7 Replies Latest reply on Feb 4, 2011 4:27 PM by Dan_O

    S5520SC periodic momentary freezing


      We have a single S5520SC board that we've just built into a system running Windows Server 2008 R2.


      The system freezes around every ~2s for ~0.5s and then continues. The entire system appears to be affected by the freeze (screen, keyboard, mouse, network traffic), disk. We'd like to understand why.




      - The machine is running Windows Server 2008 R2 Standard Edition and is fully patched.


      - The machine has the latest Intel firmware downloaded from the Intel web site.


      - The freezing appears when running Windows, but does not seem to be manifest when running Linux from the bootable CD included in the pack. We need this machine to run Windows.


      - The fans are running, but show no signs of heat being an issue (they are running slowly and silently).


      - The cooling pane in the Intel ASC diagnostic report says "no sensors found".


      - The dual process motherboard is in an Intel UP chassis. The system has a Corsair PSU as the existing PSU did not have the requisite connectors and we were unable to source the appropriate Intel part in the UK.


      - Naive attempts to fix the problem have included re-seating the CPU with fresh thermal paste, changing the installed memory from RDIMMs to UDIMMs, moving the GPU between PCIe x16 slots.


      The sysinfo logs are attached below. We'd appreciate any pointers on resolving this issue.


      Miscellaneous issues that would improve the OOBE for this board:


      1) In the OS event logs you'll see faults from backend.exe. This is an Intel application run by sysinfo. Uninstalling and re-installing sysinfo appeared to fix this, but it'd be good if the application produced a diagnostic message rather than faulting repeatedly during a single run of sysinfo.


      2) The sysinfo utility prints a disclaimer stating that says "The file contain NO personal information", but the report includes the execution path and in the typical case this will include the user's alias. This user is 100% identifiable on the Internet by user name (replaced in attached files).


      3) The issue report form on the accompanying "Intel Deployment CD" has no directions for where to submit the form.


      MotherboardIntel S5520SC
      CaseIntel SC5650UP
      Power SupplyCorsair AX750 Modular PSU
      Disk Controller ModeAHCI
      Additional cardsATI Radeon 3650
      PROCESSORSingle X5650 @ default 2.67GHz

        • 1. Re: S5520SC periodic momentary freezing

          Here's a couple of shots from Microsoft's XPerf showing the thread scheduling whilst playing an MP3 in WMP. Note the long gaps with no scheduling. As you might imagine the audio quality is abysmal. On a functioning machine the scheduling activity on the busy CPU does not have the gaps in.


          I've not been able to correlate the gaps with anything visible in XPerf.


          If you have any suggestions, we'd welcome the help.



          • 2. Re: S5520SC periodic momentary freezing

            Further data points from the S5520SC board :-


            o Issue does not repro on a Windows 7 (x64) install.

            o Issue does repro on a second install of Windows Server 2008 R2 (different SKU).

            • 3. Re: S5520SC periodic momentary freezing

              Watching the boot process on the original Windows Server 2008R2 installation, it appears the the freezing does not start until well into the system initialization process.The attached XPerf snapshot shows the beginning of the problem - when CPU0 and the disk utilization suddenly have large periodic idle periods.


              The red dot in the process lifetimes that is 3 seconds before the problem starts appearing is a checkpoint of the process bmcreset.exe.

              • 4. Re: S5520SC periodic momentary freezing

                The problem is caused by the driver bound to the second network interface. The second interface is disconnected. There is an immediate correlation between the periodic freezing and the enabling and disabling of the driver.


                Installed driver details:


                Name [00000010] Intel(R) 82575EB Gigabit Network Connection
                Adapter Type Ethernet 802.3
                Product Type Intel(R) 82575EB Gigabit Network Connection
                Installed Yes
                PNP Device ID PCI\VEN_8086&DEV_10A7&SUBSYS_34E28086&REV_02\001517FFFFA1D4BB01
                Driver c:\windows\system32\drivers\e1q60x64.sys (, 239.00 KB (244,736 bytes), 10/06/2009 21:35)


                There is an updated driver on Intel.com that does manifest this issue. The driver is available at:




                The driver version info reported is:


                Driver c:\windows\system32\drivers\e1q62x64.sys (, 296.17 KB (303,280 bytes), 08/07/2010 15:07)


                Note, the date is 08/07/2010, but the download page reports the update date of 12/17/2010.


                I know first hand how difficult it is to write Windows drivers and a network adapter drivers. I'm grateful to the engineers and testers who improved the driver.

                • 5. Re: S5520SC periodic momentary freezing

                  Are you saying that it still freezes with the newest driver?  Or that the newest driver fixes the issue?

                  • 6. Re: S5520SC periodic momentary freezing

                    There's a typo there. The issue does not manifest with the driver on intel.com.

                    • 7. Re: S5520SC periodic momentary freezing

                      Ah, good news!