I've got a desktop system with no ps/2 ports. I wanted to wake the
machine from S3 suspend using either the USB keyboard or mouse. After
researching this topic a bit online, I was unable to find a reasonably
simple solution. Following some study, I devised the following udev rule
for enabling the wakeup capability of any attached USB HID device. Or at
least any directly attached USB HID device. It turns out that the
"enabled" string has to be present in the power/wakeup file associated
with the actual device(s) and in the analogous file associated with the
host controller. Adding intervening hubs would presumably complicate
matters. The rule is pasted below and in the attached file.
Enjoy.
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/etc/udev/rules.d/90-persistent-usb.rules------------------------------------------------------------------
ACTION=="add", SUBSYSTEM=="usb", DRIVER=="usbhid", RUN+="/bin/sh -c
'echo enabled > /sys$env{DEVPATH}/../../power/wakeup'", RUN+="/bin/sh -c
'echo enabled > /sys$env{DEVPATH}/../power/wakeup'"
ACTION=="add", SUBSYSTEM=="usb", DRIVER=="usbhid", RUN+="/bin/sh -c 'echo
enabled > /sys$env{DEVPATH}/../../power/wakeup'", RUN+="/bin/sh -c 'echo
enabled > /sys$env{DEVPATH}/../power/wakeup'"
