Solutions Log by Dan Reiland


The device, \Device\Ide\iaStor0, did not respond within the timeout period

After an updated release of Intel's Matrix Storage Manager [v.] and chipset drivers for Windows, you experience unexpected system timeouts, lockups, pausing, or freezing. The following event is recorded in the System event log:

Log Name: System
Source: iaStor
EventID: 9
Level: Error
The device, \Device\Ide\iaStor0, did not respond within the timeout period.

The issue is the result of Aggressive Link State Power Management (ALPM) on the PCI-Express bus negotiating a lower power state for the link between the controller and disk when there is no activity. When ALPM works, disk requests are queued, the serial link revived, and the queued requests are sent to the relevant disk; this requires a disk that supports ALPM.

Modify the advanced settings of your active power management scheme in Windows to turn PCI Express Link State Power Management off.

Searching for a solution yielded a number of possibilities.

Setting the value of:

HKLM\SYSTEM\CurrentControlSet\Services\iaSTOR\Parameters\PortN\LPMDSTATE  0

as discussed by Derek Seaman did not resolve my issue.





as suggested by Paul's Computer Service was also ineffective. At the time I was running the latest set of drivers for my platform. Caveat emptor: the solution I outlined in this article worked for me.

Intel CS-025783 - Possible issues with Windows Vista* and IntelĀ® RAID
Windows 7 Intel SATA/AHCI Lockups
IntelĀ® Matrix Storage Manager Bug

Comments (12) Trackbacks (2)
  1. thank you thank you!!!

    you saved my hide. had 10 trader workstations suffering from this. seems to be working!!

  2. exactly the same problem happens to me in windows xp, but i can’t find this feature here. do you have any idea where can i turn it off in windows xp?


  3. I do not believe that Windows XP has support for ALPM.

    Have you looked at firmware for the drive, BIOS, disk controller? Has this been a long standing and persistent issue with the system in question?

  4. Thanks a bunch! i was pretty sure it was an Intel thing – just did a driver round, but wouldnt have looked here. Saved me a ton of time, thanks!

  5. I have this issue on my Asus G73JW Notebook however my Link State Power Management settings are already set to OFF for the High performance profile in which the problem normally occurs. The reason I say normally is because I mostly use my laptop with its charger therefore I pretty much always run the high performance mode.

    What can I do as my settings are already off however I’ve had my system freeze up 3 times in the last 2 hours. The above error is recorded each time.

  6. You will want to ensure that you have Link State Power Management set to OFF in all profiles. Also ensure that you are running the latest set of Intel drivers for your chipset.

  7. anybody without an asus motherboard having this problem?

  8. I had the issue with an Evga motherboard.

  9. this solution, coupled with the info at
    lead me to a potential solution. it all makes plenty of sense. 15 yrs ago i worked tech support for gateway and power save options were as much a problem then as they are now. I’m not surprised in the slightest by the solution.

    well done.

  10. I had this problem with ASUS G73W and spent months working on it. Replaced hard drives and went through all the settings including power state and finally replaced the motherboard and its worked fine since with no errors.

  11. I have two options under PCI Express–>Link State Power Management. Those are –On battery
    –Plugged in
    Which option I have to select to solve this issue.
    I’m using HP ProBook 6560b model.

    Thank you.

  12. Both. You could also update the driver to resolve the issue.

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