Can't enable ULMB 2 on Wayland

Graphics / Linux Linux
9

I just installed nvidia 570, it also has a ULMB related change.

https://www.reddit.com/r/linux_gaming/comments/1i8l45g/comment/m8udwrv/

* Added a new kernel module parameter, 'conceal_vrr_caps', to the
  nvidia-modeset kernel module. This parameter may be used to enable
  usage of features on some displays such as ULMB (Ultra Low Motion
  Blur) which are incompatible with VRR. See the "Direct Rendering
  Manager Kernel Modesetting" (DRM KMS) chapter of the README for
  further information.

But after trying to set nvidia-modeset.conceal_vrr_caps=1 into kernel options or options nvidia-modeset conceal_vrr_caps=1 into a modprobe.d conf file.

Unless I am doing it wrong. The issue persist.

[    1.414549] nvidia_modeset: unknown parameter 'disable_vrr_mclk_switch' ignored
[    1.414551] nvidia_modeset: unknown parameter 'conceal_vrr_caps' ignored
[    1.414553] nvidia_modeset: unknown parameter 'disable_vrr_mclk_switch' ignored
[    1.414554] nvidia_modeset: unknown parameter 'conceal_vrr_caps' ignored
[    1.416416] nvidia-modeset: Loading NVIDIA UNIX Open Kernel Mode Setting Driver for x86_64  570.86.10  Release Build  (dvs-builder@U16-I3-B16-4-3)  Thu Jan 16 03:17:33 UTC 2025

Tried with _ and -

@aplattner

Fixed the first command, it was disable_vrr_memclk_switch. But nothing on conceal_vrr_caps. It doesnt even show as an option.

❯ sudo ls -l /sys/module/nvidia_modeset/parameters/
total 0
-r-------- 1 root root 4096 jan 24 22:13 config_file
-r-------- 1 root root 4096 jan 24 22:13 debug_force_color_space
-r-------- 1 root root 4096 jan 24 22:13 disable_hdmi_frl
-r-------- 1 root root 4096 jan 24 22:13 disable_vrr_memclk_switch
-r-------- 1 root root 4096 jan 24 22:13 enable_overlay_layers
-r-------- 1 root root 4096 jan 24 22:13 fail_alloc_core_channel
-r-------- 1 root root 4096 jan 24 22:13 fail_malloc
-r-------- 1 root root 4096 jan 24 22:13 hdmi_deepcolor
-r-------- 1 root root 4096 jan 24 22:13 malloc_verbose
-r-------- 1 root root 4096 jan 24 22:13 opportunistic_display_sync
-r-------- 1 root root 4096 jan 24 22:13 output_rounding_fix
-r-------- 1 root root 4096 jan 24 22:13 vblank_sem_control