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On Tue, 2026-08-11 at 20:03 +0200, Franck wrote:
> However no change for:
> $ dm-tool switch-to-greeter
> Unable to switch to greeter: GDBus.Error:org.freedesktop.DBus.Error.Failed:
> Failed to switch to greeter
>
> Same error occurs if I use xfce gui 'Switch User'
>
> So Agustin uses Wayland, I use Xorg, but same error.
>
>
> [ Some (useless?) info ]
>
> # lightdm --show-config
> [Seat:*]
> A greeter-session=lightdm-greeter
> B greeter-hide-users=false
> A session-wrapper=/etc/X11/Xsession
>
> Sources:
> A /usr/share/lightdm/lightdm.conf.d/01_debian.conf
> B /etc/lightdm/lightdm.conf.d/10_fr_changes_lightdm.conf
> C /etc/lightdm/lightdm.conf
Thanks. Still confused though.
Can you check the output of various other dm-tool commands, for example:
dm-tool list-seats
Seat0
CanSwitch=true
HasGuestAccount=false
Session1
UserName='corsac'
Does that work for you?
There are multiple commits between 1.32 and 1.33 related to seats:
git log 1.32.0..1.33.0 --format=oneline --grep seat --grep Seat . ':!debian'
f5bafc8a819d3c50d8977ebf833fae6bf0164fb4 Fix CI (#430)
38ad694c40fc30ffe26e06ba0eefdba571d27838 Allow Wayland sessions to start on
seat0 on kernels with no VTs
e520b32f9c4ab67b704874341f95925980349eab Disable user switching if logind says
it isn't supported
c84feb03279e7b1993e5307d4542e02bd5475629 Move supports_multi_session
initialization to init
967f16c230ae270324b7553dff0ab9395adc47e6 Consolidate Seat.setup and Seat.start
for readability
454756fc119705620415528d70ac3c8f6d9c77db Try activating an existing greeter
before checking for switch support
7c0f546992c73aed50d741deb594ad5e74f078e0 Improve debug logging when
seat_switch_to_greeter fails
8493ec0a100c2bfcc399bfe5ccd2132eef78cd80 Use systemd-logind to discover active
session on non-seat0 seats
abf43606f09cb4e340597b407d2fe3b1cb64d5eb tests: New FENCE script command to
ensure event order
dcd37d9548049a9764a4286dd238f6731826e8ee Initialize WaylandSessionPrivate.vt to
-1
75bf8fb062e3f409d6252449dae631440aa95b72 x-server: Avoid reusing the local X
server if the hostname has changed
One another thing that comes to mind: do you use systemd/logind? What's the
output of loginctl?
Regards,
- --
Yves-Alexis
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