unity and gnome-screen saver both triggered on resume

[Andy Whitcroft]

When resuming from suspend my hard drive does not reset the first time and a 10s pause is introduced. When this occurs I always get two screen savers, firstly gnome-screen-saver, then the unity screen saver.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: unity 7.3.2+15.10.20151016-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Mon Oct 19 10:30:51 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-06-20 (850 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130618)
SourcePackage: unity
UpgradeStatus: Upgraded to wily on 2013-11-10 (707 days ago)

[Andy Whitcroft (apw)]

After this event unity does own the screen saver:

$ busctl --user status org.gnome.ScreenSaver
PID=3468
PPID=3206
TTY=n/a
UID=1000
EUID=1000
SUID=1000
FSUID=1000
OwnerUID=1000
GID=1000
EGID=1000
SGID=1000
FSGID=1000
SupplementaryGIDs=4 24 27 30 46 113 124 125 126 127 1000
Comm=compiz
Exe=/usr/bin/compiz
CommandLine=compiz
Label=unconfined
CGroup=/user.slice/user-1000.slice/session-c2.scope
Unit=session-c2.scope
Slice=user-1000.slice
UserUnit=n/a
UserSlice=-.slice
Session=c2
AuditLoginUID=n/a
AuditSessionID=n/a
UniqueName=:1.23
EffectiveCapabilities=
PermittedCapabilities=
InheritableCapabilities=
BoundingCapabilities=cap_chown cap_dac_override cap_dac_read_search
        cap_fowner cap_fsetid cap_kill cap_setgid
        cap_setuid cap_setpcap cap_linux_immutable cap_net_bind_service
        cap_net_broadcast cap_net_admin cap_net_raw cap_ipc_lock
        cap_ipc_owner cap_sys_module cap_sys_rawio cap_sys_chroot
        cap_sys_ptrace cap_sys_pacct cap_sys_admin cap_sys_boot
        cap_sys_nice cap_sys_resource cap_sys_time cap_sys_tty_config
        cap_mknod cap_lease cap_audit_write cap_audit_control
        cap_setfcap cap_mac_override cap_mac_admin cap_syslog
        cap_wake_alarm cap_block_suspend cap_audit_read

[Andy Whitcroft (apw)]

Here is a dbus-monitor over a suspend/resume showing the double login.