Bug also affects lxdm 0.4.1-25 for x86_64 (title may suggest otherwise).

actually the problem appeared in 0.4.1-24, likely due to the pam changes.

Fixed in git. (Not tested myself, but commit message says so.)

It's not fixed. I just tested it. Removed old conf file, upgraded to latest version available in repo. Edited conf file to get autologin. Saved. Disabled KDM enabled LXDM. Rebooted. Was greeted with LXDM login screen. Cheers. Andrzej

Strange, because it works for me with lxdm 0.4.1-26. Please remove lxdm package from your system and install it again to make sure that every configuration file is unmodified. Then uncomment the autologin= line in /etc/lxdm/lxdm.conf, set a valid user name, save, and reboot.

If it still broken with lxdm version 0.4.1-26, then report the problem to the upstream developer, and mention that you are using the current git version on 2013-09-11:
https://sourceforge.net/tracker/?limit=25&group_id=180858&atid=894869&status=1&category=1272912

I am already discussing this with dgod. lxdm writes a file /var/lib/lxdm/lxdm.conf that has a wrong session entry (or lxdm handles it incorrectly on autologin, not sure). Please edit or remove this file, then try again.

The way given by Christian Hesse (eworm) only works for one boot, than autologin fails again.

Removing /var/lib/lxdm/lxdm.conf fixes the autologin for 1 reboot. The /var/ conf file gets re-created after second reboot. Creating symlink ln -s /etc/lxdm/lxdm.conf /var/lib/lxdm/lxdm.conf file changes nothing. Symlink gets overwritten. Copying cp /etc/lxdm/lxdm.conf /var/lib/lxdm/lxdm.conf file works for 1 reboot too. System overwrites that file with stuff like this:

[andrzejl@wishthinkpad ~]$ cat /var/lib/lxdm/lxdm.conf
[base]
autologin=andrzejl
greeter=/usr/lib/lxdm/lxdm-greeter-gtk
last_session=__default__
last_lang=

[server]
arg=/usr/bin/X -background vt1

[display]
gtk_theme=Clearlooks
bottom_pane=1
lang=1
keyboard=0
theme=Industrial

[input]

[userlist]
disable=0
white=
black=

While in the same time the working /etc file looks like this:

[andrzejl@wishthinkpad ~]$ cat /etc/lxdm/lxdm.conf
[base]
## uncomment and set autologin username to enable autologin
autologin=andrzejl

## uncomment and set timeout to enable timeout autologin,
## the value should >=5
# timeout=10

## default session or desktop used when no systemwide config
# session=/usr/bin/startlxde

## uncomment and set to set numlock on your keyboard
# numlock=0

## set this if you don't want to put xauth file at ~/.Xauthority
# xauth_path=/tmp

# not ask password for users who have empty password
# skip_password=1

## greeter used to welcome the user
greeter=/usr/lib/lxdm/lxdm-greeter-gtk

[server]
## arg used to start xserver, not fully function
arg=/usr/bin/X -background vt1
# uncomment this if you really want xserver listen to tcp
# tcp_listen=1
# uncoment this if you want reset the xserver after logou
# reset=1

[display]
## gtk theme used by greeter
gtk_theme=Clearlooks

## background of the greeter
# bg=/usr/share/backgrounds/default.png

## if show bottom pane
bottom_pane=1

## if show language select control
lang=1

## if show keyboard layout select control
keyboard=0

## the theme of greeter
theme=Industrial

[input]

[userlist]
## if disable the user list control at greeter
disable=0

## whitelist user
white=

## blacklist user
black=

Cheers.

Andrzej

At least we suffer the same problem. ;)

Try something like this for /var/lib/lxdm/lxdm.conf:

[base]
last_session=xfce
last_lang=

The name for last_session should match the desktop file name from /usr/share/xsessions/. Does that work for now?

Ah, we have a new commit in git that addresses the issue. Going for a test now. :D

I applied the upstream fix in lxdm 0.4.1-27, which solves the problem on my system. Please test it.

No, still not sufficient. I would need some more lines of code... Writing dgod again.

@György Balló: Then you do have a ~/.dmrc that has a valid session defined?

It works for me even without a ~/.dmrc file. (It logs in into LXDE automatically.)

Ah, ok. I do not have LXDE installed, so it still fails for me.

With the attached patch it works for me as well, tries the global setting in /etc/lxdm/lxdm.conf before falling back to default LXDE.

Please send it to dgod for a review, and if he apply it to the git master, then I'll update the package.

Done already. ;)

Hmm, looks like I tested a wrong version... Actually dgod already did fix the problem.
So everything should be ok with 0.4.1-27.

Or does anybody still have objections?

LXDM 0.4.1-27 works fine again here!