What does "USB selective suspend" mean?

Anonymous
2010-10-14T06:39:16+00:00

In Windows 7, Power Options->USB Settings->USB selective suspend setting, what does "USB selective suspend" mean?  Also, given that there is only one setting, why does it say "USB Settings" instead of "USB Setting"?

Windows for home | Previous Windows versions | Devices and drivers

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Anonymous
2011-02-17T03:53:10+00:00

A USB device driver can send a message to windows telling it to idle the device.  This puts the device in a low-power state (the suspend state).  When a USB device is suspended, windows does not wait for it to respond before entering a sleep or hibernate mode.  If you disable this feature, the system will simply return a failure to the driver when the driver attempts to enter suspend state.  If the driver complies with Microsoft guidelines, it will simply retry the idle request at every expiration of its idle timer.

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  1. Anonymous
    2012-10-14T10:18:15+00:00

    If you don't like Google, you might try going to answers.microsoft.com and see if someone there can help you.  A lot of friendly, helpful people frequent that site.  But there are also a few that have nothing better to do with their lives than to harass people that ask questions.  Don't worry; you'll know them when you come across them.  Just ignore them. They're mostly young boys who have nothing better to do because their <Removed> is so bad the only date they've ever had is with Rosie Palm, but there are a few adults that try to make others feel stupid to make up for their abnormally small penises.

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  2. Anonymous
    2012-09-20T15:41:18+00:00

    Hi All,

    Considering the age of the thread and to avoid confusion, if the troubleshooting steps in this thread did not resolve your issue I would recommend creating a new thread so that the community can focus on that thread. Refer to the following link prior to posting a question so that you may provide all the relevant information, for us to help you:

    http://support.microsoft.com/kb/555375

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  3. Anonymous
    2012-09-13T23:22:45+00:00

    Re: your question, "So here's the question, do you think that going to Power Options->USB Settings->USB selective suspend and then DISABLING it would have the same effect as what was described above?"

    This link might be helpful.

    http://9b5.org/2011/10/windows-disable-usb-power-saving-disableselectivesuspend/

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  4. Anonymous
    2012-07-18T08:55:48+00:00

    dude, where do you think Google Searches take you?... places like this!; don't waste the space telling people to Google it. You think someone would come here before typing it in Google?!

    Agreed - I also found this page from Google. (In fact it is the first result for searching "USB Selective Suspend"!)

    This feature is enabled/disabled via Power Plans. If I understand this correctly, then setting this to "Enabled" uses less power, correct? Is it a considerable amount of battery-power or is it pretty negligible? (I assume that it depends on which devices (and number of devices) one has connected via USB, but on average, in most situations does this make much of a difference?)

    (The reason for my confusion is that on my netbook (running Windows 8) both the "High performance" and the "Power saver" plans have this defaulted to "Enabled.")

    Thanks much for your help, "help forums are your friends."  ;)

    MikeY

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