[Bug 1951491] Re: Can't run snaps: .slice/session-1.scope is not a snap cgroup

[Tim Richardson]

PS I do not think this is a bug in snap. It is a bug with the way the
session is being setup. I don't know what the bug is, I have spend some
hours trawling through bug reports and following clues (I tried to be
useful). My "spam" on the snapcraft bug was a helpful note directing
readers here, because this is the bug report tracking the actual bug,
whatever it is. That's not spam, that's being a good citizen.

by following bug reports relating to "Activated service
'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1
exited with status 1" I ended up learning about the Xession init files,
in particular  /etc/X11/Xsession.d/20dbus_xdg-runtime

Then I compared env for a local login (which works of course) and a
remote session. The difference which stood out was the value for
DBUS_SESSION_BUS_ADDRESS.

I just copied how that is set in /etc/X11/Xsession.d/20dbus_xdg-runtime
and it works for me now, when I connect to my nomachine workstation
server running on the xubuntu machine.

the session is started with /usr/bin/startxfce4 which is probably very
similar to other remote access sessions.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1951491

Title:
  Can't run snaps: .slice/session-1.scope is not a snap cgroup

Status in snapd package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Confirmed
Status in snapd package in Debian:
  New

Bug description:
  I just upgraded from hirsute to impish using do-release-upgrade. On
  the upgraded system, I can't run either firefox or chromium (both of
  which worked fine under hirsute). Both fail with:

  /user.slice/user-NNN.slice/session-1.scope is not a snap cgroup where
  NNN is my uid

  With firefox, I was able to fix the problem with:

  snap remove --purge firefox
  apt purge firefox
  apt install firefox

  Now firefox works. But I tried the same thing substituting chromium-
  browser for firefox, and it didn't help: chromium fails with the same
  error message.

  I guess there must be something left over from the hirsute version of
  snapd that isn't getting noticed or cleared by the impish version?

  Someone suggested this might be related to bug 1850667, but that bug
  is marked fixed as of a couple months ago, and I just did this upgrade
  today. Also, it doesn't mention the error message I'm seeing.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.10
  Package: snapd 2.53+21.10ubuntu1
  ProcVersionSignature: Ubuntu 5.13.0-21.21-generic 5.13.18
  Uname: Linux 5.13.0-21-generic x86_64
  ApportVersion: 2.20.11-0ubuntu71
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Thu Nov 18 18:12:45 2021
  InstallationDate: Installed on 2020-04-29 (568 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: snapd
  UpgradeStatus: Upgraded to impish on 2021-11-18 (0 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1951491/+subscriptions