> Is the swap space big enough?
A good point. This worked on previous versions on Ubuntu with swap
(18GB) only 50% of RAM (32GB). I recreated my /swapfile with 38GB and
the same issue persists. ie.
$ free -m
total ...
Mem: 31964
Swap: 38911
> Furthermore, the hibernation failure isn't logged in the dmesg.
That's correct. The machine just stalls with a blank screen. It's still
awake as is apparent by motherboard lights. It cannot be awoken in any
way and needs to cold restarted using power button.
Curiously if I run smem before I attempt to hibernate, it does not show
any processes using swap. ie
$ smem --columns="swap" --no-header | tr -d " " | awk '$1 != 0' | wc -l
0
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https://bugs.launchpad.net/bugs/1962359
Title:
Hibernation fails due to resource busy during swap file check
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