[SOLVED] lightdm-session error message after removal of lightdm

rng · 08-27-2017, 06:31 AM

I have Debian-9 stable running well with LXDE desktop. To change display manager, I installed 'lxdm' and removed 'lightdm'. The lxdm login screen appears properly, but on logging in I get an error message similar to following:

Quote:

x session: lightdm-session could not be started. Starting default session.

On pressing OK, the LXDE desktop starts properly and there is no further problem.

Why is this error coming and how can I get rid of it. I tried re-installing lxdm but the error is persisting. Thanks for your help.

ondoho · 08-28-2017, 12:03 AM

the exact/full error message, and where and how and when do you get it?

with this info, i'd say it has something to do with x-session.

maybe update-alternatives can help?

rng · 08-28-2017, 08:19 AM

The exact message was:

Quote:

Xsession: unable to launch "lightdm-xsession" Xsession --- "lightdm-xsession" not found; falling back to default xsession.

I found that "lightdm-xsession" was present in ~/.dmrc file. I deleted this file and uncommented following in /etc/lxdm/lxdm.conf

Quote:

session=/usr/bin/startlxde

This seems to have solved the problem. Now xsession is not trying to launch lighdm-xsession and LXDE is starting immediately on logging.

Which package creates .dmrc? This file is not removed or corrected even after purging lightdm package.

ondoho · 08-28-2017, 02:48 PM

Quote:

Originally Posted by rng

Which package creates .dmrc? This file is not removed or corrected even after purging lightdm package.

yes, that happens regularly for files created by the program.