Bug#1056135: regression: hibernation issues with 255~rc2-1

[Christoph Anton Mitterer]

Package: systemd
Version: 255~rc2-1
Severity: normal

Hey.

The following two issues are both solved when downgrading to 254.5-1 (and completely
rebooting the system, before trying again - they also shop up again, only after
completely rebooting the upgraded systemd again):

1) I have a somewhat special hibernation setup.
   Hibernation goes to a btrfs swap file on top of dm-crypt.
   The following unit files are used for that:
   /etc/systemd/system/data-swap-hibernation.swap:
	[Unit]
	Before=systemd-hibernate.service
	StopWhenUnneeded=true

	[Swap]
	What=/data/swap/hibernation
	Options=noauto

	[Install]
	RequiredBy=systemd-hibernate.service
   
   I also have a /etc/systemd/system/hibernation-cleanup.service:
	[Unit]
	Description=synchronise cached writes to persistent storage and free page cache before hibernation in order to minimise the image
	Before=hibernate.target

	[Service]
	Type=oneshot
	ExecStart=sync
	ExecStart=@sh %n:sh -c 'printf 1 >/proc/sys/vm/drop_caches'

	[Install]
	WantedBy=hibernate.target
   but I don't think this has anything to do with the issue here.

   There are symlinks:
	/etc/systemd/system/systemd-hibernate.service.requires/data-swap-hibernation.swap -> /etc/systemd/system/data-swap-hibernation.swap
	/etc/systemd/system/hibernate.target.wants/hibernation-cleanup.service -> /etc/systemd/system/hibernation-cleanup.service


   Especially, the hibernation file may not be availabe (or activated as swap),
   yet, when I go into hibernation.
   This caused desktop environments (I use Cinnamon) not to show the "Hiberate"
   button, which I've been able to solve via a:
   /etc/systemd/system/systemd-logind.service.d/disable-hibernation-swap-check.conf:
	[Service]
	Environment="SYSTEMD_BYPASS_HIBERNATION_MEMORY_CHECK=1"

   However, starting with 255~rc2-1 (but solved when going back to 254.5-1)
   this no longer seems to have an effect. At least Cinnamon then doesn't show
   the Hibernate button anymore.


2) When, because of (1), manually calling:
   # systemctl hibernate
   Call to Hibernate failed: No such file or directory

   The above error occurs (which itdoes not with 254.5-1), but the system then
   still seems to hibernate normally (and can also resume from that).


Notice also that I've changed logind.conf and sleep.conf.


Any ideas? I can forward the issue upstream if you think it's happening there.

Thanks,
Chris.



-- Package-specific info:

-- System Information:
Debian Release: trixie/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.5.0-4-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=en_DE.UTF-8, LC_CTYPE=en_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages systemd depends on:
ii  libacl1            2.3.1-3
ii  libapparmor1       3.0.12-1
ii  libaudit1          1:3.1.1-1
ii  libblkid1          2.39.2-6
ii  libc6              2.37-12
ii  libcap2            1:2.66-4
ii  libcryptsetup12    2:2.6.1-5
ii  libfdisk1          2.39.2-6
ii  libgcrypt20        1.10.2-3
ii  libkmod2           30+20230601-2
ii  liblz4-1           1.9.4-1
ii  liblzma5           5.4.4-0.1
ii  libmount1          2.39.2-6
ii  libpam0g           1.5.2-9.1
ii  libseccomp2        2.5.4-2
ii  libselinux1        3.5-1
ii  libssl3            3.0.12-2
ii  libsystemd-shared  255~rc2-1
ii  libsystemd0        255~rc2-1
ii  libzstd1           1.5.5+dfsg2-2
ii  mount              2.39.2-6
ii  systemd-dev        255~rc2-1

Versions of packages systemd recommends:
ii  dbus [default-dbus-system-bus]  1.14.10-3
ii  ntpsec [time-daemon]            1.2.2+dfsg1-2

Versions of packages systemd suggests:
ii  libfido2-1            1.13.0-1+b1
ii  libip4tc2             1.8.9-2
ii  libp11-kit0           0.25.0-5
ii  libqrencode4          4.1.1-1
pn  libtss2-esys-3.0.2-0  <none>
pn  libtss2-mu0           <none>
pn  libtss2-rc0           <none>
ii  polkitd               123-3
ii  python3               3.11.4-5+b1
pn  python3-pefile        <none>
pn  systemd-boot          <none>
ii  systemd-container     255~rc2-1
pn  systemd-homed         <none>
pn  systemd-resolved      <none>
pn  systemd-userdbd       <none>

Versions of packages systemd is related to:
ii  dbus-user-session  1.14.10-3
pn  dracut             <none>
ii  initramfs-tools    0.142
ii  libnss-systemd     255~rc2-1
ii  libpam-systemd     255~rc2-1
ii  udev               255~rc2-1

-- Configuration Files:
/etc/systemd/logind.conf changed:
[Login]
HandleSuspendKey=ignore
HandleSuspendKeyLongPress=ignore
HandleLidSwitch=lock
HandleLidSwitchExternalPower=lock
HandleLidSwitchDocked=lock

/etc/systemd/sleep.conf changed:
[Sleep]
HibernateMode=shutdown platform


-- no debconf information