I installed KDE neon User Edition 5.15, and setup a multi-seat system on my computer. My system have three seats: seat0, seat-1, seat-2.
I can login on the seat0, but the X server may crashed some time.
I can login on the seat-1, but ksmserver crashed when I clicked on [Leave] menu.
How can I debug the ksmserver?

1)
could You please show this for all of Your 3 seats:

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$ loginctl seat-status seat0 | grep -B 1 -i master | sed -E 's/^[ \t]+//'

├─/sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0
│ [MASTER] pci:0000:02:00.0
│ └─/sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/drm/card0
│   [MASTER] drm:card0
├─/sys/devices/platform/efi-framebuffer.0/graphics/fb0
│ [MASTER] graphics:fb0 "EFI VGA"



I'm just curious.

2)
If something crashed: Are there any core-dump files ("*.core")?

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loginctl seat-status seat0 | grep -B 1 -i master | sed -E 's/^[ \t]+//'
├─/sys/devices/pci0000:00/0000:00:02.0/drm/card0
│ [MASTER] drm:card0
│ ├─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1
│ │ [MASTER] drm:card0-DP-1
│ ├─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-1
│ │ [MASTER] drm:card0-HDMI-A-1
│ └─/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-2
│   [MASTER] drm:card0-HDMI-A-2
--
├─/sys/devices/pci0000:00/0000:00:02.0/graphics/fb1
│ [MASTER] graphics:fb1 "inteldrmfb"


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loginctl seat-status seat-1 | grep -B 1 -i master | sed -E 's/^[ \t]+//'
├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1
│ [MASTER] drm:card1
│ ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1/card1-DP-2
│ │ [MASTER] drm:card1-DP-2
│ ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1/card1-DVI-D-1
│ │ [MASTER] drm:card1-DVI-D-1
│ └─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1/card1-HDMI-A-3
│   [MASTER] drm:card1-HDMI-A-3
--
├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/graphics/fb0
│ [MASTER] graphics:fb0 "amdgpudrmfb"


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loginctl seat-status seat-2 | grep -B 1 -i master | sed -E 's/^[ \t]+//'
├─/sys/devices/pci0000:00/0000:00:01.1/0000:02:00.0/drm/card2
│ [MASTER] drm:card2
│ ├─/sys/devices/pci0000:00/0000:00:01.1/0000:02:00.0/drm/card2/card2-DP-3
│ │ [MASTER] drm:card2-DP-3
│ ├─/sys/devices/pci0000:00/0000:00:01.1/0000:02:00.0/drm/card2/card2-DVI-D-2
│ │ [MASTER] drm:card2-DVI-D-2
│ └─/sys/devices/pci0000:00/0000:00:01.1/0000:02:00.0/drm/card2/card2-HDMI-A-4
│   [MASTER] drm:card2-HDMI-A-4
--
├─/sys/devices/pci0000:00/0000:00:01.1/0000:02:00.0/graphics/fb2
│ [MASTER] graphics:fb2 "amdgpudrmfb"


I can't find any core-dump files.

Try this:

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$ sudo gdb -p `pgrep ksmserver`


It seen that this problem is cause by sddm failed to register "/org/freedesktop/DisplayManager/Seat-1" to dbus by using QDBusConnection::registerObject().
I change my seat name from seat-1 to seat_1, plasmashell wouldn't crash any more.
Maybe sddm need to improve.

And after upgrade xserver-xorg to hwe version, xserver don't crash any more.
Maybe xserver-xorg-input-libinput-hwe-18.04 fixed somethings.

