After upgrading to 15.04 , one computer is very, very slow to boot -several minutes, instead of ~20sec.
I do not know if this helps:
graphical.target @1min 40.961s └─multi-user.target @1min 40.961s └─kerneloops.service @1min 36.392s +16ms └─network-online.target @1min 36.391s └─network.target @1min 30.948s └─wpa_supplicant.service @1min 31.430s +6ms └─basic.target @1min 30.414s └─sockets.target @1min 30.414s └─acpid.socket @1min 30.414s └─sysinit.target @1min 30.412s └─networking.service @1.941s +49ms └─apparmor.service @1.383s +555ms └─local-fs.target @1.381s └─media-andre-6564\x2d3236.mount @2min 17.386s └─local-fs-pre.target @1.375s └─systemd-remount-fs.service @1.328s +41ms └─systemd-fsck-root.service @1.197s +129ms └─system.slice @324ms └─-.slice @323ms andre@andre-Latitude-E5520:~$ systemd Failed to create root cgroup hierarchy: Permission denied Failed to allocate manager object: Permission denied
I had the same error - it was related to the UUIDs in /etc/fstab. I had resized the disk partition, by deleting the swap partition, and then recreating swap. This caused the swap UUID to change.
List the UUIDs with:
And then check/fix any thatdo not match
On the released version 15.04. I resized the partition, and after that things really slowed down.