https://bugs.freedesktop.org/show_bug.cgi?id=64850
--- Comment #6 from Jakob Nixdorf flocke@shadowice.org --- I will upload my xorg log as soon as possible. But I think its a DRM or KMS issue, since it already happens before I start X (no TTY on the second screen at boot after KMS starts).
And no, its not the HDMI screen, its the one connected via DVI.