Hi all, Running xfwm4 4.13.0-1 with composite enabled and mesa 18.1.2-1 isn't enough to trigger that white screen on my system. The kernel is a customised linux 4.17.3 from pristine tarball. The graphic card is an AMD/ATI Radeon R5 230 (Caicos).
From glxinfo output: OpenGL vendor string: X.Org OpenGL renderer string: AMD CAICOS (DRM 2.50.0 / 4.17.3, LLVM 6.0.0) OpenGL core profile version string: 3.3 (Core Profile) Mesa 18.1.2 OpenGL core profile shading language version string: 3.30 Best regards, -- Manolo Díaz