Unable to login normally [Solved]

[MAYBL8]

Yep
Here is the beginning:

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dcihon@mx21xfce:~$ find ~ -user root -ls
      256      0 drwxrwxrwx   2 root     root            0 Sep 23 09:09 /home/dcihon/mnt/servermusic
   142718      0 drwxrwxrwx   2 root     root            0 Jan 27  2022 /home/dcihon/mnt/servermusic/3\ Doors\ Down
   142719      0 drwxrwxrwx   2 root     root            0 Jan 26  2022 /home/dcihon/mnt/servermusic/3\ Doors\ Down/Away\ From\ The\ Sun

Here is the end:

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  200016  10176 -rwxrwxrwx   1 root     root      10414910 Sep 21 12:29 /home/dcihon/mnt/servermusic/James\ Blunt/Monsters/01\ -\ Monsters.mp3
   200021      0 drwxrwxrwx   2 root     root             0 Sep 23 09:09 /home/dcihon/mnt/servermusic/Lewis\ Capaldi
   200022      0 drwxrwxrwx   2 root     root             0 Sep 23 09:09 /home/dcihon/mnt/servermusic/Lewis\ Capaldi/Breach\ EP
   200015   4416 -rwxrwxrwx   1 root     root       4483361 Sep 20 14:19 /home/dcihon/mnt/servermusic/Lewis\ Capaldi/Breach\ EP/03\ -\ Someone\ You\ Loved.mp3
dcihon@mx21xfce:~$ ll

[dolphin_oracle]

there should be a log at /var/log/lightdm/lightdm.log

[MAYBL8]

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[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.26.0, UID=0 PID=2739
[+0.00s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/01_debian.conf
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/02_MX.conf
[+0.00s] DEBUG:   [SeatDefaults] is now called [Seat:*], please update this configuration
[+0.00s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
[+0.00s] DEBUG:   [SeatDefaults] is now called [Seat:*], please update this configuration
[+0.00s] DEBUG: Registered seat module local
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Registered seat module unity
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.02s] DEBUG: _g_io_module_get_default: Found default implementation local (GLocalVfs) for ‘gio-vfs’
[+0.04s] DEBUG: Monitoring logind for seats
[+0.04s] DEBUG: New seat added from logind: seat0
[+0.04s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+0.04s] DEBUG: Seat seat0 has property CanMultiSession=no
[+0.04s] DEBUG: Seat seat0: Starting
[+0.04s] DEBUG: Seat seat0: Creating greeter session
[+0.04s] DEBUG: Seat seat0: Creating display server of type x
[+0.05s] DEBUG: Seat seat0: Plymouth is running on VT 1, but this is less than the configured minimum of 7 so not replacing it
[+0.05s] DEBUG: Quitting Plymouth
[+0.07s] DEBUG: Using VT 7
[+0.07s] DEBUG: Seat seat0: Starting local X display on VT 7
[+0.07s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+0.07s] DEBUG: XServer 0: Writing X server authority to /var/run/lightdm/root/:0
[+0.07s] DEBUG: XServer 0: Launching X Server
[+0.07s] DEBUG: Launching process 2864: /bin/X -dpi $DPI :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+0.07s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+0.07s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.07s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
[+0.10s] DEBUG: Loading users from org.freedesktop.Accounts
[+0.10s] DEBUG: User /org/freedesktop/Accounts/User1000 added
[+0.80s] DEBUG: Got signal 10 from process 2864
[+0.80s] DEBUG: XServer 0: Got signal from X server :0
[+0.80s] DEBUG: XServer 0: Connecting to XServer :0
[+0.80s] DEBUG: Launching process 2966: /usr/local/bin/early-bg
[+0.80s] DEBUG: Process 2966 exited with return value 0
[+0.80s] DEBUG: Seat seat0: Exit status of /usr/local/bin/early-bg: 0
[+0.80s] DEBUG: Seat seat0: Display server ready, starting session authentication
[+0.80s] DEBUG: Session pid=2972: Started with service 'lightdm-greeter', username 'lightdm'
[+0.81s] DEBUG: Session pid=2972: Authentication complete with return value 0: Success
[+0.81s] DEBUG: Seat seat0: Session authenticated, running command
[+0.81s] DEBUG: Launching process 2975: /usr/bin/lightdm-shutdown
[+0.83s] DEBUG: Process 2975 exited with return value 0
[+0.83s] DEBUG: Seat seat0: Exit status of /usr/bin/lightdm-shutdown: 0
[+0.83s] DEBUG: Session pid=2972: Running command /bin/lightdm-webkit2-greeter
[+0.83s] DEBUG: Creating shared data directory /var/lib/lightdm/data/lightdm
[+0.83s] DEBUG: Session pid=2972: Logging to /var/log/lightdm/seat0-greeter.log
[+0.85s] DEBUG: Activating VT 7
[+0.85s] DEBUG: Activating login1 session c1
[+0.85s] DEBUG: Seat seat0 changes active session to c1
[+0.85s] DEBUG: Session c1 is already active
[+18.05s] DEBUG: Seat seat0 changes active session to 
[+25.24s] DEBUG: Seat seat0 changes active session to 1

[Huckleberry Finn]

...I haven't ran any commands as root

Yes, I just meant normally it works with user and not with root (therefore (since yours didn't work as user) it would be a sign that things might've changed to root.) (Whatever.. we can eliminate that as the other command shows just the music files and directory).

What if you create a new user with "MX User Manager" and then try to login with that?

[MAYBL8]

I was really hoping that would work bu it didn't .
new user has the same issue.
That is interesting.

Should I try to uninstall lightdm or try a different login manager?

[Huckleberry Finn]

Then, yes, it's something system-wide.

If you like, first purge, then reinstall lightdm

[MAYBL8]

I think I will save the configuration files first in case that isn't the solution.

[Huckleberry Finn]

Yes, of course you can.

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sudo apt purge lightdm -y ; sudo apt update ; sudo apt install lightdm -y

I'm on MX 19 at the moment, but these are the related packages:

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$ apt list *lightdm* -i
Listing... Done
liblightdm-gobject-1-0/mx,now 1.26.0-4+vtswitchmx19 i386 [installed,automatic]
lightdm-gtk-greeter-mx19/mx,now 20.12.01 all [installed]
lightdm-gtk-greeter-settings/oldstable,now 1.2.2-2 all [installed]
lightdm-gtk-greeter/oldstable,now 2.0.6-1 i386 [installed]
lightdm-modified-init/mx,now 20.01.02 all [installed]
lightdm/mx,now 1.26.0-4+vtswitchmx19 i386 [installed]

[MAYBL8]

We have success!!!

Now what could it have been .
How much work do I want to do to try to figure that out?

[Huckleberry Finn]

That quick !? :D