Comment 4 for bug 1333569

Also, if I wake it up before it wake itself up automatically with fwts, this issue won't happen

ubuntu@201401-14542:~$ sudo hwclock -r ; sleep 3;sudo fwts -P s4 --s4-device-check --s4-device-check-delay=45 --s4-sleep-delay=120; sleep 3 ;sudo hwclock -r
Tue 24 Jun 2014 05:17:01 AM EDT -0.234698 seconds
Running 1 tests, results appended to results.log
Test: S4 hibernate/resume test.
(Wake it up manually after 1 minute)
  S4 hibernate/resume test. 4 passed, 1 failed
Tue 24 Jun 2014 05:19:45 AM EDT -0.437938 seconds
ubuntu@201401-14542:~$ sudo hwclock -r ; sleep 3;sudo fwts -P s4 --s4-device-check --s4-device-check-delay=45 --s4-sleep-delay=120; sleep 3 ;sudo hwclock -r
Tue 24 Jun 2014 05:20:33 AM EDT -0.812936 seconds
Running 1 tests, results appended to results.log
Test: S4 hibernate/resume test.
(Let it wake itself up)
  S4 hibernate/resume test. 4 passed, 1 failed
hwclock: select() to /dev/rtc to wait for clock tick timed out: No such file or directory