Comment # 10 on bug 935086 from Uwe Geuder

(In reply to Takashi Iwai from comment #9)

> 
> Is quiet boot option removed?

There is no quiet option on my kernel line. It was the first thing I removed
when starting this debugging exercise and I have not put it back since

> Also, increase the log level via alt-sysrq-8 or 9 beforehand.

The log level seems to have no effect on SysRq-L SysRq-P, and SysRq-T. when the
system hangs no information is shown even if the log level is 8 or 9. When the 
system works, full information is show even if the log level is 0.

During the boot more messages are shown if log level is 9. But there is no
additional message shortly before the system hangs at "Reached target Remote
File system" as shown in the screen pictures before.

> 
> What if you pass resumedelay=10 boot option?  This will delay the resume in
> 10 seconds after kicked off.

I changed to resumedelay=30 in order to be sure absolutely I don't miss any
effect of the option. This option does not seem to work as intended. The delay
happens every time (also on fresh boots) even before the disk password is
asked. Because the snapshot is inside the encrypted volume I don't think the
system can already know at this point of time that it should resume.

After entering the disk password the parameter seems to have no effect any more
in either of the 3 cases:

1.) systemctl hibernate: resume hangs forever
2.) echo disk > /sys/power/state: no additional wait of 30 seconds when the
system is resuming
3.) Alt-SysRq-i when the system hangs: no additional wait when the system is
resuming.