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$ man loginctl | grep -A 1 -B 1 'names may consist'

           attach at least one graphics card to a previously unused seat name. Seat
           names may consist only of a–z, A–Z, 0–9, "-" and "_" and must be prefixed
           with "seat". To drop assignment of a device to a specific seat, just



Maybe, someone did use the wrong 'hyphen' in seat-naming:

'-' ==> 'minus' minus-key
'–' ==> 'endash' AltGr+minus
'—' ==> 'emdash' Shift-AltGr+minus

NoNameNoBlame wrote:

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$ man loginctl | grep -A 1 -B 1 'names may consist'

           attach at least one graphics card to a previously unused seat name. Seat
           names may consist only of a–z, A–Z, 0–9, "-" and "_" and must be prefixed
           with "seat". To drop assignment of a device to a specific seat, just



Maybe, someone did use the wrong 'hyphen' in seat-naming:

'-' ==> 'minus' minus-key
'–' ==> 'endash' AltGr+minus
'—' ==> 'emdash' Shift-AltGr+minus

I don't think so. This is my system log:

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Mar 25 20:32:15 MyStation systemd[1]: Started Login Service.
Mar 25 20:32:15 MyStation systemd[1]: Starting Simple Desktop Display Manager...
Mar 25 20:32:15 MyStation systemd[1]: Started Simple Desktop Display Manager.
Mar 25 20:32:15 MyStation sddm[972]: Initializing...
Mar 25 20:32:15 MyStation sddm[972]: Logind interface found
Mar 25 20:32:15 MyStation sddm[972]: Starting...
Mar 25 20:32:15 MyStation sddm[972]: Adding new display on vt 1 ...
Mar 25 20:32:15 MyStation sddm[972]: Loading theme configuration from ""
Mar 25 20:32:15 MyStation sddm[972]: Display server starting...
Mar 25 20:32:15 MyStation sddm[972]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{badd4d1b-fe17-411b-8021-45aca0772a16} -background none -noreset -displayfd 17 -seat seat-1
Mar 25 20:32:15 MyStation avahi-daemon[815]: Server startup complete. Host name is DevStation.local. Local service cookie is 2862460426.
Mar 25 20:32:15 MyStation sddm[972]: Setting default cursor
Mar 25 20:32:15 MyStation sddm[972]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 25 20:32:15 MyStation sddm[972]: Display server started.
Mar 25 20:32:15 MyStation sddm[972]: Socket server starting...
Mar 25 20:32:15 MyStation sddm[972]: Socket server started.
Mar 25 20:32:15 MyStation sddm[972]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 25 20:32:15 MyStation sddm[972]: Greeter starting...
Mar 25 20:32:15 MyStation sddm[972]: Adding cookie to "/var/run/sddm/{badd4d1b-fe17-411b-8021-45aca0772a16}"
Mar 25 20:32:15 MyStation sddm[972]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat-1"
Mar 25 20:32:15 MyStation sddm[972]: QDBusObjectPath: invalid path "/org/freedesktop/DisplayManager/Seat-1"
Mar 25 20:32:15 MyStation sddm[972]: Adding new display on vt 1 ...
Mar 25 20:32:15 MyStation sddm[972]: Loading theme configuration from ""
Mar 25 20:32:15 MyStation sddm[972]: Display server starting...
Mar 25 20:32:15 MyStation sddm[972]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{06366869-4f9e-48aa-9ddd-fb0a0f621d73} -background none -noreset -displayfd 23 -seat seat-2
Mar 25 20:32:15 MyStation sddm-helper[995]: [PAM] Starting...
Mar 25 20:32:15 MyStation sddm-helper[995]: [PAM] Authenticating...
Mar 25 20:32:15 MyStation sddm-helper[995]: [PAM] returning.
Mar 25 20:32:16 MyStation sddm[972]: Setting default cursor
