Bug#821395: systemd: first login attempt with GDM fails when user services are present

Michael Biebl biebl at debian.org
Mon Apr 18 14:13:32 BST 2016

Am 18.04.2016 um 14:48 schrieb David Banks:
> Package: systemd
> Version: 229-4
> Severity: normal
> Having user services defined under ~/.config/systemd/user can cause the initial
> login attempt after a restart to fail.  Only the first login attempt will fail,
> and it will cause a message in syslog thusly
>     Apr 18 11:54:22 motylyok /usr/lib/gdm3/gdm-x-session[1939]: Unable to register display with display manager(II) UnloadModule: "synaptics"
> This is clearly two logs that have been mixed up somehow, but the message
> 'unable to register display with display manager' is the relevant one.
> These symptoms happened while I was using the third-party 'profile-sync-daemon'
> package, so this may be a confounding factor.  This service uses systemd timers.
> Removing these user services instantly resolved the problem.  I don't know why.
> I also have the following message in syslog:
>     Apr 18 13:07:18 motylyok /usr/lib/gdm3/gdm-x-session[2083]: dbus-update-activation-environment: warning: error sending to systemd: org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
> This does not seem to affect the ability to login though.

Do you have dbus-user-session installed?
If not, does it make a difference when you install it?

Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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