LightDm Doesn't Work

danitab · 2021-02-24 22:48:47

I wanted to enable lightdm and start it ,
But when i type

sudo systemctl start lightdm             
[sudo] password for dani: 
Job for lightdm.service failed because the control process exited with error code.
See "systemctl status lightdm.service" and "journalctl -xe" for details.

and command

 journalctl -xe 
Hint: You are currently not seeing messages from other users and the system.
      Users in groups 'adm', 'systemd-journal', 'wheel' can see all messages.
      Pass -q to turn off this notice.
░░ The job identifier is 510.
Feb 25 02:13:33 danial systemd[13988]: app-gnome-gnome\x2dterminal-15879.scope:>
░░ Subject: Unit succeeded
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░ 
░░ The unit UNIT has successfully entered the 'dead' state.
Feb 25 02:13:40 danial sudo[15934]: pam_systemd_home(sudo:account): systemd-hom>
Feb 25 02:13:40 danial sudo[15934]:     dani : TTY=pts/0 ; PWD=/home/dani ; USE>
Feb 25 02:13:40 danial sudo[15934]: pam_unix(sudo:session): session opened for >
Feb 25 02:13:41 danial sudo[15934]: pam_unix(sudo:session): session closed for >
Feb 25 02:13:41 danial gnome-shell[14046]: Failed to use stored monitor configu>
Feb 25 02:13:41 danial gnome-shell[14046]: libinput error: event13 - SYNA7DB5:0>
Feb 25 02:13:41 danial gnome-shell[14046]: See https://wayland.freedesktop.org/>
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting >
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting >
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting >
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting >
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting >
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting >
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting >
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting >
Feb 25 02:13:42 danial gnome-shell[14046]: Window manager warning: Overwriting

I Dont know How to Config It Cause my system resolution is 1920x1680

seth · 2021-02-24 22:57:32

I don't know what your resolution has to do w/ anything, but you're apparently running this from a gnome-shell what means you've reached a graphical.target (and it's likely GDM) so you can't start lightdm and it doesn't make any sense to do so either.

=> What are you *actually* trying to do?

danitab · 2021-02-25 08:10:26

I want to enable lightdm, but it does'nt work.
and when i type

journalctl -xe

It takes me this error

pam_systemd_home(sudo:account): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.

and if you want to know my resolution, its 1920x1080

seth · 2021-02-25 11:38:49

I want to enable lightdm

Well, then you'll have to *enable* it. nb. that most likely you'll have to disable gdm as well (since I assume you've that enabled right now)

It takes me this error

That's not an error but meaningless systemd noise.
Also "journalctl -xe" is useless, "-x" is essentially spam and "-e" just scrolls the pager for you.
If you want to see the system journal (which is going to be relevant for lightdm), you'll have to run "sudo journalctl" or add yourself to the special groups as the command told you…

and if you want to know

No, why?
For some reason your OP stated

I Dont know How to Config It Cause my system resolution is 1920x1680

which seems out of context and makes no obvious sense at all.

danitab · 2021-02-26 08:37:04

OK Look , I want to enable and start lightdm . First

 systemctl enable lightdm
Created symlink /etc/systemd/system/display-manager.service → /usr/lib/systemd/system/lightdm.service.

OK It Works , Second

systemctl start lightdm 
Job for lightdm.service failed because the control process exited with error code.
See "systemctl status lightdm.service" and "journalctl -xe" for details.

I type both of them for details

systemctl status lightdm.service 
● lightdm.service - Light Display Manager
     Loaded: loaded (/usr/lib/systemd/system/lightdm.service; enabled; vendor preset: disabled)
     Active: failed (Result: exit-code) since Fri 2021-02-26 11:54:23 +0330; 1min 46s ago
       Docs: man:lightdm(1)
    Process: 1712 ExecStart=/usr/bin/lightdm (code=exited, status=1/FAILURE)
   Main PID: 1712 (code=exited, status=1/FAILURE)

AND

journalctl -xe 
Failed to use stored monitor configuration: Invalid mode 1680x1050 (59.883251) for monitor 'LGD 0x065a']

I said my resolution is 1920x1080 cause this error is about 1680x1050 ^^^^
and excuse me.. cause my language is not very goor

seth · 2021-02-26 08:56:44

That message is from gnome-shell (and was not visible in the OP)
You cannot start lightdm from a graphical session.

danitab · 2021-02-26 09:20:19

Ok , another problem...... when i reboot and press Alt + Ctrl + F2 to command mode , I Type

 systemctl start lightdm

it works with it theme (I install Theme on my lightdm) but when i type my pass to go to my Gnome , the screen were blacked !! (Oh God You Have A Problem With My Arch)

seth · 2021-02-26 09:44:39

press Alt + Ctrl + F2

likely meas there's another display server on tty1...