Mar 25 20:32:16 MyStation sddm[972]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 25 20:32:16 MyStation sddm[972]: Display server started.
Mar 25 20:32:16 MyStation sddm[972]: Socket server starting...
Mar 25 20:32:16 MyStation sddm[972]: Socket server started.
Mar 25 20:32:16 MyStation sddm[972]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 25 20:32:16 MyStation sddm[972]: Greeter starting...
Mar 25 20:32:16 MyStation sddm[972]: Adding cookie to "/var/run/sddm/{06366869-4f9e-48aa-9ddd-fb0a0f621d73}"
Mar 25 20:32:16 MyStation sddm[972]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat-2"
Mar 25 20:32:16 MyStation sddm[972]: QDBusObjectPath: invalid path "/org/freedesktop/DisplayManager/Seat-2"
Mar 25 20:32:16 MyStation sddm[972]: Adding new display on vt 1 ...
Mar 25 20:32:16 MyStation sddm[972]: Loading theme configuration from ""
Mar 25 20:32:16 MyStation sddm[972]: Display server starting...
Mar 25 20:32:16 MyStation sddm[972]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{c74adb1d-c648-4629-b4b0-5eceff241c1a} -background none -noreset -displayfd 35 -seat seat0 vt1
Mar 25 20:32:16 MyStation sddm-helper[1019]: [PAM] Starting...
Mar 25 20:32:16 MyStation sddm-helper[1019]: [PAM] Authenticating...
Mar 25 20:32:16 MyStation sddm-helper[1019]: [PAM] returning.
Mar 25 20:32:16 MyStation sddm[972]: Setting default cursor
Mar 25 20:32:16 MyStation sddm[972]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 25 20:32:16 MyStation sddm[972]: Display server started.
Mar 25 20:32:16 MyStation sddm[972]: Socket server starting...
Mar 25 20:32:16 MyStation sddm[972]: Socket server started.
Mar 25 20:32:16 MyStation sddm[972]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 25 20:32:16 MyStation sddm[972]: Greeter starting...
Mar 25 20:32:16 MyStation sddm[972]: Adding cookie to "/var/run/sddm/{c74adb1d-c648-4629-b4b0-5eceff241c1a}"
Mar 25 20:32:16 MyStation sddm[972]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat0"
Mar 25 20:32:16 MyStation sddm-helper[1019]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 25 20:32:16 MyStation sddm-helper[995]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 25 20:32:16 MyStation sddm-helper[1019]: pam_systemd(sddm-greeter:session): Ignoring vtnr 1 for seat-2 which is not seat0
Mar 25 20:32:16 MyStation sddm-helper[995]: pam_systemd(sddm-greeter:session): Ignoring vtnr 1 for seat-1 which is not seat0
Mar 25 20:32:16 MyStation sddm-helper[1033]: [PAM] Starting...
Mar 25 20:32:16 MyStation sddm-helper[1033]: [PAM] Authenticating...
Mar 25 20:32:16 MyStation sddm-helper[1033]: [PAM] returning.
Mar 25 20:32:16 MyStation sddm-helper[1033]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 25 20:32:16 MyStation systemd[1]: Created slice User Slice of sddm.
Mar 25 20:32:16 MyStation systemd[1]: Starting User Manager for UID 116...
Mar 25 20:32:16 MyStation systemd-logind[814]: New session 1 of user sddm.
Mar 25 20:32:16 MyStation systemd[1]: Started Session 1 of user sddm.
Mar 25 20:32:16 MyStation systemd[1036]: pam_unix(systemd-user:session): session opened for user sddm by (uid=0)
Mar 25 20:32:16 MyStation systemd-logind[814]: New session 2 of user sddm.
Mar 25 20:32:16 MyStation systemd[1]: Started Session 2 of user sddm.
Mar 25 20:32:16 MyStation systemd-logind[814]: New session 3 of user sddm.
Mar 25 20:32:16 MyStation systemd[1]: Started Session 3 of user sddm.


