At boot time I can see black screen with cursor

English Install/Boot/Login
1

I’ve searched on google and I found one solution, I tried with nomodeset it is still not working.
I am not having Nvidia graphics card.
Help me resolve this problem…
Thank you.

2

Which openSUSE are you using? Which WM or DE have you installed? As root login, what does

# zypper in inxi # required only if inxi is not already installed
# inxi -c0 -G

show? You can try appending to the kernel cmdline

plymouth.enable=0

and/or remove

splash=silent quiet

from it at the Grub2 menu using the e key to get rid of the black screen.

3

openSUSE- Leap 42.3
DE- KDE

I have removed from the GRUB menu-- splash=silent quiet and added
plymouth.enable=0 still the error is same.

I also tried ATL+ctrl+backspace I can see the login window and then I choose other DE then also it appears black screen.

I am worried because I’m having all the data in it and I dont want to loose.

4

I’ve had various issues similar to this with GDM as my DisplayManager

And every now and again, SUSE Tumbleweed (at least) resets my default Displaymanager to gdm, when I have chose LightDM

I assume you know how to login as root via a console using Ctrl Alt F1 ?

So, try doing


sudo update-alternatives --config default-displaymanager

And if you only have GDM then try adding an alternative eg lightdm

zypper install lightdm

then having done that use the update-alternatives to select lightdm as your default…

For reference, I’m using Tumbleweed, LightDM, and xfce4 on a Lenovo laptop with an Intel HD5500 built-in video card

5

By the way. don’t dispair

All the data on your disk is still there, even if your login environment is broken…

6

Hello,
I login as root via a console using Ctrl Alt F1-

  1. I run the command
    sudo update-alternatives --config default-displaymanager

and got the following result-
If ‘sudo’ is not a type you can use command-not-found…

  1. then I run the command as-

    update-alternatives --config default-displaymanager

– Absolute path to ‘update-altenatives’ is ‘/usr/sbin/update-altenatives’, so running it may require superuser privileges

  1. then run as-

    /usr/sbin/update-alternatives --config default-displaymanager

–error: no altenatives for default for default manager…

  1. Finally tried to install lightdm by-
    zypper install lightdm

zypper is not a type

7

I think you should try again. There must have been a typing error. That command should work, as should

# zypper in lightdm
8

Tried with every solution still not working…

9

Does your gfxcard have more than one connector? Does your display have more than one connector? If yes to both, try a different type of cable.

10

I login as root via a console using Ctrl Alt F1-

  1. I run the command
    sudo update-alternatives --config default-displaymanager

and got the following result-
If ‘sudo’ is not a type you can use command-not-found…

If you are root, you do not need sudo…
I prefer to switch to a root shell with su - instead of typing for very Command sudo…

Please post:

/sbin/lspci -nnk | grep -EiA3 'vga|3d|display'
11

after login to console by ATL+CRTL+F1

when I run su I got the result-

If ‘su’ is not a typo you can use command-not-found to lookup the pakage that contains it, like this:
cnf su

12 
after login to console by ATL+CRTL+F1

In an Terminal you have to login with:
root
root-Password

I mean an graphical Terminal/Konsole…