Comment # 15 on bug 1028136 from Daniel Molkentin

A bit more detail on the subject of why there is a difference:

dracut: Executing: /usr/bin/dracut -v --logfile /var/log/YaST2/mkinitrd.log
--force /boot/initrd-4.10.3-1-default 4.10.3-1-default

vs.

dracut: Executing: /usr/bin/dracut --no-host-only -v --logfile
/var/log/YaST2/mkinitrd.log --force /boot/initrd-4.10.3-1-default
4.10.3-1-default

mkinitrd's -A actually sets --no-host-only which excludes the 95resume module.
This module tries to resume from the block device in question, and fails. So
this explains why the -A one boots fast while the other times out.

We still have to find out why 95resume adds
resume=UUID=bab51854-d247-4166-90cc-2b9041e5c199, despite there being no trace
of said UUID so far.