Comment # 6 on bug 1226232 from Gui Do

I was able now to create a complete systemd-log (see attachement). 

To clarify: I removed the USB mouse connector and closed the lid of the laptop,
it was going to sleep, the green standby LED flashed. Then after about two
hours the LED was still flashing, so no hibernate was running. I opened the
laptop, the screen remained black and the device did not respond to any
keystrokes. I plugged the mouse connector back in as a test. The corresponding
KDE desktop system sound could be heard - the computer was not dead, it just
stopped responding. I simply closed the laptop lid and opened it again and
ended up back in the lock screen, the device responded again and I was able to
log in again and create the attached log files.