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

[Tim Richardson]

unconfinded snaps don't have thie problem (that is, --classic snaps), these
bypass all the snap sandboxing and I guess this means they bypass the
controls and restrictions of cgroups. If you want this fixed, you have to
get x2go fixed. Report the bug there.

On Sun, 6 Nov 2022 at 21:05, Luigi Caiazza <1951491 at bugs.launchpad.net>
wrote:

> Same issue here.
>
> My configuration is a fresh install of Ubuntu Mate 22.04 LTS, meant to
> be used both locally and remotely (via X2GO).
>
> From local sessions, I have no anomalies for each application installed
> via snap, so I am sure that the system works like a charm under some
> conditions. In contrast, if I log in from a remote session and I try to
> start almost all applications installed via snap (e.g., Firefox, Brave,
> Arduino IDE), I fall into:
>
> /user.slice/user-1000.slice/session-14.scope is not a snap cgroup
>
> The "strange" thing is that I found an application that works pretty well
> even through remote sessions: Visual Studio Code, installed using this
> command:
> sudo snap install code --classic
>
> I have not yet understood what can make the difference here, but to have
> a full working system I prefer to rely on a sort of bugfixing, rather
> than (permanently) apply some workaround that distorts the behaviour of
> the system.
>
> I am curious to know why Visual Studio Code works (maybe the classic
> confinement?). Please, inform us if you get the point.
>
> Thank you.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1951491
>
> Title:
>   Can't run snaps: .slice/session-1.scope is not a snap cgroup
>
> To manage notifications about this bug go to:
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>

-- 
Tim Richardson

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https://bugs.launchpad.net/bugs/1951491

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

Status in X2Go:
  New
Status in snapd package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Incomplete
Status in x2goserver 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)

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