When running wayland on gnome with 495.44, these errors are continuously printed out. They don’t seem to be fatal but it’s hard to say, the only thing that appears to not be working correctly is frequent Firefox crashes.
gnome-shell[25108]: Window manager warning: Failed to write cursors buffer data: Cannot allocate memory
kernel: [drm:__nv_drm_gem_nvkms_map [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00002d00] Failed to map NvKmsKapiMemory 0x0000000005dc52f
Experiencing the same issue.
There is gnome wayland issue connect to this problem, Wayland session bug (#2034) · Issues · GNOME / mutter · GitLab
Same here with 495.46 on Fedora 35.
Dec 19 21:15:42 localhost gnome-shell[4300]: Window manager warning: Failed to write cursors buffer data: Cannot allocate memory
Dec 19 21:15:42 localhost kernel: [drm:__nv_drm_gem_nvkms_map [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000c00] Failed to map NvKmsKapiMemory 0x0000000054b7f597
Also having problems with nvidia 495.46 installed from Fedora Core 35 RPM.
GeForce GTX 750 Ti
Extract from dmesg -
[drm:__nv_drm_gem_nvkms_map [nvidia_drm]] ERROR [nvidia-drm] [GPU ID 0x00000100] Failed to map NvKmsKapiMemory 0x00000000454415ff
Symptoms - crashing Firefox tabs
Workaround - log in with Xorg rather than Wayland
NVIDIA-Linux-x86_64-575.64 still can reproduce the issue with redhat 10.0