Upstream confirmed this bug and provided a work-around: add this line to "Device" section in xorg.conf
Option "ConnectorTable" "4,1,1,3,0,1,2,6"
Upstream confirmed this bug and provided a work-around: add this line to "Device" section in xorg.conf
Option "ConnectorTable" "4,1,1,3,0,1,2,6"