Re: [Bugme-new] [Bug 16043] New: Resume w/USB remote working in 2.6.33.2, no longer in 2.6.33.10

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On Thu, 27 May 2010, Alan Stern wrote:

On Thu, 27 May 2010, Andrew Morton wrote:

https://bugzilla.kernel.org/show_bug.cgi?id=16043

           Summary: Resume w/USB remote working in 2.6.33.2, no longer in
                    2.6.33.10

First I need to back track and fix an error -- it's version 2.6.33.4 that this no longer works in, not 2.6.33.10 as I had indicated.

/proc/acpi/wakeup doesn't matter.  What matters are the power/wakeup
files under /sys.

Ok, all manipulation of /proc/acpi/wakeup is no off, so all devices read as "disabled".

If you want to enable wakeup, you have to do it manually or from a
boot-time script like /etc/rc.d/rc.local.  For example, you might need
to do:

	echo enabled >/sys/bus/pci/devices/0000:00:04.0/power/wakeup

The system has been this way a long time, but up until just now it
didn't work correctly.

In my case, "USB1" was the partical device that was waking up the system. According to /proc/acpi/wakeup, this is what I see:

    # grep USB1 /proc/acpi/wakeup
    USB1      S4     disabled  pci:0000:00:06.0

Now, I perform the following:

    # cat /sys/bus/pci/devices/0000\:00\:06.0/power/wakeup
       disabled
    # echo enabled > /sys/bus/pci/devices/0000\:00\:06.0/power/wakeup
    # cat /sys/bus/pci/devices/0000\:00\:06.0/power/wakeup
       enabled

Sadly it still will not resume.

Thanks for the tip, in the meantime I will go back to the 2.6.33-2 kernel and try modifying the /sys.../power/wakeup file in addition to / instead of the /proc/acpi/wakeup file.

Scott
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