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[Martin Pitt <martin.pitt@xxxxxxxxxx>]

I can reproduce this. I added a "sleep 5" to a pm-utils sleep.5 script.
When I run systemd-shim in the foreground in my session, I get this
output after resuming:

14:39:18 O: GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type 'session'
14:39:18 O: GDBus-debug:Address: env var DBUS_SESSION_BUS_ADDRESS is not set
14:39:18 O: GDBus-debug:Address: env var DBUS_SYSTEM_BUS_ADDRESS is not set
14:39:18 O: GDBus-debug:Address: env var DBUS_STARTER_BUS_TYPE is not set
14:39:18 O: GDBus-debug:Address: Running 'dbus-launch --autolaunch=daca3d32fc003f5e41857948525b8e7d --binary-syntax --close-stderr' to get bus address (possibly autolaunching)
[...]
14:39:18 O: GDBus-debug:Address: dbus-launch stderr output:
14:39:18 O: 5994: Autolaunch enabled (using X11).
14:39:18 O: 5994: --exit-with-session automatically enabled
14:39:18 O: 5994: Connected to X11 display ':0.0'
14:39:18 O: 5994: dbus-daemon is already running. Returning existing parameters.
14:39:18 O: 5994: dbus-launch exiting
14:39:18 O: GDBus-debug:Address: Returning address 'unix:abstract=/tmp/dbus-MIO6Nrok3P,guid=7a808dc6cc702b9d36d2fc23528f5e40' for bus type 'session'
14:39:18 O: GDBus-debug:Auth: CLIENT: initiating
14:39:18 O: GDBus-debug:Auth: CLIENT: sent credentials 'GCredentials:linux-ucred:pid=5062,uid=0,gid=0'
14:39:18 O: GDBus-debug:Auth: CLIENT: writing 'AUTH\r\n'
14:39:18 O: GDBus-debug:Auth: CLIENT: WaitingForReject
14:39:18 O: GDBus-debug:Auth: CLIENT: WaitingForReject, read 'REJECTED EXTERNAL DBUS_COOKIE_SHA1 ANONYMOUS'
14:39:18 O: GDBus-debug:Auth: CLIENT: Trying to choose mechanism
14:39:18 O: GDBus-debug:Auth: CLIENT: Trying mechanism 'EXTERNAL'
14:39:18 O: GDBus-debug:Auth: CLIENT: writing 'AUTH EXTERNAL 30\r\n'
14:39:18 O: GDBus-debug:Auth: CLIENT: WaitingForOK
14:39:18 O: GDBus-debug:Auth: CLIENT: WaitingForOK, read 'OK 7a808dc6cc702b9d36d2fc23528f5e40'
14:39:18 O: GDBus-debug:Auth: CLIENT: writing 'NEGOTIATE_UNIX_FD\r\n'
14:39:18 O: GDBus-debug:Auth: CLIENT: WaitingForAgreeUnixFD
14:39:18 O: GDBus-debug:Auth: CLIENT: WaitingForAgreeUnixFD, read='AGREE_UNIX_FD'
14:39:18 O: GDBus-debug:Auth: CLIENT: writing 'BEGIN\r\n'
14:39:18 O: GDBus-debug:Auth: CLIENT: Done, authenticated=1


and indeed I see a new dbus daemon:

root      4610  0.0  0.0  24444   624 pts/15   S    14:38   0:00 dbus-launch --autolaunch=daca3d32fc003f5e41857948525b8e7d --binary-syntax --close-stderr
root      4613  0.0  0.0  30384   968 ?        Ss   14:38   0:00 //bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session

If I run the shim under env -u DISPLAY (as it would when being D-BUS
activated), I get the same D-BUS errors as in the logs of the reporters.

** Changed in: systemd-shim (Ubuntu)
   Importance: Undecided => High

** Changed in: systemd-shim (Ubuntu)
       Status: Incomplete => Triaged

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https://bugs.launchpad.net/bugs/1252121

Title:
  missing resume signal because D-BUS connection goes away

Status in “linux” package in Ubuntu:
  Invalid
Status in “systemd-shim” package in Ubuntu:
  Triaged

Bug description:
  As per request from bug #1184262, this is a new report, along with
  dbus (to be attached)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: systemd-services 204-0ubuntu19
  Uname: Linux 3.12.0-custom x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  Date: Sun Nov 17 20:24:41 2013
  MarkForUpload: True
  SourcePackage: systemd
  UpgradeStatus: Upgraded to saucy on 2013-10-17 (31 days ago)

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