Intel Dptf Driver

Intel dptf driver download
  1. Intel Dptf Driver Windows 10 Asus
  2. Intel Dptf Driver Windows 10 Hp
  3. Intel Dynamic Platform And Thermal Framework Dell
Intel Dptf Driver

Intel DPTF regulates the temperature of its chipsets downclocking when it reaches a certain threshold. 'some' believe intel is being too aggressive with the thermal regulation downgrading performance / underestimate the thermal resistance of their chips / believe they can manage short burst of high intensive workload without incurring permanent damage. I am also having issues with DPTF drivers. I checked with INTEL and ASUS and had no luck. They offer the drivers for 8.1 but they are not working with Win10. Further searching through the Win10 development threads showed that that initially there was a DPTF issue that would fail the install on some ATOM and Celeron processors.

Intel Dptf Driver Windows 10 Asus

  1. Free help, download links and support for driver errors and problems.
  2. This package contains the Intel Dynamic Platform and Thermal Framework driver. Intel Dynamic Platform and Thermal Framework (IDPTF) is a power and thermal management solution. It is used to resolve fan noise, overheating, and performance-related issues of the system.

Background:

Within the past week or so, I’ve noticed a number of Stop 0xCA crashes caused by two drivers in particular: dptf_acpi.sys and dptf_cpu.sys. Both of which, appear to belong to same driver package which is Intel’s Dynamic Platform Thermal Framework (dptf). Despite the DRT (driver reference table) stating that the driver is available from Intel, there doesn’t appear to be any updates and from what I understand, this driver appears to be exclusively delivered through Windows Update. The Dell website appeared to have a driver package from 2015?

One user has mentioned that the update was named Intel DPTF 8.10600.150 in their case, however, I’m not certain if this is the same for everyone. The latest update on the Windows Update Catalog appears to be from 2017?

One of my spare laptops has been offered an updated called Intel – System – 2040.100.0.1029, however, this update was for the Intel Management Engine Interface instead.
I’ve been looking at the processors of the affected machines and there doesn’t appear to be any discernible pattern, other than they all belong to the same processor family which is 0x06. This processor family includes a wide variety of different processors. If you’re able to, then please check the processor information using the !sysinfo cpuinfo command.
The main purpose of this post to provide some information on what is happening with this crash, at the moment, I’m not aware of any definitive solution other than waiting for the driver to be patched by Intel. Most users have reported that using a system restore point has managed to resolve the issue for them.

As we can see from the bugcheck description and first parameter, a driver has failed to maintain a legal value within the combined APC disable field for the associated thread. We’re discuss this a little later on, but I would recommend reading about APCs before continuing with this post. They’re quite a lengthy topic and therefore I won’t discuss them here.

Firstly, let’s dump the driver object.

Looks like the issue is with the Intel ACPI driver. Each of the associated device and their stacks appear to be related to a slightly different thermal control device e.g. fans.

So, we know which driver is responsible, however, we don’t know what exactly how it was caused. Let’s look at the call stack for the thread.

I’ve highlighted the two most important parts of the call stack, but before we delve into those a little further, it would be best I briefly explained what PnP notifications are. Much like registry filter callbacks, the PnP Manager provides a number of different PnP events which drivers are able to subscribe to and then perform an action accordingly. For example, you may wish to listen to a particular event for debugging purposes and then log to a file each time it happens. Each PnP event belongs to a particular event category, these are stored in an enumeration called IO_NOTIFICATION_EVENT_CATEGORY.

A driver registers it’s callback routine (the function called when the event happens) by calling IoRegisterPlugPlayNotification. Once the event which the driver has subscribed to has fired, then the driver’s registered callback routine will be executed. There is a number of different rules which a notification routine must follow and this includes ensuring that the notification routine is only called at PASSIVE_LEVEL (IRQL Level 0). These rules are described here.
We can find the event and the event category by examining the second parameter passed to the PnpNotifyDriverCallback function. The callback routine takes a notification structure object which describes which event the callback is registered for.

As we can see, the notification callback routine was registered for the device interface change event category, which is responsible for checking when a device interface has been enabled or disabled. A device interface is a broad identifier for a number of different devices. For example, all of your disk storage devices would have a device interface identifier which indicated that it was a storage device.
The event in question can be found in the Event field. In this case, we were listening to an interface arrival event, which is the enabling of a new device with that particular device interface. For instance, imagine that you inserted a USB device, this would likely trigger a device interface arrival event as shown above.

We can look up the SymbolicLinkName using the !object command to reveal which device object the device interface is related to:

The device in question is related to ACPI which is then part of the device stack for the Intel Dynamic Platform Thermal Framework.


I would just like to point out, if you don’t know the type of notification structure the callback routine takes, then you can use the _PLUGPLAY_NOTIFICATION_HEADER structure first and then determine the appropriate structure from the Event field, since notification header structure is cast to the more specific structure based on that field value.

In fact, the same information can be obtained by using the !pnpevent command.

You may have noticed that the event category is a slightly different value, this is because the _PLUGPLAY_EVENT_BLOCK structure uses the the _PLUGPLAY_EVENT_CATEGORY enumeration instead.

I mentioned earlier about the combined APC disable count and the fact that it can be obtained from the thread itself. In order to do so, you simply have to dump the CombinedApcDisable field as so:

As you can see, the field has an invalid value of 0xFFFF. This value is actually the combination of two fields: KernelApcDisable and SpecialApcDisable. Both of which are part of the _KTHREAD structure.

Intel Dptf Driver Windows 10 Hp

The CombinedApcDisable is then calculated using the following expression: Download encarta 2009 for android.

Intel Dynamic Platform And Thermal Framework Dell

As we can see, the KernelApcDisable field has a value of -1 which isn’t valid; typically this means a driver has left a critical region more times than it has entered one (if it entered one), which leads to the value of -1. This is a critical error and therefore the system crashes with the bugcheck shown. We know that the IRQL level was correct since the callback routine must be called at PASSIVE_LEVEL.
This crash seems to commonly occur during boot, whereupon the PnP Manager will be asking for which devices are currently connected to the system.
References:
Handling Device Interface Change Events – Windows drivers
Guidelines for Writing PnP Notification Callback Routines – Windows drivers
Using PnP Notification – Windows drivers