no login screen after boot

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SaintDanBert
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no login screen after boot

Post by SaintDanBert » Fri Jan 12, 2018 6:59 pm

Running Mint 18.3 Cinnamon, I no longer get a login screen after boot. Things appear to stall with a black screen.
I regret that I'm not certain how to diagnose this, much less fix things. I appreciate any guidance and help.

I can use CTRL-ALT-F1 to open a console, login and then 'startx'. However, for my sins, I cannot discover why the login screen does not appear.

I found the following in /var/log/X0rg.0.log

Code: Select all

...
[    33.788] (II) Module ABI versions:
[    33.788]    X.Org ANSI C Emulation: 0.4
[    33.788]    X.Org Video Driver: 20.0
[    33.788]    X.Org XInput driver : 22.1
[    33.788]    X.Org Server Extension : 9.0
[    33.789] (++) using VT number 7

[    33.789] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[    33.789] (II) xfree86: Adding drm device (/dev/dri/card0)
[    33.790] (--) PCI:*(0:0:2:0) 8086:0126:17aa:21db rev 9, Mem @ 0xf0000000/4194304, 0xe0000000/268435456, I/O @ 0x00005000/64
[    33.791] (II) LoadModule: "glx"
...
My workstation is:

Code: Select all

prompt$  inxi -S
System:    Host: kaywine Kernel: 4.4.0-104-generic x86_64 (64 bit)
           Desktop: Cinnamon 3.6.7  Distro: Linux Mint 18.3 Sylvia
           
prompt$ uname --all

Linux kaywine 4.4.0-104-generic #127-Ubuntu SMP Mon Dec 11 12:16:42 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
I also have the 4.4.0.109-generic kernel. I did a fall back to the pervious edition thinking that it might be the culprit.

Thanks in advance,
~~~ 0;-Dan
All government spending, regardless of the motives, uses YOUR money!
Any government extensive enough to give you anything that you want is also
powerful enough to take everything that you have.

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SaintDanBert
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Re: no login screen after boot

Post by SaintDanBert » Mon Jan 15, 2018 6:34 pm


FOLLOW-UP:

When I start the laptop from power off, things proceed normally until I should expect to see the login screen. The disk activity LED continues to flicker until it stops. The next thing I observer is the screen remains black.

At this point, I can press CTRL-ALT-F1 and I will get a login prompt. I am able to login without troubles.

Lastly, I can activate the desktop using:

Code: Select all

prompt$  startx
...
..... the desktop starts are runs as expected
On another occasion, I performed the login as described above. I did not launch the desktop.
Instead, I did the following:

Code: Select all

prompt$ sudo -i
*********
prompt# lightdm
...
The display presented a loging screen without any wallpaper. I was able to login, but I did not get a desktop.
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[/color]
Thanks in advance,
~~~ 0;-( Dan
All government spending, regardless of the motives, uses YOUR money!
Any government extensive enough to give you anything that you want is also
powerful enough to take everything that you have.

User avatar
SaintDanBert
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Posts: 218
Joined: Sat Feb 20, 2010 4:04 pm
Location: Austin, TX USA

[RESOLVED] Re: no login screen after boot

Post by SaintDanBert » Thu Feb 01, 2018 8:44 pm

After lots of searching and not a lot of help online, I moved the flat tire to a different wheel and hoped that it went away. More specifically, I did the following:
  • after a failed boot, I used CTRL+ALT+F1 to open a console
  • login with my username
  • use startx to launch my desktop
  • open synaptic
  • marked 'lightdm' for removal and applied that change
  • marked 'lightdm' for install and applied that change
  • did a power-off, shutdown, restart
This time, boot ran and launched the login screen. I was able to login and my desktop launched.

I have no idea what happened. I have no idea about how I should have been able to see something in the logs and journals that would explain what was going on. Most importantly, I did not receive much help either here or on linuxquestions.

Maybe next time,
~~~ 0;-< Dan
All government spending, regardless of the motives, uses YOUR money!
Any government extensive enough to give you anything that you want is also
powerful enough to take everything that you have.

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