Comment # 3 on bug 64746 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/