Created attachment 1485774 [details]
try harder to span instead of clone
I have a 4k monitor that only likes to do 1080p over the HDMI cable. In this scenario Xorg picks clone mode instead of the much more useful spanning mode.
The attached patch makes it come up in a spanned configuration.
Looks sane to me.
Seems to be ok, was not able to reproduce on fixed rpm.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.