn how to download ACPI drivers. Download Drivers Using Hardware ID Usually, we can download drivers from manufacturer’s website by using the device name and the system version. But for ACPI, it is impossible to get the exact device name. This makes it harder to download drivers in this way.
- The Advanced Configuration and Power Interface (ACPI) specification describes a number of interfaces that are vendor specific. These include both the concept of the “Function Fixed Hardware” (FFH) interface, which was introduced in revision 2.0, as well as vendor-specific ACPI namespace object definitions.
- Title: How to install ACPI Device Driver (FUJ02B1) Issued Date 101507 Rev. 01 8, Click “Driver” 9, Click “Update Driver” 10, Click “No, not this time”.
The Windows ACPI driver, Acpi.sys, is an inbox component of the Windows operating system. The responsibilities of Acpi.sys include support for power management and Plug and Play (PnP) device enumeration. On hardware platforms that have an ACPI BIOS, the HAL causes Acpi.sys to be loaded during system startup at the base of the device tree. Acpi.sys acts as the interface between the operating system and the ACPI BIOS. Acpi.sys is transparent to the other drivers in the device tree.
If the driver you got from a disc or downloaded from a website doesn't install itself, you might need to install manually. To manually install a driver You must be signed in as an administrator to follow these steps.
Other tasks performed by Acpi.sys on a particular hardware platform might include reprogramming the resources for a COM port or enabling the USB controller for system wake-up.
In this topic
ACPI devices
The hardware platform vendor specifies a hierarchy of ACPI namespaces in the ACPI BIOS to describe the hardware topology of the platform. For more information, see ACPI Namespace Hierarchy.
For each device described in the ACPI namespace hierarchy, the Windows ACPI driver, Acpi.sys, creates either a filter device object (filter DO) or a physical device object (PDO). If the device is integrated into the system board, Acpi.sys creates a filter device object, representing an ACPI bus filter, and attaches it to the device stack immediately above the bus driver (PDO). For other devices described in the ACPI namespace but not on the system board, Acpi.sys creates the PDO. Acpi.sys provides power management and PnP features to the device stack by means of these device objects. For more information, see Device Stacks for an ACPI Device.
A device for which Acpi.sys creates a device object is called an ACPI device. The set of ACPI devices varies from one hardware platform to the next, and depends on the ACPI BIOS and the configuration of the motherboard. Note that Acpi.sys loads an ACPI bus filter only for a device that is described in the ACPI namespace and is permanently connected to the hardware platform (typically, this device is integrated into the core silicon or soldered to the system board). Not all motherboard devices have an ACPI bus filter.
All ACPI functionality is transparent to higher-level drivers. These drivers must make no assumptions about the presence or absence of an ACPI filter in any given device stack.
Acpi.sys and the ACPI BIOS support the basic functions of an ACPI device. To enhance the functionality of an ACPI device, the device vendor can supply a WDM function driver. For more information, see Operation of an ACPI Device Function Driver.
An ACPI device is specified by a definition block in the system description tables in the ACPI BIOS. A device's definition block specifies, among other things, an operation region, which is a contiguous block of device memory that is used to access device data. Only Acpi.sys modifies the data in an operation region. The device's function driver can read the data in an operation region but must not modify the data. When called, an operation region handler transfers bytes in the operation region to and from the data buffer in Acpi.sys. The combined operation of the function driver and Acpi.sys is device-specific and is defined in the ACPI BIOS by the hardware vendor. In general, the function driver and Acpi.sys access particular areas in an operation region to perform device-specific operations and retrieve information. For more information, see Supporting an Operation Region.
ACPI control methods
ACPI control methods are software objects that declare and define simple operations to query and configure ACPI devices. Control methods are stored in the ACPI BIOS and are encoded in a byte-code format called ACPI Machine Language (AML). The control methods for a device are loaded from the system firmware into the device's ACPI namespace in memory, and interpreted by the Windows ACPI driver, Acpi.sys.
To invoke a control method, the kernel-mode driver for an ACPI device initiates an IRP_MJ_DEVICE_CONTROL request, which is handled by Acpi.sys. For drivers loaded on ACPI-enumerated devices, Acpi.sys always implements the physical device object (PDO) in the driver stack. For more information, see Evaluating ACPI Control Methods.
ACPI specification
For the latest Advanced Configuration and Power Interface Specification, see the ACPI 5.0 specification available from the Unified Extensible Firmware Interface Forum website.Revision 5.0 of the ACPI specification introduces a set of features to support low-power, mobile PCs that are based on System on a Chip (SoC) integrated circuits and that implement the connected standby power model. Starting with Windows 8 and Windows 8.1, the Windows ACPI driver, Acpi.sys, supports the new features in the ACPI 5.0 specification. For more information, see Windows ACPI design guide for SoC platforms.
ACPI debugging
Acpi Driver Update
System integrators and ACPI device driver developers can use the Microsoft AMLI debugger to debug AML code. Because AML is an interpreted language, AML debugging requires special software tools. Checked versions of the Windows ACPI driver, Acpi.sys, contain a debugger component to support AML debugging. For more information about the AMLI debugger, see ACPI Debugging. For information about how to download a checked build of Windows, see Downloading a Checked Build of Windows. For information about compiling ACPI Source Language (ASL) into AML, see Microsoft ASL Compiler.
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If you use an Asus computer in your business, it might be missing the correct ACPI – Advanced Configuration and Power Interface – driver. ACPI drivers regulate power and system functions and are vital to the operation of your computer. To ensure the Asus computer works flawlessly, you must download the missing ACPI driver and install it. A reboot is required, so make sure you save your work before you install the driver.
1.Navigate your Web browser to the Download section of the official Asus Support website (see Resources).
2.Click the 'Start' button in the Select Model Manually section to start searching for your product.
3.Select the product family in the Product section.
7.Click the 'Confirm' button to navigate to the Download page.
8.Click the '+' icon in front of the ATK node to expand the node.
9.Click the 'Global' link in the ATK driver section and save the installer on your computer. If the driver is archived, extract the installer on your hard disk.
10.Double-click the 'AsusSetup.exe' file to start installing the missing Asus ACPI driver.
11.Follow the instructions on your screen to finish the installation.
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