Could You please post Your 3-seat output for this command?

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$ \ps -Ae -o command | grep X | grep -v grep

/usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{57880f8d-8dad-4898-9bd8-a14eed16e0de} -background none -noreset -displayfd 18 -seat seat0 vt1



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Mar 27 19:51:49 MyStation systemd[1]: Started Login Service.
Mar 27 19:51:49 MyStation systemd[1]: Starting Simple Desktop Display Manager...
Mar 27 19:51:49 MyStation systemd[1]: Started Simple Desktop Display Manager.
Mar 27 19:51:49 MyStation sddm[954]: Initializing...
Mar 27 19:51:49 MyStation sddm[954]: Logind interface found
Mar 27 19:51:49 MyStation sddm[954]: Starting...
Mar 27 19:51:49 MyStation sddm[954]: Adding new display on vt 1 ...
Mar 27 19:51:49 MyStation sddm[954]: Loading theme configuration from ""
Mar 27 19:51:49 MyStation sddm[954]: Display server starting...
Mar 27 19:51:49 MyStation sddm[954]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{791716cf-840d-4ecf-8b1c-c5548fe9e62c} -background none -noreset -displayfd 17 -seat seat0 vt1
Mar 27 19:51:49 MyStation avahi-daemon[851]: Server startup complete. Host name is MyStation.local. Local service cookie is 2593410480.
Mar 27 19:51:49 MyStation sddm[954]: Setting default cursor
Mar 27 19:51:49 MyStation sddm[954]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 27 19:51:49 MyStation sddm[954]: Display server started.
Mar 27 19:51:49 MyStation sddm[954]: Socket server starting...
Mar 27 19:51:49 MyStation sddm[954]: Socket server started.
Mar 27 19:51:49 MyStation sddm[954]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 27 19:51:49 MyStation sddm[954]: Greeter starting...
Mar 27 19:51:49 MyStation sddm[954]: Adding cookie to "/var/run/sddm/{791716cf-840d-4ecf-8b1c-c5548fe9e62c}"
Mar 27 19:51:49 MyStation sddm[954]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat0"
Mar 27 19:51:49 MyStation sddm[954]: Adding new display on vt 1 ...
Mar 27 19:51:49 MyStation sddm[954]: Loading theme configuration from ""
Mar 27 19:51:49 MyStation sddm[954]: Display server starting...
Mar 27 19:51:49 MyStation sddm[954]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{ce5da977-eb54-4080-91e3-ec92c3089ef2} -background none -noreset -displayfd 23 -seat seat-2
Mar 27 19:51:49 MyStation sddm-helper[967]: [PAM] Starting...
Mar 27 19:51:49 MyStation sddm-helper[967]: [PAM] Authenticating...
Mar 27 19:51:49 MyStation sddm-helper[967]: [PAM] returning.
Mar 27 19:51:50 MyStation sddm[954]: Setting default cursor
Mar 27 19:51:50 MyStation sddm[954]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 27 19:51:50 MyStation sddm[954]: Display server started.
Mar 27 19:51:50 MyStation sddm[954]: Socket server starting...
Mar 27 19:51:50 MyStation sddm[954]: Socket server started.
Mar 27 19:51:50 MyStation sddm[954]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 27 19:51:50 MyStation sddm[954]: Greeter starting...
Mar 27 19:51:50 MyStation sddm[954]: Adding cookie to "/var/run/sddm/{ce5da977-eb54-4080-91e3-ec92c3089ef2}"
Mar 27 19:51:50 MyStation sddm[954]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat-2"
Mar 27 19:51:50 MyStation sddm[954]: QDBusObjectPath: invalid path "/org/freedesktop/DisplayManager/Seat-2"
Mar 27 19:51:50 MyStation sddm[954]: Adding new display on vt 1 ...
Mar 27 19:51:50 MyStation sddm[954]: Loading theme configuration from ""
Mar 27 19:51:50 MyStation sddm[954]: Display server starting...
Mar 27 19:51:50 MyStation sddm[954]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{1d14cd43-b7ee-4ff0-ace5-af23b05558e2} -background none -noreset -displayfd 35 -seat seat-1
