3

I've just updated my Ubuntu 16 to 18.04.1 LTS, upon restart it fails to boot (completely unresponsive). I've tried booting in safe mode and works but I see there is an error on the cgmanager, specifically:

Failed to start Cgroup management daemon. See 'systemctl status cgmanager.service' for details.

Restarting doesn't seem to work. When I checked the cgmanager log (at upstart), the only message I see is:

initctl: Method "NotifyCGroupManagerAddress" with signature "s" on interface "com.ubuntu.Upstart0_6" doesn't exist

I'm not familiar with the upstart process, so my first guess would be that cgmanager failed to be updated with the rest of the packages. I'd like an expert's opinion before venturing there.

2 Answers 2

6

What I found is that the cgmanager package no longer exists in 18.04 (the search https://packages.ubuntu.com/search?searchon=contents&keywords=cgmanager&mode=exactfilename&suite=bionic&arch=any returns an empty result) But the package does not get removed during the upgrade, which is strange.

2
  • In my experience, Ubuntu very seldom uninstalls non-conflicting packages on upgrade with the assumption that the said package is important for the system and assuming that the dependencies are correct, it should continue working just fine. Jan 8, 2019 at 14:20
  • 1
    It seems that cgmanager should have been removed not because it is unsupported but because it will conflict with systemd. For details, see askubuntu.com/a/1108189/50254 Jan 9, 2019 at 7:02
1

after reading what Mikko Rantalainen wrote:

" It seems that cgmanager should have been removed not because it is unsupported but because it will conflict with systemd. For details, see askubuntu.com/a/1108189/50254 – Mikko Rantalainen Jan 9 '19 at 7:02 "

running apt autoremove removed it

2
  • 1
    actually this solves the problem of the question correctly. it is not comment to author, it is my original solution, also giving credit to the source what gave me the idea Feb 15, 2020 at 12:24
  • OK, you get my upvote for that – however, comments are deleted regularly, your answer would greatly benefit if you could edit it and include the details from Mikko’s comments.
    – dessert
    Feb 15, 2020 at 12:36

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .