[Pkg-xfce-devel] Bug#762211: lightdm crashes on startup, system falls back to console

Patrick Häcker pat_h at web.de
Sat Oct 4 13:36:39 UTC 2014

On Sun, 28 Sep 2014 21:43:08 +0200 Yves-Alexis Perez <corsac at debian.org> 
> > sorry for the delayed reply. I could indeed confirm that the problem is
> > in the config file. Keeping the old config files breaks the upgrade,
> > while installing the new ones has no problem.
> > Here is the offending lightdm.conf:
> > 
> > http://pastebin.com/RmcGJiNj
> A quick look doesn't reveal anything offending, but now that you
> identified the cause you can “bisect” to find the offending line, I
> guess.

I did exactly that, as I have been bitten by that bug, too. The problematic 
line in my setup is
> greeter-session=lightdm-kde-greeter
If it is active, lightdm fails to start, if it is commented, lightdm works. In 
the package's current config file, this line does not exist.

As Fabio Rosciano has the line
> greeter-session=lightdm-greeter
in his config, too, this is very likely the culprit.

The next line
> greeter-hide-users=false
is at the same place and active both in our conf files. Thus I think these 
lines have been created automatically, shipped by an older version or came 
from some tutorial. Therefore it's important, that lightdm can cope with this 
line without crashing, as this will hit more users and some users won't have 
the skill needed to remove a line in a config file when upgrading to Jessie.

Kind regards
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