Ok, today a had time to test this so I’m reporting back:
I switched kernel as you suggested and first time I tried to hibernate - I got regular black screen with laptop still running on and no internet after logging in again.
I reverted /etc/systemd/sleep.conf to be:
HibernateMode=platform shutdown
and it worked.
Afterwards tried a bunch of times to hibernate/wake up system and only once mentioned in my original post problem occurred.
The thing is this 5.4 kernel gives me also additional problems:
- Each time I click “Log Out” button I hear very loud annoying beep sound coming from motherboard, which I can’t turn off.
(tried this suggestion, but it didn’t do anything) - Each time I hibernate there is this error on the screen:
