Arch Linux

the_isz

Member

Registered: 2009-04-14

Posts: 280

LightDM: How to stop non-graphical applications on session logout?

Hi all,

I'm currently moving from XDM to LightDM and have a hard time figuring out how to clean up after myself when my session ends.

Here's the problem:

• I start two non-graphical applications in ~/.xprofile

  • offlineimap

  • ssh-agent

• I want to cleanly kill these when my graphical session ends

What would be the best way to achieve this?

What I tried until now:

• Add ~/.xlogout which does the cleanup

• Create /etc/lightdm/Xsession-mine which calls /etc/lightdm/Xsession and then ~/.xlogout

• Modify /etc/lightdm/lightdm.conf to use /etc/lightdm/Xsession-mine as session wrapper

Result: ~/.xlogout doesn't seem to be called, probably due to exec in Xsession

History:

With XDM I would start my window manager in the foreground (without exec) in ~/.xinitrc and when it returns call my cleanup code.

Thanks in advance for all help and suggestions!

Timo

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,671

Website

Re: LightDM: How to stop non-graphical applications on session logout?

Haven't used lightdm in a long time... does it have a PostLogout function similar to lxdm?
https://wiki.archlinux.org/index.php/Lxdm#Configuration

---

CPU-optimized Linux-ck packages @ Repo-ck  • AUR packages • Zsh and other configs

the_isz

Member

Registered: 2009-04-14

Posts: 280

Re: LightDM: How to stop non-graphical applications on session logout?

Hi graysky,

Haven't used lightdm in a long time... does it have a PostLogout function similar to lxdm?
https://wiki.archlinux.org/index.php/Lxdm#Configuration

it does have something alike:

# session-cleanup-script = Script to run when quitting a user session (runs as root)

However, as the documentation states, this script is run as root, so I can't clean up on a per-user basis (or can I?).

Kind regards,

Timo

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,671

Website

Re: LightDM: How to stop non-graphical applications on session logout?

Not sure... is using lxdm out of the question?  It has this ability via that config file.  If you cannot, perhaps others can help you.

---

CPU-optimized Linux-ck packages @ Repo-ck  • AUR packages • Zsh and other configs

the_isz

Member

Registered: 2009-04-14

Posts: 280

Re: LightDM: How to stop non-graphical applications on session logout?

Hey again,

actually, your first answer got me thinking. I wrote a little script to run as the session-cleanup-script and printed both $(whoami) and $USER. $(whoami) always yields "root", but $USER is either the user currently logging out (yay!) or empty (if I restart lightdm via systemctl).

So I'll just let root run ~/.Xlogout (if it exists) as the user logging out (or nothing if $USER is empty). I think that'll do for my use case.

Thanks for your input!

Kind regards,

Timo