Arch Linux

RealGecko

Member

Registered: 2012-01-04

Posts: 39

Plasma, Wayland and NVIDIA [SOLVED]

I use SDDM to login to desktop, during login I have two options for session Plasma(X11) and Plasma(Wayland). X11 works pretty fine, but selecting Wayland leads to nothing: screen blinks for a couple of times showing the startup messages and then I get returned to SDDM login screen. I have GTX1070 with Nvidia 495.46 driver installed. Heard that Nvidia proprietary drivers have some problems with Wayland, but also heard that they're about to be fixed year ago. Is there any way to diagnose the problem? Where can I find logs with the problem described?

Last edited by RealGecko (2023-06-08 08:29:51)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,248

Re: Plasma, Wayland and NVIDIA [SOLVED]

Not a year ago, like 3-4 months ago with the advent of the 495 driver they implemented initial GBM support, which has still some compat issues. Afaik currently explicitly KDE has some problems but from what I know due to incorrect implementations/assumptions in Qt rather than anything in nvidia or KDE in particular.

Might want to follow https://github.com/NVIDIA/egl-wayland/issues/40 and the Qt patches linked there for the relevant progress here

As for the logs, check your journal after a login attempt, i.e.

sudo journalctl -b

Also, a basic requirement for this having any chance of working regardless of any potential bugs, you absolutely must enable modesetting: https://wiki.archlinux.org/title/NVIDIA … de_setting

Last edited by V1del (2022-01-12 13:20:01)

RealGecko

Member

Registered: 2012-01-04

Posts: 39

Re: Plasma, Wayland and NVIDIA [SOLVED]

Setting

nvidia_drm.modeset=1

helped, thanks.