<div dir="ltr">I can confirm lightdm greeter leaves some proccesses behind when it's closed (like dbus-launch, dbus-daemon, at-spi-bus-launcher...) They are only definitely terminated when user logs out from that seat.</div><div class="gmail_extra"><br><div class="gmail_quote">2015-07-07 14:10 GMT-03:00 David Herrmann <span dir="ltr"><<a href="mailto:dh.herrmann@gmail.com" target="_blank">dh.herrmann@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi<br> <span class=""><br> On Tue, Jul 7, 2015 at 6:55 PM, Martin Pitt <<a href="mailto:martin.pitt@ubuntu.com">martin.pitt@ubuntu.com</a>> wrote:<br> > Hey David,<br> ><br> > David Herrmann [2015-07-07 18:31 +0200]:<br> >> > Revert "login: re-use VT-sessions if they already exist" - commit 0204c4b<br> >> > <a href="http://cgit.freedesktop.org/systemd/systemd/commit/?id=0204c4b" rel="noreferrer" target="_blank">http://cgit.freedesktop.org/systemd/systemd/commit/?id=0204c4b</a><br> >><br> >> Can someone elaborate what exactly lightdm does here? We really want<br> >> to prevent multiple sessions on the same VT. This is just nasty and<br> >> never made any sense. So I'm really interested why lightdm doesn't<br> >> kill it's manager-session before it starts the new session. Any<br> >> particular reason here?<br> ><br> > I'll let Robert answer with the details, but something I noticed:<br> ><br> > It's not that simple to reproduce, but sometimes it seems the lightdm<br> > "greeter" session (running as user lightdm, where you select user/type<br> > password and so on) doesn't completely terminate, but some processes<br> > stay around in it. Thus the greeter session stays around in state<br> > "Closing", and then the "real" session starts on the same VT.<br> ><br> > I asked the reporter of <a href="https://launchpad.net/bugs/1472259" rel="noreferrer" target="_blank">https://launchpad.net/bugs/1472259</a> to attach<br> > systemd-cgls, so that we can see what's running in the session.<br> <br> </span>So it might indeed just be a race in lightdm. Hmm..<br> Anyway, this patch here should also fix the issue (if it does, I'll<br> commit something proper).<br> <br> Thanks<br> David<br> <br> diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c<br> index 0cc2cdf..bced693 100644<br> --- a/src/login/logind-dbus.c<br> +++ b/src/login/logind-dbus.c<br> @@ -690,8 +690,11 @@ static int method_create_session<br> }<br> <br> manager_get_session_by_pid(m, leader, &session);<br> - if (!session && vtnr > 0 && vtnr < m->seat0->position_count)<br> + if (!session && vtnr > 0 && vtnr < m->seat0->position_count) {<br> session = m->seat0->positions[vtnr];<br> + if (session && session->class == SESSION_GREETER)<br> + session = NULL;<br> + }<br> <span class="im HOEnZb"> if (session) {<br> _cleanup_free_ char *path = NULL;<br> _cleanup_close_ int fifo_fd = -1;<br> </span><div class="HOEnZb"><div class="h5">_______________________________________________<br> systemd-devel mailing list<br> <a href="mailto:systemd-devel@lists.freedesktop.org">systemd-devel@lists.freedesktop.org</a><br> <a href="http://lists.freedesktop.org/mailman/listinfo/systemd-devel" rel="noreferrer" target="_blank">http://lists.freedesktop.org/mailman/listinfo/systemd-devel</a><br> </div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><b>Laércio de Sousa</b><br></div><div style="text-align:center"><div style="text-align:left"><i>Orientador de Informática</i></div><div style="text-align:left"><u>Escola Municipal "Professor Eulálio Gruppi"</u></div><div style="text-align:left"><i>Rua Ismael da Silva Mello, 559, Mogi Moderno</i></div><i><div style="text-align:left"><i>Mogi das Cruzes - SP</i></div><div style="text-align:left"><i>CEP 08717-390</i></div></i></div><div><span style="font-family:arial;font-size:small">Telefone: (11) 4726-8313</span></div></div></div> </div>