[SOLVED] Light Display Manager failed ot start

Ch3stnut · 2021-04-26 03:05:40

Hi All,
I am currently completing my first Arch install, and was hoping to make it through without having to post here. But I have come up with an issue with LightDM.
Initially it was working fine, with default settings, and I was able to log into QTile. I installed private-internet-access-vpn from the AUR and set the basic configurations, but have not logged in yet and have left it set to autologin = False in the config.
Now on reboot the system hangs, and when I log into a tty I can see that lightdm has failed using

systemctl list-units --state=failed

Restarting LightDM with

systemctl restart lightdm

allows me to log back in without issue.

So I am at a loss as to why it will not start on boot. The output of

journalctl -u lightdm

shows that lightdm always took several attemps at starting, but started in the end.

https://pastebin.com/AkPawJe2 - LightDM log from latest reboot, @ 83s is where it is started manually
https://pastebin.com/QYzvqaij - Log from journalctl -u lightdm --boot=-1
https://pastebin.com/uC3ntAp0- Log from journalctl -u NetworkManager --boot=-1

If there is any further information required please let me know.

Any assistance or point to a resource would be appreciated, and I do hope that I have not missed something simple.

Cheers

Last edited by Ch3stnut (2021-04-26 09:37:52)

jasonwryan · 2021-04-26 03:24:29

When it fails, use journalctl _PID=XXX to get a more descriptive error message. And make sure your pager is not truncating the messages.

See here for details: https://wiki.archlinux.org/index.php/Systemd/Journal

Ch3stnut · 2021-04-26 06:27:11

Hey jasonwryan,

Sorry I didn't notice the truncating of the messages.

When using journalctl _PID=XXX this is what I see:
Apr 26 11:37:09 Eilsum lightdm[486]: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Accounts was not provided by any .service files

Reading around it looks like it is something to do with the network configuration files, though I am trying to figure out how mine should look.

Most places talk about a /etc/NetworkManager/nm-system-settings.conf file, there is not one on my system just the /etc/NetworkManager/NetworkManager.conf, so trying to tie the solutions together.

Thanks for the initial response.

jasonwryan · 2021-04-26 07:07:45

You have installed a greeter? https://wiki.archlinux.org/index.php/Li … n_flashing

seth · 2021-04-26 07:34:16

Now on reboot the system hangs, and when I log into a tty I can see that lightdm has failed […]
Restarting LightDM […] allows me to log back in without issue.

This has been a very common pattern in the last month(s) and there's also a workaround specifically for lightdm on the lightdm wiki.
Search the forum for "lightdm", there're a couple of relevant hits in the first 20 results.

Ch3stnut · 2021-04-26 08:04:48

Hi jasonwryan

Yes I have the lightdm-gtk-greeter installed

Hi Seth

Thanks for the links, and pointing me in the direction of the other issues. Once I have this resolved I will make comment on the solution in my case, and mark as solved.

seth · 2021-04-26 08:06:39

The links on the bottom of my post are my signature and not related to this specific problem.
It's just what usually comes up all the time ;-)

Ch3stnut · 2021-04-26 09:15:07

Links are useful information either way.

Anyway thanks to both of you for the responses, I was looking in the wrong place for a solution. As there seemed to be quite a few people having issues with network config and lightdm, and the fact that I had just been playing with PIA I was going down that path.

The solution was a lot simpler and also listed in the wiki as stated, so adding the below to the lightdm.conf file fixed the issue.

[LightDM]
logind-check-graphical=true

Arch Linux

#1 2021-04-26 03:05:40

[SOLVED] Light Display Manager failed ot start

#2 2021-04-26 03:24:29

Re: [SOLVED] Light Display Manager failed ot start

#3 2021-04-26 06:27:11

Re: [SOLVED] Light Display Manager failed ot start

#4 2021-04-26 07:07:45

Re: [SOLVED] Light Display Manager failed ot start

#5 2021-04-26 07:34:16

Re: [SOLVED] Light Display Manager failed ot start

#6 2021-04-26 08:04:48

Re: [SOLVED] Light Display Manager failed ot start

#7 2021-04-26 08:06:39

Re: [SOLVED] Light Display Manager failed ot start

#8 2021-04-26 09:15:07

Re: [SOLVED] Light Display Manager failed ot start

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