Bug#1040920: Acknowledgement (gnome-flashback: Gnome flashback unsets XDG_SESSION_ID)

[Nikolaus Rath]

Hi Alberts,

I believe that way you can get *a session id*. However, the fact that the dbus query returns an error means that the various X11 processes (those started by gnome-session as well as those started by the user) are actually not part of that session (or any session, for that matter).

It's not a matter of determining the session id (even though I first thought that), the problem is that the entire gnome flashback session is not associated with a logind session.

Best,
-Nikolaus

On Mon, 17 Jul 2023, at 21:02, Alberts Muktupāvels wrote:
> Can not you get session id from logind manager using /org/freedesktop/login1/session/auto path?
> 
> dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1/session/auto org.freedesktop.DBus.Properties.Get string:org.freedesktop.login1.Session string:Id
> 
> On Sun, Jul 16, 2023 at 2:27 PM Nikolaus Rath <nikolaus at rath.org> wrote:
>> retitle 1040920 "Gnome flashback breaks out of logind session"
>> thanks
>> 
>> Upon closer examination, the problem is not that GNome flashback unsets XDG_SESSION_ID, but that it breaks out of the active logind session (so unsetting the variable is, in some way, correct).
>> 
>> In other desktop environments (vanilla i3 as well as regular Gnome), the desktop environment is correctly associated with a logind session:
>> 
>> nikratio at vostro ~> dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager.GetSessionByPID uint32:$fish_pid 
>> method return time=1689506142.664977 sender=:1.6 -> destination=:1.1126 serial=2461 reply_serial=2
>>    object path "/org/freedesktop/login1/session/_342"
>> 
>> When running Gnome Flashback, however:
>> 
>> ikratio at vostro ~> dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager.GetSessionByPID uint32:$fish_pid 
>> Error org.freedesktop.login1.NoSessionForPID: PID 858156 does not belong to any known session
>> 
>> 
>> I don't think this is intentional.. or is it?
>> 
>> Best,
>> -Nikolaus
> 
> 
> --
> Alberts Muktupāvels
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