Can you all please run: xdpyinfo -ext XINERAMA|grep head just after starting X, before any xrandr commands? Preferably, run this in a Failsafe Terminal session (from the login window menu).
(Checking possible connection to http://gitweb.freedesktop.org/?p=xorg/xserver.git;a=commitdiff;h=23b8ca8a373d919225de9739af7b064f650eceec)
Can you all please run: xdpyinfo -ext XINERAMA|grep head
just after starting X, before any xrandr commands? Preferably, run this in a Failsafe Terminal session (from the login window menu).
(Checking possible connection to http:// gitweb. freedesktop. org/?p= xorg/xserver. git;a=commitdif f;h=23b8ca8a373 d919225de9739af 7b064f650eceec)