Comment 101 for bug 1951491

if by non graphical shell you mean a shell you arrive at via a local login,
I would not expect the bug to be present. The bug, as I understand it,
happens when the login process (not the UI) skips some step.
I can't imagine you would encounter this in any "official" login, such as
to a virtual terminal, or via ssh. Because I think the bug happens in the
login process and not the session start process, I have to predict that
using wayland vs xorg sessions would make no difference. \
It is interesting that xrdp works. I don't know how xrdp works as far as
starting sessions goes. But it is actively maintained unlike x2go so it
seems likely to me that it has "modern" log in methods so it may be fine.

I use nomachine workstation server and the most recent version release
notes specifically mention changes to the login process with respect to PAM
handling.
The systemd experts who have looked at this bug, including correspondence
I've had with them outside of this bug report, indicate that the problem
with x2go and nomachine look like a missing PAM step in the login process.
I will upgrade my server soon to check it out

regards
TIm

On Tue, 7 Nov 2023 at 05:16, Richard Brooksby <email address hidden>
wrote:

> Thank you for the clarifications, Tim. For what it's worth, my Ubuntu
> 22 non-graphical shell *does* have DBUS_SESSION_BUS_ADDRESS to the same
> value that appears in a Wayland session
> ("unix:path=/run/user/1000/bus"). So the bug you mention being exposed
> does not occur for me.
>
> It is also set correctly for an RDP (remote desktop) login to a headless
> Ubuntu 22 machine with xrdp installed to provide the session. The
> Firefox snap starts happily in that session.
>
> A local X session started with `startx` also produces a session in which
> the Firefox snap will run.
>
> The only session that breaks Firefox for me is starting Wayland using
> `XDG_SESSION_TYPE=wayland dbus-run-session gnome-session`. I have not
> found any other way to get a Wayland session from the command line.
>
> It's possible this is all evidence of this bug being fixed in Ubuntu 22,
> and all I have is a problem with starting Wayland correctly.
>
> --
> 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
>
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>

--
Tim Richardson