Devuan bug report logs - #540
slim fails to get logind session if logout/login cycle is rapid

Package: slim; Maintainer for slim is Devuan Dev Team <devuan-dev@lists.dyne.org>; Source for slim is src:slim.

Reported by: Frank <fbug@xs4all.nl>

Date: Mon, 18 Jan 2021 20:33:01 UTC

Severity: normal

Fixed in version 1.3.6-5.2+devuan1

Done: dak@devuan.org

Forwarded to https://github.com/elogind/elogind/issues/95

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Subject: bug#540: elogind unmounts /run/user/$UID tmpfs filesystem after logging in again
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Date: Thu, 21 Jan 2021 10:00:10 +0000
From: Mark Hindley <mark@hindley.org.uk>
To: Frank <fbug@xs4all.nl>
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Frank,

Thanks. Very helpful.

On Wed, Jan 20, 2021 at 08:15:25PM +0100, Frank wrote:
> Adding "pam.setenv("XDG_SESSION_CLASS", "greeter");" to app.cpp, line 228,
> also works.
> That might be better than adding "export XDG_SESSION_CLASS=greeter" to
> "/etc/init.d/slim".

I am still trying to fully understand the implications of this.

It certainly makes sense for the slim login screen to be greeter class. But,
semantically, I would also expect the subsequent user login to be class user. I
don't yet know what other effects (if any) having the user login as class
greeter has.

Maybe we unset XDG_SESSION_CLASS again before pam.open_session? But maybe that
would no longer fix the issue you came across?

> Writing Display Managers (HOWTO):
> https://www.freedesktop.org/wiki/Software/systemd/writing-display-managers/

This seems to confirm that the user login itself should not be class greeter.

Mark

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Devuan bug report logs - #540 slim fails to get logind session if logout/login cycle is rapid

Devuan bug report logs - #540
slim fails to get logind session if logout/login cycle is rapid