You Have A Problem With My Arch

No we don't. Neither a problem nor is it archlinux...

danitab · 2021-02-26 09:55:29

I dont know what should i do ,
and my sentense means God Has A Problem With My Arch

seth · 2021-02-26 12:48:09

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

danitab · 2021-02-26 13:07:57

Output is this

bluetooth.service                        | bluetooth.target.wants
dbus-org.bluez.service                   | system
dbus-org.freedesktop.nm-dispatcher.service | system
dirmngr.socket                           | sockets.target.wants
display-manager.service                  | system
getty@tty1.service                       | getty.target.wants
gpg-agent-browser.socket                 | sockets.target.wants
gpg-agent-extra.socket                   | sockets.target.wants
gpg-agent.socket                         | sockets.target.wants
gpg-agent-ssh.socket                     | sockets.target.wants
NetworkManager.service                   | multi-user.target.wants
NetworkManager-wait-online.service       | network-online.target.wants
p11-kit-server.socket                    | sockets.target.wants
pipewire.socket                          | sockets.target.wants
pulseaudio.socket                        | sockets.target.wants
remote-fs.target                         | multi-user.target.wants
xdg-user-dirs-update.service             | default.target.wants

seth · 2021-02-26 13:10:48

systemctl show display-manager.service

danitab · 2021-02-26 13:17:28

Its 249 lines !!!
so what i have to do with it

Last edited by danitab (2021-02-26 13:18:06)

seth · 2021-02-26 13:19:51

systemctl show display-manager.service | curl -F 'f:1=<-' ix.io

danitab · 2021-02-26 13:24:58

http://ix.io/2QVZ

seth · 2021-02-26 13:28:39

That's lightdm. Since it's eanbled, why do you

press Alt + Ctrl + F2 to command mode , I Type systemctl start lightdm

?

danitab · 2021-02-26 13:32:55

the sreen were blacked each time and i sometimes have to start it by commands (but sometimes it automatically loads)

seth · 2021-02-26 13:34:08

https://wiki.archlinux.org/index.php/Li … TTY_output
https://wiki.archlinux.org/index.php/Ke … _KMS_start

danitab · 2021-02-26 13:46:20

Ok , one of my 2 problems fixed, lightdm automatically loads but when i type my password the screen were blacked and doesnt show my gnome desktop env , and i have to press that keys to go to command mode and stop lightdm and start sddm ,(maybe i have to switch to sddm)

Last edited by danitab (2021-02-26 13:47:52)

seth · 2021-02-26 13:49:02

"gnome" (wayland) or "gnome on xorg" - or both?

danitab · 2021-02-26 13:50:44

i think ,,, there is both of them , but it is on gnome wayland always

seth · 2021-02-26 13:53:37

Try gnome on xorg?

danitab · 2021-02-26 13:57:13

nothning changed !!
i think its the lightdm problem cause sddm is on gnome wayland and it works

seth · 2021-02-26 14:44:51

Please post the complete system journal after a failed attempt to start a gnome session.

danialtabkhi · 2021-02-26 14:56:30

When lightdm loads I inter my password to load my gnome wayland but the sreen were blacked and nothing.. I press Ctrl Alt F2 and

systemctl stop lightdm

and

systemctl start sddm

Then the simple sddm comes and i type my password and gnome loads and i can open firefox and chat with you ,
Thank you
Do you think i have to creat another topic about this problem ???

Last edited by danialtabkhi (2021-02-26 14:57:58)

Arch Linux

#1 2021-02-24 22:48:47

LightDm Doesn't Work

#2 2021-02-24 22:57:32

Re: LightDm Doesn't Work

#3 2021-02-25 08:10:26

Re: LightDm Doesn't Work

#4 2021-02-25 11:38:49

Re: LightDm Doesn't Work

#5 2021-02-26 08:37:04

Re: LightDm Doesn't Work

#6 2021-02-26 08:56:44

Re: LightDm Doesn't Work

#7 2021-02-26 09:20:19

Re: LightDm Doesn't Work

#8 2021-02-26 09:44:39

Re: LightDm Doesn't Work

#9 2021-02-26 09:55:29

Re: LightDm Doesn't Work

#10 2021-02-26 12:48:09

Re: LightDm Doesn't Work

#11 2021-02-26 13:07:57

Re: LightDm Doesn't Work

#12 2021-02-26 13:10:48

Re: LightDm Doesn't Work

#13 2021-02-26 13:17:28

Re: LightDm Doesn't Work

#14 2021-02-26 13:19:51

Re: LightDm Doesn't Work

#15 2021-02-26 13:24:58

Re: LightDm Doesn't Work

#16 2021-02-26 13:28:39

Re: LightDm Doesn't Work

#17 2021-02-26 13:32:55

Re: LightDm Doesn't Work

#18 2021-02-26 13:34:08

Re: LightDm Doesn't Work

#19 2021-02-26 13:46:20

Re: LightDm Doesn't Work

#20 2021-02-26 13:49:02

Re: LightDm Doesn't Work

#21 2021-02-26 13:50:44

Re: LightDm Doesn't Work

#22 2021-02-26 13:53:37

Re: LightDm Doesn't Work

#23 2021-02-26 13:57:13

Re: LightDm Doesn't Work

#24 2021-02-26 14:44:51

Re: LightDm Doesn't Work

#25 2021-02-26 14:56:30

Re: LightDm Doesn't Work

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