Suspend not available in Cinnamon after upgrade to Ubuntu 15.04

[Jose Gómez]

After the upgrade to Ubuntu 15.04, the suspend option is not available in Cinnamon.

The Cinnamon team states that some Systemd library may be missing in Ubuntu: https://github.com/linuxmint/Cinnamon/issues/4060

I have tried to boot using Upstart (using advanced boot) and the suspend option is not available either, so there may be a separate issue affecting Upstart.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: udev 219-7ubuntu3
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: X-Cinnamon
CustomUdevRuleFiles: 60-ssd-scheduler.rules
Date: Mon Apr 20 16:09:05 2015
InstallationDate: Installed on 2014-02-04 (440 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140203)
MachineType: Dell Inc. XPS 15 9530
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic.efi.signed root=UUID=d7bcaffd-60e1-4fef-93fb-3d73a8d18907 ro quiet splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: Upgraded to vivid on 2015-02-26 (52 days ago)
dmi.bios.date: 10/15/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: XPS 15 9530
dmi.board.vendor: Dell Inc.
dmi.board.version: A07
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA07:bd10/15/2014:svnDellInc.:pnXPS159530:pvrA07:rvnDellInc.:rnXPS159530:rvrA07:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: XPS 15 9530
dmi.product.version: A07
dmi.sys.vendor: Dell Inc.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Martin Pitt (pitti)]

suspend happens through logind since Ubuntu 13.10. The package depends on libsystemd-login-dev, and according to the build log (https://launchpadlibrarian.net/188689398/buildlog_ubuntu-vivid-amd64.cinnamon-session_2.2.2-5build1_UPLOADING.txt.gz) it uses systemd for session tracking. Our systemd package ships all libraries, we didn't disable any.

So I suggest debugging what cinnamon-session tries to call when it determines whether suspend is available, there's obviously some bug there.

[Jose Gómez (adler-dreamcoder)]

As indicated in https://github.com/linuxmint/Cinnamon/issues/4060#issuecomment-93941975, Cinnamon tests for systemd-logind or old upower:

https://github.com/linuxmint/cinnamon-session/blob/master/cinnamon-session/csm-logout-dialog.c#L190

Apparently, the new systemd-login is still not supported.

[Jose Gómez (adler-dreamcoder)]

The specific check seems to be this one: https://github.com/linuxmint/cinnamon-session/blob/master/cinnamon-session/csm-systemd.c#L354

[Jon Bakker (xc-racer2)]

I also had this bug but by setting three different keys to true as seen under the "cinnamon-desktop, cinnamon-session, cinnamon-settings-daemon, cinnamon-screensaver" section at http://segfault.linuxmint.com/2015/05/cinnamon-2-6-updates-romeo/ brought the suspend button back. See comment #2 by clem for the full keys to change.

I don't think this matters, but I am on a fresh install of 15.04.

By the way, these three keys are only available in Cinnamon 2.6 - I'm not sure what other previous versions used

[Jose Gómez (adler-dreamcoder)]

Confirmed. Updating to Cinnamon 2.6 (using the PPA ppa:moorkai/cinnamon), and executing the commands below, solved the issue for me (after a restart).

gsettings set org.cinnamon.desktop.session settings-daemon-uses-logind true
gsettings set org.cinnamon.desktop.session session-manager-uses-logind true
gsettings set org.cinnamon.desktop.session screensaver-uses-logind false

[Fantu (fantonifabio)]

Official cinnamon packages (sync from debian) have already systemd enabled by default and should be ok.
The only cases where this is not working FWIK is upgrade from unofficial repo/ppa that not have systemd support and keys enabled by default.