On Tue, 2024-04-30 at 15:36 -0700, Samuel Sieb wrote:
>
> And the system is not hibernating.
>
> /dev/zram0 exists and is configured:
Yes, and you can see it being disabled in the logs because you can't
hibernate to RAM.
> # swapon
> NAME TYPE SIZE USED PRIO
> /SWAP/swapfile file 48G 0B -2
> /dev/zram0 partition 8G 512K 100
Do you have secure boot enabled?
No, however today's log is different:
May 01 01:02:44 Bree systemd[1]: Starting hibernate-preparation.service - Enable swap file
and disable zram before hibernate...
May 01 01:02:44 Bree kernel: [drm] scheduler comp_1.1.1 is not ready, skipping
May 01 01:02:44 Bree kernel: [drm] scheduler comp_1.0.1 is not ready, skipping
May 01 01:02:44 Bree kernel: [drm] scheduler comp_1.1.1 is not ready, skipping
May 01 01:02:44 Bree kernel: [drm] scheduler comp_1.0.1 is not ready, skipping
May 01 01:02:45 Bree systemd[1]: dev-zram0.swap: Deactivated successfully.
May 01 01:02:45 Bree systemd[1]: hibernate-preparation.service: Deactivated successfully.
May 01 01:02:45 Bree systemd[1]: Finished hibernate-preparation.service - Enable swap file
and disable zram before hibernate.
May 01 01:02:45 Bree systemd[1]: hibernate-preparation.service: Consumed 1.158s CPU time.
May 01 01:02:45 Bree systemd[1]: Starting systemd-hibernate.service - System Hibernate...
May 01 01:02:45 Bree systemd[1]: Stopping systemd-zram-setup(a)zram0.service - Create swap
on /dev/zram0...
May 01 01:02:45 Bree kernel: [drm] scheduler comp_1.1.1 is not ready, skipping
May 01 01:02:45 Bree kernel: zram0: detected capacity change from 16777216 to 0
May 01 01:02:45 Bree kernel: hpet: Lost 1 RTC interrupts
May 01 01:02:45 Bree systemd-sleep[130021]: Performing sleep operation
'hibernate'...
May 01 01:02:45 Bree kernel: PM: hibernation: hibernation entry
May 01 01:02:45 Bree systemd[1]: systemd-zram-setup(a)zram0.service: Deactivated
successfully.
May 01 01:02:45 Bree systemd[1]: Stopped systemd-zram-setup(a)zram0.service - Create swap on
/dev/zram0.
May 01 08:00:48 Bree kernel: Filesystems sync: 0.164 seconds
May 01 08:00:50 Bree kernel: Freezing user space processes
and hibernation did work. Possibly a timing issue, so I'll have to look
at my hibernate-preparation script:
$ cat /etc/systemd/system/hibernate-preparation.service
[Unit]
Description=Enable swap file and disable zram before hibernate
Before=systemd-hibernate.service
[Service]
SyslogIdentifier=%N
User=root
Type=oneshot
ExecStart=/bin/bash -c ' \
swapon -a; \
swapoff /dev/zram0; \
exit 0; \
'
[Install]
WantedBy=systemd-hibernate.service
poc