Tumbleweed Gnome-sudoku: error Vulkan: Loader Message: setup_loader_term_phys_devs

Devs, All, After the latest TW dup, there is an error written to stderr from gnome-sudoku: (gnome-sudoku:38804): Gdk-CRITICAL **: 01:19:21.227: Vulkan: Loader Message: setup_loader_term_phys_devs: Failed to detect any valid GPUs in the current config Anybody have a clue what Vulkan is looking for that it isn't finding -- and how do I fix it? Is this mesa related? -- David C. Rankin, J.D.,P.E.