This is sddm.log after expected crash.
[19:55:07.100] (II) DAEMON: Initializing...
[19:55:07.104] (II) DAEMON: Starting...
[19:55:07.104] (II) DAEMON: Adding new display on vt 7 ...
[19:55:07.104] (II) DAEMON: Display server starting...
[19:55:07.104] (II) DAEMON: Running: /usr/bin/X -nolisten tcp -auth
/var/run/sddm/{3a2e4a8d-d349-4df7-be14-44161c6cd3a4} -background none
-noreset -displayfd 19 vt7
[19:55:07.920] (II) DAEMON: Running display setup script
"/usr/share/sddm/scripts/Xsetup"
[19:55:07.921] (II) DAEMON: Display server started.
[19:55:07.921] (II) DAEMON: Socket server starting...
[19:55:07.921] (II) DAEMON: Socket server started.
[19:55:07.921] (II) DAEMON: Greeter starting...
[19:55:07.922] (II) DAEMON: Adding cookie to
"/var/run/sddm/{3a2e4a8d-d349-4df7-be14-44161c6cd3a4}"
[19:55:07.929] (II) DAEMON: Greeter session started successfully
[19:55:08.036] (II) DAEMON: Message received from greeter: Connect
[19:55:41.464] (WW) DAEMON: Signal received: SIGINT
[19:55:41.464] (WW) DAEMON: Error from greeter session: "Process crashed"
[19:55:41.464] (WW) DAEMON: Auth: sddm-helper crashed (exit code 0)
[19:55:41.464] (WW) DAEMON: Error from greeter session: "Process crashed"
[19:55:41.464] (II) DAEMON: Auth: sddm-helper exited successfully
[19:55:41.464] (II) DAEMON: Greeter stopped.
[19:55:41.464] (II) DAEMON: Socket server stopping...
[19:55:41.464] (II) DAEMON: Socket server stopped.
[19:55:41.464] (II) DAEMON: Display server stopping...
[19:55:41.474] (II) DAEMON: Display server stopped.
[19:55:41.474] (II) DAEMON: Running display stop script
"/usr/share/sddm/scripts/Xstop"
In order to get back to desktop I had to go Ctl + Alt + F1, login in as
root and hard code /etc/X11/default-display-manager back to kdm.
I know that sddm works, at least on some computers, in fact I have
another one with sddm and it works.
Problem is this computer, it did not even want to start with sddm, I had
to turn it off manually and reboot it.
Thank you.
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On 09/17/2015 12:13 PM, Maximiliano Curia wrote:
¡Hola Carlos!
El 2015-09-17 a las 10:32 -0400, Carlos Kosloff escribió:
After setting sddm as default-display-manager in /etc/X11, and
rebooting, I got a completely black screen.
Having to set the default-display-manager in order to start the
display manager is working as intended.
The black screen is clearly not. It could be useful to have just the
sddm related logs of this last error. But there are some known black
screen bugs see the upstream related issues here:
https://github.com/sddm/sddm/labels/crash%2Fwhitescreen
So the next question is, what video card are you using? Which video
driver is that using? Is it showing the mouse cursor in the black screen?
Could you test changing the theme to a simpler one, like maui,
installing the sddm-theme-maui package and setting the current theme
to it in the /etc/sddm.conf file?
If the file is not created simply adding this to it would be enough:
[Theme]
Current=maui
Happy hacking,