[Pkg-xfce-devel] Bug#829348: Bug#829348: lightdm: LightDM + MATE: switching users fails, unable to connect to D-Bus

Yves-Alexis Perez corsac at debian.org
Sat Jul 2 20:03:56 UTC 2016

control: tag -1 moreinfo

On sam., 2016-07-02 at 17:57 +0200, Steve Cotton wrote:
> When trying to switch users, the second one can log in, but only gets
> two dialogs, and then the X session terminates.  The errors are "Could
> not connect to session bus: Failed to connect to socket /tmp/dbus-...
> Connection refused" followed by "Could not aquire name on session bus".

I think it might help to have LightDM logs from both attemps
(/var/log/lightdm/*) as well as the .xsession-errors for both.

Also, can the second user login correctly at all? I mean, is it user switching
which is broken (with any second user) or is any login broken with that (and
testldm) user?
> This bug is introduced in 1.18.2-1, it's a workaround to downgrade both
> lightdm and liblightdm-gobject-1-0 to 1.18.1-1 and then reboot.
> Creating a new user "testldm" and trying to log in shows the same
> problem as for the existing accounts.  MATE is the default desktop
> environment on this laptop.

I'm not too sure what change is relevant here. Can you
update /usr/share/lightdm/lightdm.conf.d/01_debian.conf and replace the line
[SeatDefaults] by the line [Seat:*] ? (I don't think it'd change anything
because the previous name should still be working, but just in case).

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