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Jstriker

Member

Registered: 2024-07-04

Posts: 2

Black screen with cursor after logging into KDE Wayland

Hi

I am unable to start an Wayland session in KDE. After I login I get a black screen with a cursor. I am using an Nvidia 4070, and I have read the Nvidia wiki page, installed the correct driver, and also set all of the options below.

In my grub config I have updated it as below to include nvidia_drm.modeset=1 nvidia-drm.fbdev=1 as below

GRUB_CMDLINE_LINUX_DEFAULT="loglevel=3 quiet nvidia_drm.modeset=1 nvidia-drm.fbdev=1"

I then updated grub using

grub-mkconfig -o /boot/grub/grub.cfg

I have created a file at /etc/modprobe.d/nvidia.conf with the line

options nvidia_drm modeset=1

In /etc/mkinitcpio.conf I have set the modules and hooks as below

MODULES=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)
HOOKS=(base udev autodetect microcode modconf keyboard keymap consolefont block filesystems fsck)

When I run `sudo cat /sys/module/nvidia_drm/parameters/modeset1 it outputs Y

However after rebooting whenever I try and login to a Wayland session, after entering my password I just get a black screen with the cursor. I can login to an X11 sesion ok.

My logs are below. I did notice a few repeating lines such as below

Jul 04 17:09:09 Arc kwin_wayland_wrapper[1169]: src/nv_gbm.c:123: GBM-DRV error (nv_gbm_bo_create): DRM_IOCTL_NVIDIA_GEM_ALLOC_NVKMS_MEMORY failed (ret=-1)
Jul 04 17:09:09 Arc kernel: [drm:nv_drm_gem_alloc_nvkms_memory_ioctl [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000500] Failed to allocate NVKMS memory for GEM object

Logs: https://paste.mozilla.org/4CkETYy9

Thank you for any help

Last edited by Jstriker (2024-07-04 16:49:53)

MichaARCH

Member

Registered: 2021-04-16

Posts: 19

Re: Black screen with cursor after logging into KDE Wayland

Have you already seen / tried this post[?

Jstriker

Member

Registered: 2024-07-04

Posts: 2

Re: Black screen with cursor after logging into KDE Wayland

I did just try this now, but when I set auto login for Wayland it just logged into a black screen with a cursor again, and I had to edit my sddm config file to disable auto login and after rebooting I got the normal login page again, and I could login into an X11 session.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,223

Re: Black screen with cursor after logging into KDE Wayland

These error messages mean your GPU is crashing, the most harmless variation of this is it's simply not seated correctly, could also be a driver bug, which connector are you using? I'd also suggest you test dropping the fbdev parameter, it's still experimental but not required for a proper GUI session anyway.

Also your snippet/paste is unreachable, please repost it.

Last edited by V1del (2024-07-04 18:42:17)