Lightdm Login-loop (Missing Xsessions) [Solved]

Tempest002 · 2020-08-26 11:46:31

This is probalby a really noob question.

Recently I installed Arch Linux, with dwm as my standalone window manager. Most of the time I used "startx" to start dwm.
I decided to install lightdm and the lightdm-gtk-greeter and because this is my first linux install and starting dwm as a session directly in "lightdm.conf" didnt work,
I installed "xinit-xsession" from the AUR to simply let lightdm run my ".xinitrc" file.

When I try to log in now the screen goes black and then back to the login-screen again.

I looked at ".xsession-errors" and got this:

/etc/lightdm/Xsession: Zeile 64: /etc/X11/Xsession: Datei oder Verzeichnis nicht gefunden

(sorry for german error messages)

Is there a way to restore Xsesson or prevent lightdm from running it?

Or is there a better way entirely to do this whole startup thing?

Last edited by Tempest002 (2020-08-27 22:50:48)

tucuxi · 2020-08-26 16:28:47

Unless you actually need anything lightdm does, you can just startx from .bash_profile or .zprofile. See https://wiki.archlinux.org/index.php/Xinit.

Tempest002 · 2020-08-26 21:48:53

Thank you for the reply.

Its a simple solution, but I would like to use lightdm if possible. And I would like to learn what the "Xsession" file actually does.

seth · 2020-08-27 06:27:24

I doubt that the particular "error" is related to your situation.

a) write a dwm session file (though the AUR package contains one, I assume you're not using this?)
b) post your xinitrc

Tempest002 · 2020-08-27 12:40:06

Ok, I am certain that my .xinitrc file isnt the problem because startx works as expected.

I tried running lightdm with my .xinitrc file as a session : didnt work
I wrote a dwm.desktop fille in /usr/share/xsessions and set dwm in lightdm.conf : didnt work

And the logs and error-messages im getting dont seem to change, it must be something else.
The Problem is the same every time. I type my correct password, the screen goes black, and then I am back at the login screen.

Postet all of the importand files below, maybe you see something.
lightdm.log: http://ix.io/2voi
dwm.desktop: http://ix.io/2vok
lightdm.conf: http://ix.io/2vol
.xesession-errors: http://ix.io/2voo
.xinitrc: http://ix.io/2vos

seth · 2020-08-27 12:56:03

Lightdm indeed tries to run /etc/lightdm/Xsession /etc/X11/Xsession and fails because /etc/X11/Xsession doesn't exist but is supposed to replace the running process (/etc/lightdm/Xsession) but I don't see why.

[+8.26s] DEBUG: Session pid=453: Running command /etc/lightdm/Xsession /etc/X11/Xsession
[+8.26s] DEBUG: Creating shared data directory /var/lib/lightdm-data/sebi
[+8.26s] DEBUG: Session pid=453: Logging to .xsession-errors
[+8.39s] DEBUG: Activating VT 7
[+8.39s] DEBUG: Activating login1 session 2
[+8.39s] DEBUG: Seat seat0 changes active session to 
[+8.39s] DEBUG: Seat seat0 changes active session to 2
[+8.39s] DEBUG: Session 2 is already active
[+8.43s] DEBUG: Session pid=453: Exited with return value 127

Does it work w/o the autologin stuff?

Tempest002 · 2020-08-27 13:46:41

Good news: With autologin enabled it works.
I tried it with dwm.desktop as well as xinitrc.desktop and both work as an autologin-session.

A few of my bash scripts are broken now but surely I can fix that.

But I am still curious, why does lightdm run the sessions differently with autologin enabled?

Thank you for the help!

seth · 2020-08-27 14:00:15

grep -ir xsession /usr/share/xsessions/
cat /usr/share/xsessions/xinitrc.desktop

Lightdm should™ run "/etc/lightdm/Xsession /usr/bin/xinitrcsession-helper" - maybe it defaults to /etc/X11/Xsession on a bad session service or maybe user-session needs to be an absolute path *shrug*

Arch Linux

#1 2020-08-26 11:46:31

Lightdm Login-loop (Missing Xsessions) [Solved]

#2 2020-08-26 16:28:47

Re: Lightdm Login-loop (Missing Xsessions) [Solved]

#3 2020-08-26 21:48:53

Re: Lightdm Login-loop (Missing Xsessions) [Solved]

#4 2020-08-27 06:27:24

Re: Lightdm Login-loop (Missing Xsessions) [Solved]

#5 2020-08-27 12:40:06

Re: Lightdm Login-loop (Missing Xsessions) [Solved]

#6 2020-08-27 12:56:03

Re: Lightdm Login-loop (Missing Xsessions) [Solved]

#7 2020-08-27 13:46:41

Re: Lightdm Login-loop (Missing Xsessions) [Solved]

#8 2020-08-27 14:00:15

Re: Lightdm Login-loop (Missing Xsessions) [Solved]

Board footer