To conclude.
$ loginctl
SESSION UID USER SEAT
1 1000 poma
c3 105 lightdm seat1
c4 105 lightdm seat0
3 sessions listed.
$ ps ax | grep [X]org
1344 ? Sl 0:00 /usr/libexec/Xorg :0 -seat seat1 -sharevts -auth
/var/run/lightdm/root/:0 -nolisten tcp
1347 tty1 Ss+ 0:00 /usr/libexec/Xorg :1 -seat seat0 -auth
/var/run/lightdm/root/:1 -nolisten tcp vt1 -novtswitch
$ grep -i LoadModule /var/log/Xorg.0.log
… (II) LoadModule: "glx"
… (II) LoadModule: "modesetting" <--
… (II) LoadModule: "fbdev"
… (II) UnloadModule: "fbdev"
… (II) LoadModule: "vesa"
… (II) UnloadModule: "vesa"
… (II) LoadModule: "glamoregl"
… (II) LoadModule: "fb"
$ fbset -i -fb /dev/fb1 | grep Name
Name : udldrmfb
$ grep -i LoadModule /var/log/Xorg.1.log
… (II) LoadModule: "glx"
… (II) LoadModule: "nouveau" <--
… (II) LoadModule: "nv"
… (II) UnloadModule: "nv"
… (II) LoadModule: "modesetting"
… (II) LoadModule: "fbdev"
… (II) UnloadModule: "fbdev"
… (II) LoadModule: "vesa"
… (II) UnloadModule: "vesa"
… (II) LoadModule: "dri2"
… (II) LoadModule: "fb"
… (II) LoadModule: "shadowfb"
… (II) UnloadModule: "modesetting"
… (II) LoadModule: "exa"
… (II) LoadModule: "evdev"
$ fbset -i | grep Name
Name : nouveaufb
# Xorg -version
X.Org X Server 1.17.1
Release Date: 2015-02-10
X Protocol Version 11, Revision 0
...
Build ID: xorg-x11-server 1.17.1-12.fc21
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
All in all,
in X.Org X Server 1.17.1 modules are automatically induced in multi-seat
environment,
therefore additional configuration files for Xorg X server are no longer
necessary,
and overall *minimum* lightdm's config is:
~~~~~~~~~~~~~~~~~~~~~
$ lightdm --show-config
[LightDM]
A minimum-vt=1
[SeatDefaults]
A session-wrapper=/etc/X11/xinit/Xsession
~~~~~~~~
Sources:
A /etc/lightdm/lightdm.conf
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
$ lightdm --version
lightdm 1.14.0
That's super cool, isn't it.
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