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
  • It's still in beta, isn't it? Apr 22, 2015 at 19:38
  • Release is tomorrow, so yes.
    – s3lph
    Apr 22, 2015 at 19:42
  • I have same problem with Ubuntu 15.04. Very slow boot.
    – Maiwand
    Apr 22, 2015 at 20:42
  • 2
    No not beta, since 16th it was a release candidate, and now it's released.
    – user105939
    Apr 23, 2015 at 5:01

2 Answers 2


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:

 sudo blkid

And then check/fix any thatdo not match

 sudo vi /etc/fstab

On the released version 15.04. I resized the partition, and after that things really slowed down.

 10.588140] audit: type=1400 audit(1430119499.379:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/bin/evince-previewer" pid=370 comm="apparmor_parser"
 [   97.136477] cgroup: new mount options do not match the existing superblock, will be ignored
 [   97.420519] vboxsf: Successfully loaded version 4.3.26_Ubuntu (interface 0x00010004)
 [   97.421318] cfg80211: Calling CRDA to update world regulatory domain
 [   97.436569] cfg80211: World regulatory domain updated:
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  • 5
    @MichaelLindman I believe this is an attempt to answer the question. From what I gather it was a UUID mismatch and the list in /etc/fstab needed to be updated.
    – Seth
    Apr 27, 2015 at 16:18
  • @java4africa you helped me a lot with your answer. How were you even able to relete the cgroup message with the solution. Jul 8, 2016 at 11:22

The problem was caused by bad swap partition reference in /etc/crypttab. It waited 90 seconds before giving up on that. For some reason swap was defined on an non-existing drive, once the line was deleted, everything works fine.

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