LL 5.4 Hibernate won't come back

[trinidad]

when I choose the actual kernel it look like booting but ends up in black screen

Probably because of nomodeset option in default grub. Also check all the UUID numbers to see if they are correct for resume.
https://fitzcarraldoblog.wordpress.com/2018/07/14/configuring-lubuntu-18-04-to-enable-hibernation-using-a-swap-file/
TC

[freewind]

Some further findings:
After adding resume-UUID and "nomodest" to /etc/default/grub it has a totally different behavior between "sudo systemctl hibernate" and the "hibernate button" and "sudo pm-hibernate"

"sudo systemctl hibernate" work as expected.

"sudo pm-hibernate" is a little bit faster at power down. But on boot it go to the grub menu and when I choose the actual kernel it look like booting but ends up in black screen. 

"hibernate button" showing stop network and power down.
On boot I got a faster normal boot.

How to get the working "systemctl hibernate" to the hibernate button?
 

[freewind]

Hi there,

I have fresh installed LL 5.4 on a Dell T3600(UEFI disabled) with success.
By testing some functions I find out that Hibernate  (sudo pm-hibernate) work well (save pages to swap partition, power-off)
and on Power-On it reads the pages back (can see on screen) (resume: image successfully loaded) but then nothing happens. No further boot, no Alt-F1-F6 worked. Only power down to reboot normal.

If I use the Hibernation button in Menu it is nothing to see (only the wait time for network interface to come down) and system power off.
On power back the system normal boots.

Any help is welcome.

THX Frank