Comment # 18 on bug 935086 from Uwe Geuder

(In reply to Takashi Iwai from comment #17)

> 
> All things look like a side effect of racy resume procedure to me, so I


Yes, same here.

I went back to the default configuration and added

ps -ef >/dev/console
sleep 15

at the beginning of /usr/lib/dracut/modules.d/95resume/resume.sh

(needs to be built with dracut --add debug, because by default the ps binary is
not in initramfs)

I would have expected that the sleep 15 prevents the hang as does the
rd.break=pre-mount

But it does not, resume hangs in the "old" location.  I attach the screen
picture of ps output, but probably it's more entertaining than helpful to
understand what is going on. Need to stop debugging now. Maybe I can add even
more debugging in a few days.