[Technology] Getting my Lenovo Twist s230u to actually go to sleep

I use a Lenovo Twist s230u.  I run Fedora Linux.  It has trouble going to sleep.  It just keeps waking up.  I try to sing it lullabies to no avail. 



After suffering for too long, I sought answers, and found these Launchpad bugs helpful:

• [Thinkpad Twist] resumes immediately after suspend 
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309938


• Lenovo Thinkpad Twist: Suspend does not work
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1213233 


• [Lenovo Thinkpad Twist] Won't stay suspended after first suspend
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1316221

For a while, I was just doing the suboptimal:

• # for i in EHC1 EHC2 XHC; do echo "$i" > /proc/acpi/wakeup; done

after restarting.



I got bored with the 5 seconds it took to run that each time I rarely restarted, so I looked into boot scripts for systemd:

• https://linuxconfig.org/how-to-automatically-execute-shell-script-at-startup-boot-on-systemd-linux

So, now I have:

• /etc/systemd/system/toggle-wakeup-devices.service

Which contains:

[Unit]

[Service]
ExecStart=/usr/local/bin/toggle-wakeup-devices.sh

[Install]
WantedBy=default.target

 And I have

•  /usr/local/bin/toggle-wakeup-devices.sh

Which contains:

#!/bin/sh

for i in EHC1 EHC2 XHC; do
      echo "$i" > /proc/acpi/wakeup;
done

This still isn't quite optimal.  (Would be nice to work out an appropriate patch to fix this behaviour for all users and submit it, rather than a workaround.)  But I have a Masters to finish, and this is sufficient for me for now. :)