This update (KB3009676) contains all the fixes for KB3008242. If you install KB3008242 and then install this update, you will see the version number of PDC.sys drop on your system. The drop in the version number of PDC.sys should not cause alarm. 

Symptoms

Consider the following scenario:

  • You have a device that is running Windows 8.1 and that has a Secure Digital Input Output (SDIO) Wi-Fi driver installed.

  • The device has updates 2919355 and 2883200 installed.

  • You restart the device (warm boot).

  • You put the device in idle for about one minute.

  • You perform one of the following steps:

    • Put the device in hibernation, and then resume the device.

    • Enter Connected Standby, and then resume the device.

    • Disable and then re-enable Wi-Fi.

In this scenario, the clock frequency of the SD bus decreases to about half of the usual rate. This may decrease performance on a Wi-Fi network connection.

Resolution

To resolve this issue, we have released an update rollup and a hotfix for Windows 8.1.

The update rollup fixes many other issues in addition to the issue that the hotfix fixes. We recommend that you use the update rollup. The update rollup is larger than the hotfix. Therefore, the update rollup takes longer to download.

Get the update rollup for Windows 8.1To resolve this issue, install the update rollup that is dated December 2014.

Get the December 2014 update rollup for Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2

Get the hotfix for Windows 8.1A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Update detail information

PrerequisitesThere are no prerequisites for installing this hotfix.

Registry informationTo use the hotfix in this package, you do not have to make any changes to the registry.

Hotfix replacement informationThis hotfix does not replace a previously released hotfix.

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 file information notesImportant Windows 8.1 hotfixes and Windows Server 2012 R2 hotfixes are included in the same packages. However, only "Windows 8.1" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8.1" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.17xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Intelpep.sys

6.3.9600.17254

36,160

17-Oct-2014

03:15

x86

Pdc-mw.ptxml

Not applicable

4,498

21-Aug-2013

23:40

Not applicable

Pdc.sys

6.3.9600.17254

76,096

17-Oct-2014

03:01

x86

Dumpsd.sys

6.3.9600.17255

131,392

17-Oct-2014

03:15

x86

Sdbus.sys

6.3.9600.17255

199,488

17-Oct-2014

03:15

x86

For all supported x64-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Intelpep.sys

6.3.9600.17254

39,744

17-Oct-2014

04:56

x64

Pdc-mw.ptxml

Not applicable

4,498

22-Aug-2013

06:45

Not applicable

Pdc.sys

6.3.9600.17254

86,336

17-Oct-2014

03:35

x64

Dumpsd.sys

6.3.9600.17255

153,920

17-Oct-2014

04:56

x64

Sdbus.sys

6.3.9600.17255

238,912

17-Oct-2014

04:56

x64

Additional file information

Additional files for all supported x86-based versions of Windows 8.1

File name

X86_294fd390463803f72001782a54a56aca_31bf3856ad364e35_6.3.9600.17463_none_9d5db04e9e647c09.manifest

File version

Not applicable

File size

691

Date (UTC)

17-Oct-2014

Time (UTC)

20:11

File name

X86_intelpep.inf_31bf3856ad364e35_6.3.9600.17463_none_595905dc44a2479b.manifest

File version

Not applicable

File size

2,110

Date (UTC)

17-Oct-2014

Time (UTC)

03:21

File name

X86_microsoft-windows-pdc_31bf3856ad364e35_6.3.9600.17463_none_3be73f3177be80fe.manifest

File version

Not applicable

File size

88,628

Date (UTC)

17-Oct-2014

Time (UTC)

03:09

File name

X86_sdbus.inf_31bf3856ad364e35_6.3.9600.17463_none_06970bf6e5e16ca7.manifest

File version

Not applicable

File size

2,725

Date (UTC)

17-Oct-2014

Time (UTC)

03:21

Additional files for all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File name

Amd64_0100040eb56bcc98cf4b86ca3099ec23_31bf3856ad364e35_6.3.9600.17463_none_b8417bd7882f9b8b.manifest

File version

Not applicable

File size

695

Date (UTC)

17-Oct-2014

Time (UTC)

20:14

File name

Amd64_intelpep.inf_31bf3856ad364e35_6.3.9600.17463_none_b577a15ffcffb8d1.manifest

File version

Not applicable

File size

2,114

Date (UTC)

17-Oct-2014

Time (UTC)

05:18

File name

Amd64_microsoft-windows-pdc_31bf3856ad364e35_6.3.9600.17463_none_9805dab5301bf234.manifest

File version

Not applicable

File size

88,632

Date (UTC)

17-Oct-2014

Time (UTC)

03:39

File name

Amd64_sdbus.inf_31bf3856ad364e35_6.3.9600.17463_none_62b5a77a9e3edddd.manifest

File version

Not applicable

File size

2,729

Date (UTC)

17-Oct-2014

Time (UTC)

05:18


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