This still happens in 16.04 LST! As it was described several times above the shutdown process somehow blocks/gets in a deadlock when un-mounting the swap partitions. I did not understood exactly what happens but the recovery console clearly shows that the swap space is still on and vailable and there are four .swap jobs "running" (although I have a single swap partition).
PS: The "Fix Released" status suggest for me that some work was done to fix this issue, which supposes that the issue was clearly understood. This is obiviously not the case here. ** Attachment added: "jobs.txt" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1464917/+attachment/4649397/+files/jobs.txt -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1464917 Title: reboot hangs at 'Reached target Shutdown' Status in systemd: New Status in systemd package in Ubuntu: Fix Released Bug description: This bug is resolved. Do not follow up to this bug. Shutdown bugs are specific to the software installed and its configuration. If you are experiencing a shutdown hang, please file a separate bug report and follow the debugging instructions described in the "Debugging boot/shutdown problems" section of /usr/share/doc/systemd/README.Debian.gz to check if there are any hanging jobs at shutdown. Capturing a screen photo of "journalctl -b" in the rescue shell might be enlightening. [Original report] I rebooted my 15.04 system, and found it hanging indefinitely at the plymouth shutdown screen. Hitting esc to reveal the console showed a normal set of shutdown messages, ending with 'Reached target Shutdown' (paraphrased from memory). The system never rebooted on its own. I had to use SysRq to finish the shutdown. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: systemd 219-7ubuntu6 ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 Uname: Linux 3.19.0-20-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 CurrentDesktop: Unity Date: Sat Jun 13 11:53:10 2015 InstallationDate: Installed on 2010-09-24 (1723 days ago) InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1) MachineType: LENOVO 2306CTO ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-20-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7 SourcePackage: systemd UpgradeStatus: Upgraded to vivid on 2014-12-06 (189 days ago) dmi.bios.date: 10/25/2013 dmi.bios.vendor: LENOVO dmi.bios.version: G2ET97WW (2.57 ) dmi.board.asset.tag: Not Available dmi.board.name: 2306CTO dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG2ET97WW(2.57):bd10/25/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2306CTO dmi.product.version: ThinkPad X230 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/systemd/+bug/1464917/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
