Lightdm won't start

Support Graphics & Display
1

Running ManjaroLinux 5.15.131 on core2duo.

I recently added a new video card on pcie (Nvidia) and updated the driver. It did not start the display, so I removed the card and used the intel motherboard video.
But even now the gui won’t start. It gives the error
Failed to load kernel module.

Journalctl gives this log:

-- Boot 138a057d993d4e858e430e3b7187ef13 --
Oct 16 20:15:29 srikanth-pc systemd[1]: Starting Light Display Manager...
Oct 16 20:15:29 srikanth-pc systemd[1]: Started Light Display Manager.
Oct 16 20:15:32 srikanth-pc systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE
Oct 16 20:15:32 srikanth-pc systemd[1]: lightdm.service: Failed with result 'exit-code'.
Oct 16 20:15:32 srikanth-pc systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 1.
Oct 16 20:15:32 srikanth-pc systemd[1]: Starting Light Display Manager...
Oct 16 20:15:32 srikanth-pc systemd[1]: Started Light Display Manager.
Oct 16 20:15:32 srikanth-pc systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE
Oct 16 20:15:32 srikanth-pc systemd[1]: lightdm.service: Failed with result 'exit-code'.
Oct 16 20:15:32 srikanth-pc systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 2.
Oct 16 20:15:32 srikanth-pc systemd[1]: Starting Light Display Manager...
Oct 16 20:15:32 srikanth-pc systemd[1]: Started Light Display Manager.
Oct 16 20:15:32 srikanth-pc systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE
Oct 16 20:15:32 srikanth-pc systemd[1]: lightdm.service: Failed with result 'exit-code'.
Oct 16 20:15:33 srikanth-pc systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 3.
Oct 16 20:15:33 srikanth-pc systemd[1]: Starting Light Display Manager...
Oct 16 20:15:33 srikanth-pc systemd[1]: Started Light Display Manager.
Oct 16 20:15:33 srikanth-pc systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE
Oct 16 20:15:33 srikanth-pc systemd[1]: lightdm.service: Failed with result 'exit-code'.
Oct 16 20:15:33 srikanth-pc systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 4.
Oct 16 20:15:33 srikanth-pc systemd[1]: Starting Light Display Manager...
Oct 16 20:15:33 srikanth-pc systemd[1]: Started Light Display Manager.
Oct 16 20:15:33 srikanth-pc systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE
Oct 16 20:15:33 srikanth-pc systemd[1]: lightdm.service: Failed with result 'exit-code'.
Oct 16 20:15:34 srikanth-pc systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 5.
Oct 16 20:15:34 srikanth-pc systemd[1]: lightdm.service: Start request repeated too quickly.
Oct 16 20:15:34 srikanth-pc systemd[1]: lightdm.service: Failed with result 'exit-code'.
Oct 16 20:15:34 srikanth-pc systemd[1]: Failed to start Light Display Manager.

What is the problem here?

Regards,
Srikanth

2

If the nVidia driver was not removed before removing the GPU, I suggest:

  • Boot system using Manjaro Live ISO

  • sudo manjaro chroot -a
    to login to installed OS

  • sudo mhwd -a pci free 0300
    to detect and install the best available free driver

wiki.manjaro.org – Configure Graphics Cards – Automated Identification and Installation

1 Like
3

Hi,
I tried the mhwd command and it did install some libraries.

But the problem still persists.

For reference, I have put the relevant journal entries in pastebin.
Journal entries
https://pastebin.com/d4myzz1P

I switched to another terminal and tried to startx , but got errors.
Xorg log
(https://pastebin.com/Dr8Xsetf)

Thanks,
Srikk

4

I renamed the conf file at /etc/X11/mhwd.d/nvidia.conf to nvidia.conf.old.

This time I was able to login into plasma.

Not sure if this is the correct way, but now it works fine.

Regards,
Srikk

5

that indicates a configuration error.

not everyone should do this

6

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