(Wayland) kernel: drm_gem_plane_helper_prepare_fb: explicit fence not handled

[matt_k]

Hello,
Ever since I tried to play with wayland, this message keeps on appering in /var/log/messages and also in the tty from which I've started a wayland session.

drm_gem_plane_helper_prepare_fb: explicit fence not handled
syslogd: last message repeated 3903 times

I seem to be unable to dig out anything relevant that would be useful for me in order to alleviate the message. I've found that the message most likely comes from drm-kmod/drivers/gpu/drm_gem_atomic_helper.c. But I have no idea what to do with this information. Is there anyone who may have some additional information here?

 

[matt_k]

Ok, after some time, and testrunning various wayland window managers, I found out that the error is reported only by sway and hyprland. Wayfire, river, dwl, hikari work without any errors.