Black screen with cursor (both X11 and Wayland, KDE Plasma)

[shishimaru]

Hi there.

Unfortunately I have a black screen with only a cursor when I boot Tumbleweed.

I have an Nvidia RTX laptop and I haven’t touched a thing since yesterday when I used Tumbleweed. I can only open Konsole thanks to Ctrl+Alt+T.

I tried:

• fsck my / and /home partitions
• managed to switch from x11 to Wayland thanks to sddm restart and switch to another tty, but none of them works
• install again Nvidia drivers
• boot with only the intel card with sudo prime-select boot intel && sudo reboot; here only the internal monitor works (which is absolutely fine), but I have a black screen again
• boot three different snapshots, even the oldest

Windows and Ubuntu from Live USB are working perfectly fine, so I’d like to exclude GPU failure for now.

Should I reinstall the system?

[hui]

Tumbleweed only starts if splash is removed from bboot options

I am using Tumbleweed. After snapshot 20241118 (I think, could be -1 or +1), my laptop did not start anymore. However, if I start via the recovery options or if I remove the splash option from grub, I am able to start. If I do nothing during boot, I keep having an infinite blinking cursor in the upper left corner. Esc does seem to do anything, I don´t see any messages and the cursor is visible. What can I do to fix this or to (help) debug the issue?

[shishimaru]

Thanks, but this doesn’t work, even if I remove splash from grub2.

My system boots, I just have a black screen and I can only summon Konsole.

[deano_ferrari]

Is it just the SDDM display manager that is failing here? If you login to a VT as user, can you start Plasma Wayland successfully with the following command?

startplasma-wayland

[deano_ferrari]

@shishimaru

My system boots, I just have a black screen and I can only summon Konsole.

If you are managing to get into a ‘broken’ Plasma desktop session, then the next thing to try might be to drop down to a text-mode session (init 3) and try the following:

1. Create a new user with ncurses YaST, then see if you can get a working deskrtop environment when logging in as that user.

2. For the existing user, remove ~/.cache, and remove or rename~/.config/plasma-org.kde.plasma.desktop-appletsrc, then see if you can get a working desktop session again.

[shishimaru]

This seems to work!

Also, I must login with X11 after since Wayland still has black screen.

I don’t know why, Vulkan was set as renderer (and I entered with Intel GPU only since I uninstalled Nvidia drivers). After setting it as “automatic”, I can enter Wayland too. I’ll try to proceed and install the Nv drivers again.

[deano_ferrari]

@shishimaru

This seems to work!

Also, I must login with X11 after since Wayland still has black screen.

Which step (1, 2 or both) works?

[alfredocubitos]

Even if the screen is black you can type your password to login.

[alfredocubitos]

it seems to be fixed in 20241209

[epp]

There are other threads in the forum on the same issue. I finally gave up on KDE and installed Xfce.