https://bugs.freedesktop.org/show_bug.cgi?id=64746 --- Comment #3 from Emil Velikov --- Hi Marc Can you attach your xorg.log, the link provided returns a 404 What is the output of $ DRI_PRIME=1 glxinfo | grep render Note that Optimus is a very "funny" case and your experience may vary depending on the connections between the GPUs and the outputs - special thanks goes to your laptop manufacturer :) For further information take a look at our wiki [1] [1] http://nouveau.freedesktop.org/wiki/Optimus/ -- You are receiving this mail because: You are the assignee for the bug.