A timeout occurred while waiting for the EHCI host controller Asynchronous Schedule to transition to the enabled state.

Anonymous
2012-10-29T18:24:53+00:00

When I'm using my computer running Windows 8 Pro x64 randomly all of the USB's will freeze up, yet the PC will still run fine. Then they will all come back online a little while later. 

By online my WiFi adapter doesn't seem to re-initiate.

Checking the events log I see a flurry of the following error.

"A timeout occurred while waiting for the EHCI host controller Asynchronous Schedule to transition to the enabled state."

Thanks,

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Windows for home | Previous Windows versions | Devices and drivers

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Anonymous
2014-11-12T17:34:51+00:00

Those of you with USB WiFi adapters based on Atheros AR9271 chips (TP-Link WN722N, Netgear WNA1100 etc.) might want to try this.

I found a driver in the windows update catalog that is newer (version 2.0.0.49) than the one offered by windows update (2.0.0.32) that seems to have cured all the WiFi drops I was getting under heavy network load.

Atheros AR9271 Driver x64

You'll have to extract the .cab(inet) archive and then do a manual driver install (right click the adapter in device manager, update drivers and then pick the location manually, point it to where you unpacked the driver, from the 'have disk' dialog)

I have been running this for over a month and have not had any network specific drops since. Now, if I could only find a fix for the joystick drops in FSX...sigh

Notice, this is the 64bit driver, I cannot comment on the x86 driver one way or the other.

Also, if you are already running version 2.0.0.49 of the driver and still have problems, obviously this won't help you.

Hope this helps someone, best of luck.

Much thanks，this REALLY helps on tplink W822N

Problem solved~~~

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  1. Anonymous
    2013-06-19T00:36:06+00:00

    I gave up on this quite a while ago and downgraded my desktop back to Windows 7.  I think this may be a bios or chipset/driver issue that manufacturers either don't know how to fix or won't.

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  2. Anonymous
    2013-06-20T08:18:12+00:00

    I gave up on this quite a while ago and downgraded my desktop back to Windows 7.  I think this may be a bios or chipset/driver issue that manufacturers either don't know how to fix or won't.

    Thanks Jarret but how very sad that we can't get an issue such as this corrected by Microsoft.  

    Do they follow these forums?  You would expect some sort of bot to be trolling these forums in particular?

    In any case, I am going to move the USB 2.0 target backup drive from the USB 2.0 interface to the USB 3.0 PCI card which has 4 ports.  While the above sounds like a hardware issue and some of you may think why shoudl Microsoft take responsibility it is still about communications between 2 drives on the same interface so they should at least be abel to cover some of the issue wouldn't you think?

    My USB 3.0 PCI card also supports 2.0.  It has my main backup drive (USB 3.0) but both drives won't be used concurrently so hopefully this may solve the issue?...

    I will test tonight and post the result.

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  3. Anonymous
    2013-06-21T04:19:23+00:00

    "I gave up on this quite a while ago and downgraded my desktop back to Windows 7.  I think this may be a bios or chipset/driver issue that manufacturers either don't know how to fix or won't.

    Thanks Jarret but how very sad that we can't get an issue such as this corrected by Microsoft.

    Do they follow these forums?  You would expect some sort of bot to be trolling these forums in particular?

    In any case, I am going to move the USB 2.0 target backup drive from the USB 2.0 interface to the USB 3.0 PCI card which has 4 ports.  While the above sounds like a hardware issue and some of you may think why should Microsoft take responsibility it is still about communications between 2 drives on the same interface so they should at least be abel to cover some of the issue wouldn't you think?

    My USB 3.0 PCI card also supports 2.0.  It has my main backup drive (USB 3.0) but both drives won't be used concurrently so hopefully this may solve the issue?...

    I will test tonight and post the result."

    For anyone interested not good news from my test overnight.

    While the Acronis Trueimage 2013 File Backup was logged as completing successfully it did not then successfully Validate.  This is a problem I have had many times now under Windows 8.

    However, we have a partial improvement in that the backup itself did not fall over this time.  Even though the validate logged the backup as corrupted, I was successfully able to restore and open a couple of files picked at random; not all bad news I guess.

    In summary, there still appears to be a problem using backup software to copy from and to an external USB drive whether it is on the same interface or not.   I upgraded from Vista to Win 8 Pro so don't have the option of going back to Win 7.  While not good the situation is tolerable so I guess I will persist with what I have.

    I would certainly appreciate if anyone finds or here's of any solutions.

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  4. Anonymous
    2013-11-27T21:51:30+00:00

    Arrgh,

    I have just upgraded my stable win7 to win8.1 and am experiencing these time-outs on USB!

    I use a ASUS M4A89GTD PRO/USB3 with a Phenom X6. Be warned! Stay with Win7 if you own an 'older' ASUS AMD Mobo!

    I have a USB audio interface and a USB Wifi adapter both showing these issues!

    I am going back to Win7 again, as there seems to be no light in the tunnel!

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