Hello,

with the latest update (kernel 5.14.0-1-default) my HP EliteBook 840 G1 started
freezing when i put it into the Sleep or Hibernate mode. It seems some of this
procedure is done, ie. screen is completely off, yet it does not finish with
success which is normally indicated by slowly pulsing power button LED (it is
on and WiFi LED is amber, while it should be off). While i try to start it,
nothing happens and hard reset must be applied giving a fresh start for the
system.

In logs nothing fancy can be found:


2021-09-09T22:07:50.999884+02:00 susiak kernel: [   46.735367][ T2368] PM:
hibernation: hibernation entry
2021-09-09T22:07:51.000008+02:00 susiak systemd-sleep[2368]: Entering sleep
state 'hibernate'...

The problem must be specific for this laptop, cause the same kernel on ancient
Lenovo works just fine.

Please let me know what info/info I should provide to debug it deeper.

Thank you.

luk