TimedLogin in gdm3 makes the screen go black. Can't VT switch.

[Bernhard M]

When using timed login with the configuration

/etc/gdm3/custom.conf
# GDM configuration storage
#
# See /usr/share/gdm/gdm.schemas for a list of available options.

[daemon]
# Uncomment the line below to force the login screen to use Xorg
#WaylandEnable=false

# Enabling automatic login
# AutomaticLoginEnable = true
# AutomaticLogin = user1

# Enabling timed login
#TimedLoginEnable = true
#TimedLogin = tv
#TimedLoginDelay = 10

[security]

[xdmcp]

[chooser]

[debug]
# Uncomment the line below to turn on debugging
# More verbose logs
# Additionally lets the X server dump core if it crashes
#Enable=true

after 10 seconds the screen goes black and only a reboot is possible to get the GUI working again. If canceling the timed login and selecting the same option everything works.

Additional infarmation: tv is a user starting kodi as single app:

/var/lib/AccountsService/users/tv
[InputSource0]
xkb=us

[User]
XSession=kodi
SystemAccount=false

/usr/share/wayland-sessions/kodi.desktop
[Desktop Entry]
Name=Kodi
Comment=This session will start Kodi media center
Exec=kodi-standalone
TryExec=kodi-standalone
Type=Application

[Daniel van Vugt (vanvugt)]

Please:

1. Run this command to send us more information about the system:

   apport-collect 1798640

2. Clarify what you mean by "crashes everything"? Does that refer to "the screen goes black and only a reboot is possible to get the GUI working again"?

[Sebastien Bacher (seb128)]

The configuration you posted in the description doesn't have timed login enabled, but assuming you just uncommented the lines from there. In addition of the info Daniel requested/logs, could you try if you get the issue also login into a standard Ubuntu session or if that's specific to your custom "kodi" one?

[Bernhard M (bmaehr)]

> Clarify what you mean by "crashes everything"? Does that refer to "the screen goes black and only a reboot is possible to get the GUI working again"?

Screen goes black. Even with Ctrl-Alt-Fx I'm not able to switch to an other console to do something on the system -> no possibility to do something for me

> In addition of the info Daniel requested/logs, could you try if you get the issue also login into a standard Ubuntu session or if that's specific to your custom "kodi" one?

I tried the gnome session for the user tv, which should be the default. I get the same result: Black screen, not responding on anything.
Output of ps during the hanging screen:
root@mediacenter:~# ps -A -F | grep tv
tv 4062 1 0 12062 6348 1 01:44 ? 00:00:00 /lib/systemd/systemd --user
tv 4069 4062 0 54135 2764 1 01:44 ? 00:00:00 (sd-pam)
tv 4118 1 0 44775 3940 3 01:44 ? 00:00:00 /usr/bin/gnome-keyring-daemon --daemonize --login

I created 2 apport-files of 4062 and 4069 and attached them. apport-collect is not working for me, because it is not able to find a browser and I cant execute it when the GUI is crashed.

[Sebastien Bacher (seb128)]

Could you include you journalctl log after getting the issue (seems like apport didn't collect it in the files you attached)

[Bernhard M (bmaehr)]

I created a logfile of the failure as requested.

I saw that it is perhaps a timing issue, because one time (out of perhaps 20 tries) today it seamed to work correctly.

[Bernhard M (bmaehr)]

Seams to be fixed with disco.