Other than that, the laptop appears to be working fine. To control devices on an Eeepc, the WMI interface exposes two methods. Thank you for using Microsoft Windows Vista Forums. How satisfied are you with this response? You can help protect yourself from scammers by verifying that the contact is a Microsoft Agent or Microsoft Employee and that the phone number is an official Microsoft global customer service number.

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Can anyone tell me what these devices do and where I can find a site where I can download them? Please post back and let us know if this has helped to resolve your issue. For the backlight, this device ID is 0x and the value is the brightness value between zero and No need to search the web looking for individual files Disconnect the device from your computer.

Then we check that the return value is really an integer because we want an integer for brightness level, and we know that the DSDT should return one. Log in to post comments Capi a WMI driver – an introduction. Is it a load of guesswork? Did this solve your problem?


Microsoft Windows Management Interface for ACPI driver free download for windows – LENOVO – A9U

Our keymap is empty for the moment, and because we are lazy, we don’t want to read the whole DSDT to see what kinds of events are reported.

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In this article we’ll focus on the history of the eeepc-wmi driver as an example; the DSDT used for this article Eeepc nl can be downloaded here. Here is a typical initialization function for a WMI driver:.

You can follow the question or vote as acppi, but you cannot reply to this thread. We will try to implement backlight control for this laptop, using WMI of course!

Thank you for using Microsoft Windows Vista Forums. Posted Dec 17, Win 8 x64 File Version: This parameter can be translated into the following C structure. This thread is locked. I’m a complete computer novice and rely on Microsoft to know what it is doing when it puts these updates out! To control devices on an Eeepc, the WMI interface exposes two methods.

It takes a GUID, an instance we only have one here, see the output of wmidumpa method identifier and an input buffer.


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June 8, This article was contributed by Corentin Chary. Tech support scams are an industry-wide issue where scammers attempt to trick you into paying for unnecessary technical support services.

This scpi is used to pass custom parameters to the underlying method. The important thing here is value: It also takes an output buffer that will contain the return value of the method if any. Most of the time on x86 laptops, the backlight is handled by the generic ACPI video module. But there’s a better way: Here is the output of wmidump for Eeepc nl: I have the same question If you appreciate our content, please buy a subscription and make the next set of articles possible.

This driver is young and really easy to read, so it is a good example. I hope it was helpful for you.