Mar 27 19:51:50 MyStation sddm-helper[991]: [PAM] Starting...
Mar 27 19:51:50 MyStation sddm-helper[991]: [PAM] Authenticating...
Mar 27 19:51:50 MyStation sddm-helper[991]: [PAM] returning.
Mar 27 19:51:50 MyStation sddm[954]: Setting default cursor
Mar 27 19:51:50 MyStation sddm[954]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 27 19:51:50 MyStation sddm[954]: Display server started.
Mar 27 19:51:50 MyStation sddm[954]: Socket server starting...
Mar 27 19:51:50 MyStation sddm[954]: Socket server started.
Mar 27 19:51:50 MyStation sddm[954]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 27 19:51:50 MyStation sddm[954]: Greeter starting...
Mar 27 19:51:50 MyStation sddm[954]: Adding cookie to "/var/run/sddm/{1d14cd43-b7ee-4ff0-ace5-af23b05558e2}"
Mar 27 19:51:50 MyStation sddm[954]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat-1"
Mar 27 19:51:50 MyStation sddm[954]: QDBusObjectPath: invalid path "/org/freedesktop/DisplayManager/Seat-1"
Mar 27 19:51:50 MyStation sddm-helper[967]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 27 19:51:50 MyStation sddm-helper[991]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 27 19:51:50 MyStation sddm-helper[991]: pam_systemd(sddm-greeter:session): Ignoring vtnr 1 for seat-2 which is not seat0
Mar 27 19:51:50 MyStation sddm-helper[1015]: [PAM] Starting...
Mar 27 19:51:50 MyStation sddm-helper[1015]: [PAM] Authenticating...
Mar 27 19:51:50 MyStation sddm-helper[1015]: [PAM] returning.
Mar 27 19:51:50 MyStation sddm-helper[1015]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 27 19:51:50 MyStation sddm-helper[1015]: pam_systemd(sddm-greeter:session): Ignoring vtnr 1 for seat-1 which is not seat0
Mar 27 19:51:50 MyStation systemd[1]: Created slice User Slice of sddm.
Mar 27 19:51:50 MyStation systemd[1]: Starting User Manager for UID 116...
Mar 27 19:51:50 MyStation systemd-logind[847]: New session 1 of user sddm.
Mar 27 19:51:50 MyStation systemd[1]: Started Session 1 of user sddm.
Mar 27 19:51:50 MyStation systemd-logind[847]: New session 2 of user sddm.
Mar 27 19:51:50 MyStation systemd[1]: Started Session 2 of user sddm.
Mar 27 19:51:50 MyStation systemd[1018]: pam_unix(systemd-user:session): session opened for user sddm by (uid=0)
Mar 27 19:51:50 MyStation systemd-logind[847]: New session 3 of user sddm.
Mar 27 19:51:50 MyStation systemd[1]: Started Session 3 of user sddm.
Mar 27 19:51:50 MyStation systemd[1018]: Listening on GnuPG cryptographic agent and passphrase cache (restricted).
Mar 27 19:51:50 MyStation systemd[1018]: Listening on GnuPG network certificate management daemon.
Mar 27 19:51:50 MyStation systemd[1018]: Listening on GnuPG cryptographic agent and passphrase cache.
Mar 27 19:51:50 MyStation systemd[1018]: Listening on GnuPG cryptographic agent (ssh-agent emulation).
Mar 27 19:51:50 MyStation systemd[1018]: Listening on GnuPG cryptographic agent and passphrase cache (access for web browsers).
Mar 27 19:51:50 MyStation systemd[1018]: Reached target Sockets.
Mar 27 19:51:50 MyStation systemd[1018]: Reached target Timers.
Mar 27 19:51:50 MyStation systemd[1018]: Reached target Paths.
Mar 27 19:51:50 MyStation systemd[1018]: Reached target Basic System.
Mar 27 19:51:50 MyStation systemd[1018]: Reached target Default.
Mar 27 19:51:50 MyStation systemd[1018]: Startup finished in 14ms.
Mar 27 19:51:50 MyStation systemd[1]: Started User Manager for UID 116.
Mar 27 19:51:50 MyStation sddm[954]: Greeter session started successfully
Mar 27 19:51:50 MyStation sddm[954]: Greeter session started successfully
Mar 27 19:51:50 MyStation sddm[954]: Greeter session started successfully


