[Pkg-xfce-devel] Bug#683373: Bug#683373: Bug#683373: Bug#683373: lightdm: User switching does not work under GNOME

[Yves-Alexis Perez]

On sam., 2012-08-04 at 15:30 +0200, Jonathan Michalon wrote:
> > So *who* sends to the session bus?
> 
> According to the error popup when called it's gdm's gdmflexiserver.

Ok, so lightdm and gdm “API”s are not compatible. GDM uses session bus
while lightdm uses system bus.
> 
> > > > > Ubuntu ships a gdmflexiserver script doing the --system dbus-send call located
> > > > > in a directory placed at the beginning of PATH which can be considered as an
> > > > > (ugly) workaround. Listening to session bus (if this is standard) may be better.
> > > > > 
> > > > 
> > > > The script is upstream, but I remove it on purpose. But How could
> > > > lightdm listen on the session bus, which is owned by the user, afaict.
> > > 
> > > No idea. But why remove the script, if they think that this is The Right Way™ ?
> > 
> > Because there's no way I'll add /usr/lib/lightdm in $PATH of a user.
> 
> Didn't know there was such an implication, but I agree this is a good reason.
> What about a kind of divert ? There is already a dialog asking which DM we
> prefer, I suppose it may update an alternative alongside modifying the file.

That won't work, see above.
> 
> > > I'm no expert in that area, and as such I may be completely misleading. But as
> > > is I can't use lightdm together with GNOME as I often need to change user.
> > 
> > To be honest, GNOME users aren't my priority here, considering they can
> > use gdm3. I'm more targetting Xfce and non-DE users.
> 
> Seems rational. But I tested lightdm as gdm3 is really buggy… and heavy.

Ok. But then consider lightdm as not supporting user switching :)
-- 
Yves-Alexis
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