155492 2016-03-15 08:49:04 -0700 [GTK] Empty window when AC is enabled but OpenGL is not working 2016-03-15 08:49:21 -0700 1 1 1 Unclassified WebKit WebKitGTK WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=154777 P2 Normal --- 1 clopez webkit-unassigned bugs-noreply oldest_to_newest 1174977 0 clopez 2016-03-15 08:49:04 -0700 If the GL configuration is broken for some reason, then any WebKitGTK+ window will be empty if AC is enabled. This is my the test case: I use the nvidia propietary drivers, so by setting the path to the mesa ones I mess with my GL setup $ export LD_LIBRARY_PATH=/usr/lib/mesa-diverted/x86_64-linux-gnu $ glxinfo name of display: :0.0 libGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast X Error of failed request: GLXBadContext Major opcode of failed request: 155 (GLX) Minor opcode of failed request: 6 (X_GLXIsDirect) Serial number of failed request: 54 Current serial number in output stream: 53 Now if i run MiniBrowser I always get an empty window for any site that enables AC (even google.com) No crash however. I don't get a coredump and the webprocess don't crashes. If I manually opt to disable AC by doing export WEBKIT_DISABLE_COMPOSITING_MODE=1 Then all works (no fancy animations, but it just works fine)