https://bugzilla.redhat.com/show_bug.cgi?id=1160916
--- Comment #4 from IBM Bug Proxy bugproxy@us.ibm.com --- ------- Comment From ruscur@au1.ibm.com 2015-10-16 04:43 EDT------- This has been fixed in F21 by a kernel update, and can be worked around in older kernels by blacklisting bochs_drm (i.e. booting with modprobe.blacklist=bochs_drm)