I confirmed that disabling encrypted swap is a work-around for the inability to shut down. I commented out the cryptswap1 entry from /etc/crypttab:
$ diff /etc/crypttab /etc/crypttab~ 1c1 < # cryptswap1 UUID=d1bd47b1-9969-4cf6-bb7e-482a50b41ffa /dev/urandom swap,offset=1024,cipher=aes-xts-plain64 --- > cryptswap1 UUID=d1bd47b1-9969-4cf6-bb7e-482a50b41ffa /dev/urandom > swap,offset=1024,cipher=aes-xts-plain64 I also set /etc/fstab to use the swap partition directly rather than /dev/mapper/cryptswap1: $ diff /etc/fstab /etc/fstab~ 16,17c16,17 < UUID=d1bd47b1-9969-4cf6-bb7e-482a50b41ffa none swap sw 0 0 < #/dev/mapper/cryptswap1 none swap sw 0 0 --- > #UUID=d1bd47b1-9969-4cf6-bb7e-482a50b41ffa none swap sw 0 0 > /dev/mapper/cryptswap1 none swap sw 0 0 On this machine, it seems encrypted swap was not working anyway as per lines in the attached JournalErrors.txt: Jun 18 17:56:14 username-Lemur systemd-cryptsetup[446]: Failed to activate with key file '/dev/urandom': Device or resource busy ... Jun 18 17:56:18 username-Lemur systemd-cryptsetup[446]: Loading of cryptographic parameters failed: Invalid argument Jun 18 17:56:18 username-Lemur systemd-cryptsetup[446]: Failed to activate: Invalid argument Jun 18 17:56:18 username-Lemur systemd[1]: Failed to start Cryptography Setup for cryptswap1. Jun 18 17:56:18 username-Lemur systemd[1]: Dependency failed for Encrypted Volumes. Jun 18 17:56:18 username-Lemur systemd[1]: Dependency failed for dev-mapper-cryptswap1.device. Jun 18 17:56:18 username-Lemur systemd[1]: Dependency failed for /dev/mapper/cryptswap1. Jun 18 17:56:18 username-Lemur systemd[1]: Dependency failed for Swap. Jun 18 17:56:18 username-Lemur systemd[1]: systemd-cryptsetup@cryptswap1.service: Failed with result 'exit-code'. Jun 18 17:56:18 username-Lemur systemd-cryptsetup[805]: Failed to activate with key file '/dev/urandom': Device or resource busy With encrypted swap disabled as per the changes to /etc/crypttab and /etc/fstab, the machine now shuts down as expected even when suspend/resume cycles occur during the user session. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1594035 Title: unable to shut down the system after suspend / resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1594035/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