Code: Select all

ps -Ae -o command | grep X | grep -v grep   
/usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{791716cf-840d-4ecf-8b1c-c5548fe9e62c} -background none -noreset -displayfd 17 -seat seat0 vt1
/usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{ce5da977-eb54-4080-91e3-ec92c3089ef2} -background none -noreset -displayfd 23 -seat seat-2
/usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{1d14cd43-b7ee-4ff0-ace5-af23b05558e2} -background none -noreset -displayfd 35 -seat seat-1


I think, two of them are missing a "vt<number>"-parameter.

That's why I asked. But I couldn't tell before.

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Mar 27 20:01:45 MyStation systemd[1]: Started Login Service.
Mar 27 20:01:45 MyStation systemd[1]: Starting Simple Desktop Display Manager...
Mar 27 20:01:45 MyStation systemd[1]: Started Simple Desktop Display Manager.
Mar 27 20:01:45 MyStation sddm[960]: Initializing...
Mar 27 20:01:45 MyStation sddm[960]: Logind interface found
Mar 27 20:01:45 MyStation sddm[960]: Starting...
Mar 27 20:01:45 MyStation sddm[960]: Adding new display on vt 1 ...
Mar 27 20:01:45 MyStation sddm[960]: Loading theme configuration from ""
Mar 27 20:01:45 MyStation sddm[960]: Display server starting...
Mar 27 20:01:45 MyStation sddm[960]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{df313bac-99d8-4daa-af78-dd1eea4d8e61} -background none -noreset -displayfd 17 -seat seat2
Mar 27 20:01:45 MyStation avahi-daemon[829]: Server startup complete. Host name is MyStation.local. Local service cookie is 3817040233.
Mar 27 20:01:46 MyStation sddm[960]: Setting default cursor
Mar 27 20:01:46 MyStation sddm[960]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 27 20:01:46 MyStation sddm[960]: Display server started.
Mar 27 20:01:46 MyStation sddm[960]: Socket server starting...
Mar 27 20:01:46 MyStation sddm[960]: Socket server started.
Mar 27 20:01:46 MyStation sddm[960]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 27 20:01:46 MyStation sddm[960]: Greeter starting...
Mar 27 20:01:46 MyStation sddm[960]: Adding cookie to "/var/run/sddm/{df313bac-99d8-4daa-af78-dd1eea4d8e61}"
Mar 27 20:01:46 MyStation sddm[960]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat2"
Mar 27 20:01:46 MyStation sddm[960]: Adding new display on vt 1 ...
Mar 27 20:01:46 MyStation sddm[960]: Loading theme configuration from ""
Mar 27 20:01:46 MyStation sddm[960]: Display server starting...
Mar 27 20:01:46 MyStation sddm[960]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{9b05f94a-8d31-41ea-a56b-39fe6c59fe37} -background none -noreset -displayfd 23 -seat seat_1
Mar 27 20:01:46 MyStation sddm-helper[984]: [PAM] Starting...
Mar 27 20:01:46 MyStation sddm-helper[984]: [PAM] Authenticating...
Mar 27 20:01:46 MyStation sddm-helper[984]: [PAM] returning.
Mar 27 20:01:46 MyStation sddm[960]: Setting default cursor
Mar 27 20:01:46 MyStation sddm[960]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 27 20:01:46 MyStation sddm[960]: Display server started.
Mar 27 20:01:46 MyStation sddm[960]: Socket server starting...
Mar 27 20:01:46 MyStation sddm[960]: Socket server started.
Mar 27 20:01:46 MyStation sddm[960]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 27 20:01:46 MyStation sddm[960]: Greeter starting...
Mar 27 20:01:46 MyStation sddm[960]: Adding cookie to "/var/run/sddm/{9b05f94a-8d31-41ea-a56b-39fe6c59fe37}"
Mar 27 20:01:46 MyStation sddm[960]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat_1"
Mar 27 20:01:46 MyStation sddm[960]: Adding new display on vt 1 ...
Mar 27 20:01:46 MyStation sddm[960]: Loading theme configuration from ""
Mar 27 20:01:46 MyStation sddm[960]: Display server starting...
Mar 27 20:01:46 MyStation sddm[960]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{8ef1fca4-5a64-4384-a6f9-660a207f5325} -background none -noreset -displayfd 35 -seat seat0 vt1
Mar 27 20:01:46 MyStation sddm-helper[1008]: [PAM] Starting...
Mar 27 20:01:46 MyStation sddm-helper[1008]: [PAM] Authenticating...
