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Re: [linux-usb-devel] USB mouse autosuspend




On Tue, 2007-07-03 at 18:54 +0200, Jiri Kosina wrote:
>On Tue, 3 Jul 2007, Alan Stern wrote:
>
>> It's totally bogus!  With no driver loaded, the mouse won't be enabled 
>> for remote wakeup.  Consequently it should never be resumed, no matter 
>> what you do to it.  If it does send a wakeup request then the mouse is 
>> buggy. Conversely, if the mouse doesn't get resumed then it shouldn't 
>> draw enough current to turn on an LED.  Either way, the mouse isn't 
>> working right.
>
>Kay, by "no drivers loaded" you mean only usbhid driver unloaded, or also 
>usb host/core drivers?

Yes, all other modules are loaded.

>It could be that only the light goes on for a few seconds (Alan, are you 
>sure that the power would not suffice?), but the mouse is not issuing any 
>wakeup request. Kay, if you have only usb hid unloaded but the rest of USB 
>infrastructure is there, we could easily see from usbmon output whether 
>the mouse really did issue a wakeup request.

It's a recent standard and cheap Logitec mouse. If you can't reproduce it, let me know if I should try to capture the traffic.

Thanks,
Kay

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