Public bug reported:
I recently rebooted my computer, and NetworkManager didn't come online.
Snooping dmesg revealed the problem:
[ 16.371556] systemd[1]: Breaking ordering cycle by deleting job
network.target/start
[ 16.371561] systemd[1]: Job network.target/start deleted to break ordering
cycle starting with network-online.target/start
[ 16.371722] systemd[1]: Found ordering cycle on
NetworkManager-wait-online.service/start
[ 16.371727] systemd[1]: Found dependency on NetworkManager.service/start
[ 16.371732] systemd[1]: Found dependency on basic.target/start
[ 16.371736] systemd[1]: Found dependency on sockets.target/start
[ 16.371739] systemd[1]: Found dependency on cups.socket/start
[ 16.371743] systemd[1]: Found dependency on sysinit.target/start
[ 16.371747] systemd[1]: Found dependency on screen-cleanup.service/start
[ 16.371751] systemd[1]: Found dependency on remote-fs.target/start
[ 16.371754] systemd[1]: Found dependency on openafs-client.service/start
[ 16.371758] systemd[1]: Found dependency on network-online.target/start
[ 16.371762] systemd[1]: Found dependency on
NetworkManager-wait-online.service/start
[ 16.371766] systemd[1]: Breaking ordering cycle by deleting job
NetworkManager.service/start
[ 16.371771] systemd[1]: Job NetworkManager.service/start deleted to break
ordering cycle starting with NetworkManager-wait-online.service/start
Manually running `sudo systemctl start NetworkManager` brought it back
online. But there shouldn't be an ordering cycle!
The problem seems to be that sockets wants cups, and then through a
hilarious chain of events we hit openafs-client which obviously needs
network. So for some reason, wants constraints are being honored too
strictly.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: systemd 219-7ubuntu5
ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
Uname: Linux 3.19.0-18-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
Date: Sat Jun 6 15:49:54 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-11-21 (562 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: LENOVO 7762K3U
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-18-generic
root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: Upgraded to vivid on 2015-05-29 (8 days ago)
dmi.bios.date: 02/21/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7SET25WW (1.11 )
dmi.board.name: 7762K3U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr7SET25WW(1.11):bd02/21/2008:svnLENOVO:pn7762K3U:pvrThinkPadX61Tablet:rvnLENOVO:rn7762K3U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7762K3U
dmi.product.version: ThinkPad X61 Tablet
dmi.sys.vendor: LENOVO
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug vivid
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https://bugs.launchpad.net/bugs/1462692
Title:
Ordering cycle on NetworkManager-wait-online.service/start
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