https://bugs.freedesktop.org/show_bug.cgi?id=99843 --- Comment #14 from dan@jerber.co.uk --- The 4890 has a RV790 GPU. I've run the trace again and also see an error similar to the one Gert mentioned: 1639 Message api issue 1: FBO incomplete: no attachments and default width or height is 0 [-1]. There are also more errors reported around glDrawArrays as follows: major api error 2: GL_INVALID_ENUM in glGetIntegerV(pname=GL_TEXTURE_BINDING_CUBE_MAP_ARRAY) warning: dumping of normalized attribute (vertexCoord) not yet supported warning: dumping of normalized attribute (textureCoord) not yet supported -- You are receiving this mail because: You are the assignee for the bug.