Mar 27 20:01:46 MyStation sddm-helper[1008]: [PAM] returning.
Mar 27 20:01:46 MyStation sddm[960]: Setting default cursor
Mar 27 20:01:46 MyStation sddm[960]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Mar 27 20:01:46 MyStation sddm[960]: Display server started.
Mar 27 20:01:46 MyStation sddm[960]: Socket server starting...
Mar 27 20:01:46 MyStation sddm[960]: Socket server started.
Mar 27 20:01:46 MyStation sddm[960]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Mar 27 20:01:46 MyStation sddm[960]: Greeter starting...
Mar 27 20:01:46 MyStation sddm[960]: Adding cookie to "/var/run/sddm/{8ef1fca4-5a64-4384-a6f9-660a207f5325}"
Mar 27 20:01:46 MyStation sddm[960]: THISISMYDEBUG:  DisplayManagerSeat () register  "/org/freedesktop/DisplayManager/Seat0"
Mar 27 20:01:46 MyStation sddm-helper[984]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 27 20:01:46 MyStation sddm-helper[1008]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 27 20:01:46 MyStation sddm-helper[984]: pam_systemd(sddm-greeter:session): Ignoring vtnr 1 for seat2 which is not seat0
Mar 27 20:01:46 MyStation sddm-helper[1008]: pam_systemd(sddm-greeter:session): Ignoring vtnr 1 for seat_1 which is not seat0
Mar 27 20:01:46 MyStation sddm-helper[1021]: [PAM] Starting...
Mar 27 20:01:46 MyStation sddm-helper[1021]: [PAM] Authenticating...
Mar 27 20:01:46 MyStation sddm-helper[1021]: [PAM] returning.
Mar 27 20:01:46 MyStation sddm-helper[1021]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mar 27 20:01:46 MyStation systemd[1]: Created slice User Slice of sddm.
Mar 27 20:01:46 MyStation systemd[1]: Starting User Manager for UID 116...
Mar 27 20:01:46 MyStation systemd-logind[854]: New session 1 of user sddm.
Mar 27 20:01:46 MyStation systemd[1]: Started Session 1 of user sddm.
Mar 27 20:01:46 MyStation systemd[1024]: pam_unix(systemd-user:session): session opened for user sddm by (uid=0)
Mar 27 20:01:46 MyStation systemd-logind[854]: New session 2 of user sddm.
Mar 27 20:01:46 MyStation systemd[1]: Started Session 2 of user sddm.
Mar 27 20:01:46 MyStation systemd-logind[854]: New session 3 of user sddm.
Mar 27 20:01:46 MyStation systemd[1]: Started Session 3 of user sddm.
Mar 27 20:01:46 MyStation systemd[1024]: Reached target Paths.
Mar 27 20:01:46 MyStation systemd[1024]: Reached target Timers.
Mar 27 20:01:46 MyStation systemd[1024]: Listening on GnuPG cryptographic agent and passphrase cache.
Mar 27 20:01:46 MyStation systemd[1024]: Listening on GnuPG cryptographic agent (ssh-agent emulation).
Mar 27 20:01:46 MyStation systemd[1024]: Listening on GnuPG network certificate management daemon.
Mar 27 20:01:46 MyStation systemd[1024]: Listening on GnuPG cryptographic agent and passphrase cache (access for web browsers).
Mar 27 20:01:46 MyStation systemd[1024]: Listening on GnuPG cryptographic agent and passphrase cache (restricted).
Mar 27 20:01:46 MyStation systemd[1024]: Reached target Sockets.
Mar 27 20:01:46 MyStation systemd[1024]: Reached target Basic System.
Mar 27 20:01:46 MyStation systemd[1024]: Reached target Default.
Mar 27 20:01:46 MyStation systemd[1024]: Startup finished in 13ms.
Mar 27 20:01:46 MyStation systemd[1]: Started User Manager for UID 116.
Mar 27 20:01:46 MyStation sddm[960]: Greeter session started successfully
Mar 27 20:01:46 MyStation sddm[960]: Greeter session started successfully
Mar 27 20:01:46 MyStation sddm[960]: Greeter session started successfully


Code: Select all

ps -Ae -o command | grep X | grep -v grep
1:178:/usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{df313bac-99d8-4daa-af78-dd1eea4d8e61} -background none -noreset -displayfd 17 -seat seat2
2:180:/usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{9b05f94a-8d31-41ea-a56b-39fe6c59fe37} -background none -noreset -displayfd 23 -seat seat_1
3:203:/usr/lib/xorg/Xorg -nolisten tcp -auth /var/run/sddm/{3760d765-6648-4dcc-b555-164c5ab0b711} -background none -noreset -displayfd 36 -seat seat0 vt1


All thing is OK!