Comment # 31 on bug 925873 from Marc Sch�tz

(In reply to Thomas Blume from comment #25)
> 1. run '/usr/bin/systemd-sleep-grub pre'
> afterwards suspend via 'echo disk > /sys/power/state'

This succeeded. I attached the output of systemd-sleep-grub-pre and the journal
of the entire successful boot.

> 
> 2. run '/usr/lib/systemd/systemd-sleep hibernate' without a previous
> /usr/bin/systemd-sleep-grub

Resume failed. I could not capture the output of the command, but I attached
the journal of the hanging boot (resp. the part before the suspend), the
journal of the next normal boot, and a screenshot taken during the hanging
resume.

The last two lines on the screenshot are interesting. I pressed <Esc> after I
entered the encryption passphrase to see the messages, and those lines appeared
a few seconds later. It looks like the system attempts to hibernate again?