Hardware cursor is not working on Wayland/DRM sessions

Graphics / Linux Linux
, ,
1
  • Enabling hardware cursor in KDE Plasma results in spam of kernel DRM error messages and not working hardware cursor:

[ 239.300217] [drm] [nvidia-drm] [GPU ID 0x00002d00] Framebuffer memory not appropriate for scanout

  • Enabling hardware cursor in wlroots based compositors results in invisible cursor.

OS: Arch Linux (Linux 6.4.7-arch1-2)
Drivers: 535.86.05

2

Looking at the code for this, it looks like this happens if wlroots allocates a buffer in system memory and then tries to use it as the surface for the cursor. NVIDIA dGPUs can only display surfaces that are in video memory.

3

Are there any plans for such support to be implemented ?
The hardware mouse cursor seems to bring out other issues in other wayland compositors(gamescope, kwin, the other wl-roots such as the sway and hyprland) Support for HW Mouse Cursor - Wayland