https://bugs.freedesktop.org/show_bug.cgi?id=96460 --- Comment #7 from Ilia Mirkin --- Please try to disable use of GL for composition if you have a compositor enabled. The nv30 nouveau backend (which covers nv4x as well) has many deficiencies, and I would not recommend using it for desktop composition. -- You are receiving this mail because: You are the QA Contact for the bug. You are the assignee for the bug.