On Tue, May 17, 2011 at 5:56 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
> On Wednesday, May 18, 2011, Dwight Schauer wrote:
>> On Tue, May 17, 2011 at 4:54 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
>> > On Tuesday, May 17, 2011, Dwight Schauer wrote:
>> >> On Tue, May 17, 2011 at 4:43 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
>> > ...
>> >> >
>> >> > OK, one more test, please.
>> >> >
>> >> > Try to do
>> >> >
>> >> > # echo core > /sys/power/pm_test
>> >> > # echo mem > /sys/power/state
>> >> >
>> >> > (that should simulate suspend, but without going into the BIOS, and it
>> >> > should return do the command prompt after 5-10 sec.) and check if the
>> >> > USB3 controllers work after that ("echo none > /sys/power/pm_test" resets
>> >> > to the normal suspend behavior).
>> >> >
>> >> > Thanks,
>> >> > Rafael
>> >>
>> >> No problem.
>> >>
>> >> The simulated suspend works fine.
>> >
>> > Good.
>> >
>> >> Also, waking up from S3 via a PS/2 keyboard works fine.
>> >
>> > Hmm. Do you mean that the USB3 controllers work after the resume if
>> > the box has been woken up via the keyboard and they don't work when it
>> > has been woken up via a power button?
>> >
>> > Rafael
>>
>> They work either way. I'm just not able to get the USB keyboard that
>> is connected to the USB3 controller to perform the wakeup. (Which is
>> what I thought I made clear from the beginning and what Alan Stern had
>> reiterated for new readers further into the thread).
>
> Oh, I must have missed that information. Sorry about that.
>
> So, the situation is that if you set up the USB3 controllers to wake up
> and next you wake up the system from S3 using a USB device connected to one
> of those controllers, then they appear to be in D3 after the resume and
> apparently cannot be put into D0. However, if the wakeup is done in any
> different way, they work correctly after the resume, right?
>
> Is that the case on both the affected systems?
>
On both systems the USB3 controllers plugged into PCIe slots work fine
after the system has been woken up from S3 suspend state.
The USB3 keyboard plugged into the PCIe USB3 controller is immediately
avaiable after the system has woken up. It is just that in Linux a
keyboard plugged into the USB3 controller can not be used to wake the
system up when it has gone into S3 suspend. With Windows 7 on our test
systems our USB3 contoller (the Texas Instruments Inc. PCEe xHCI
device) a USB keyboard plugged into it can wake it up from an S3
suspend.
Dwight Schauer
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